REPORT OF CURRENT ACTIVITIES

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Collection: 
Document Number (FOIA) /ESDN (CREST): 
CIA-RDP89B00487R000300510001-6
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RIPPUB
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K
Document Page Count: 
52
Document Creation Date: 
December 22, 2016
Document Release Date: 
August 9, 2011
Sequence Number: 
1
Case Number: 
Publication Date: 
January 3, 1958
Content Type: 
MEMO
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PDF icon CIA-RDP89B00487R000300510001-6.pdf6.29 MB
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Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 1. Three Configurations (B #13, A-2 #12, A-2 #13) are ready for ABSTRACT shipment to Del Rio. 2. A second Shutter HS-732 ran 170, 000 cycles without malfunction in a durability test. in Configuration C. 3. Simple additions to the radio noise filters provided adequate suppression ,missions with satisfactory electrical and mechanical oper.atioon. 4. Reliability of Configuration B has.been established in 15 successive 35 1/mm in the later flights. Further work may improve this in January. 5. The quality of Configuration B photo results has consistently been LIST OF ENCLOSURES Manning,Chart, Field Service Department Preliminary Engineering Report on Resolving Power of some aerial film Location of Configurations 1. Configuration B Rework 2. Durability Test HS-732 3. Progress Report on the 73-B Vibration Problem 4. . Radio Interference Tests on HR-73C Configuration .'Optical System .55. Interim Report, Cold Temperature Tests, Configuration 73-C SAPC ,2g2ey COPY 7 OF 3 January 1958 25X1 LJ/\ I Report of Current Activities 6. Flight Test. Schedule Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 'fi ' e f pr e a the ? ewc> Tb11k f ogres :aimed to_ i i {See Enc#ssure ' 3 ;! shutter d rab ty Mast : uctect tsing _S utter ` ^` 107 ad a tf,~f ~.'+ ac hl xh # c ev y 00 a ~I .a`"wad;, ~ o r, e t c yevery y10,,;0.0 +y} ~e ~. ; Th ut_ter nV{I ~ ~ 4 ee {yt 7 .{..` {, f e i CN k at 1f E S 'f t3 f *~ d r`. Shzfte s'paed' TAM fined '0't g - bx ~Ee y 11 ~ e o )ter?ughout test., t t end o the test t wr i e r worn ee t epla l~-g, Tie r#ilg gear was v o t' arnd bea ..1 g groove v erm t ess backlash. Slight shutter b# de aunae was riot eep?b y iwt ea ` I des, w `m, bear ngs~ ` t :, nvere in s tis tort' cronditio d u tz e . !y r Vibration S ies o .S. C grtr~dths vibrb~l 90 CS-r~{ides t$ a m red 'il t ~ t4$ taaard 3 es . 119 N lit 4 ;'moo p;, ` ration^2Y ounce "111 ! article tai; ,oaf; gu ra.tin? abr~as' o~re~r,saa;': ~I'to thai,6ce rxieraux I trumentattgn Ii tests air a c9i ~ `forchug fre ' 3' 555"' .1:Al !t ~7 f g#lt, ~t+ d radio ,'`cz sot lb# r ' r'r b r forlna i '' a o Z 3L ~ ~ 0 'U 1-0 eCtfxea Y,pr~f e,e~lt~ Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 HYCON MODEL 73-C CAMERA SYSTEM RADIO INTERFERENCE SUPPRESSION WORK PLAN 25 October 1957 Subject, The subject with which this work plan is concerned is the radio noise interference which is created by the 73-C Configuration. 1..2 Purpose. It is intended that this work plan be a systematic and logical approach to the problem of radio interference in the 73-C. It is not meant to be a rigid plan, but one which presents a framework for the sycternatic solution of each problem. 1. 3 Scope. Basically, the intention is to detail a procedure of testing, correction, performance testing, and evaluation, An appendix is at.- tacked which outlines briefly the general problem of radio interference. 2. 1 Radio interference. Specifically, the 73-C Configuration generates noise which interferes with the aircrafts radio and ADF equipment.. 2,2 Mode of Propogation. Two modes eNist: conduction and radiation. It is, expected that both modes will be encountered. 2. 3 Frequency Range. The frequency range of interference with which we are concerned extends from 150 KC to 400 MC. Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 2.4 Permissible .Levels. The level to which the radio interference. is to be reduced shall be defined. as the level which permits the aircraft's radio equipment to perform satisfactorily. This shall be determined by Hycon engineers. in cooperation with the aircraft personnel, concerned. 3.0 PROCEDURES. 3. 1 Testing. 3. 1. 1 All units of the 73-C Configuration which are suspected of being interference sources are to.be tested. by either the radio noise facilities of Cornel-Dubilier (or similar facilities) or by our own RF (G. F. E.) receiver. 3. 1.2 It shall be the function of the above test to determine the. sources of radio interference, the interference level. associated with each source, and to find filter devices and/or develop techniques which will reduce the level of interference. 3.2 Correction. 3. 2. 1 The results of the testing described in 3. 1 will indicate the correct means of reducing the interference. 3.2..2 Units which, are prime offenders will be modified first and tested as outlined in 3. 3. Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 3. 2. 3 It is anticipated that in the majority cases, the radio inter- ference will be reduced adequately by the use of: 1) Filters. 2) Arc suppression devices. 3) Shielding. 4) Improved Bonding. 3.2.4 All corrective work shall be accomplished at Hycon Plant 99 under the supervision of the engineers responsible for the particular units. 3. 3 Performance Testing 3. 3. 1 3. 3.2 3. 3. 3 Each modified unit will be taken to the Test Site and installed in the 73-C Configuration. The Configuration will be installed in the aircraft and operated in conjunction with the radio equipment. A qualitative comparison of the interference levels and an evaluation of the improvement of the levels by the modification of each unit will be made at this time. 3. 3.4 Further testing and improvement will depend upon the performance of the modified units as determined by a flight test. Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Progress Report No. 1 RADIO INTERFERENCE SUPPRESSION WORK PLAN 24 October 1957 1. TESTS PERFORMED. 1. 1 Units Tested As of this date, the following units have been tested by the radio noise facilities at Cornel-Dubilier Electric Corp. , Venice, California. 1. Gyro Sensor Assembly Part No. 7338915 2. Film Take-Up Motor Part No. 734360 3. Aperture Motor Part No. 733273 4. Tension Regulator Motor Part No. 734181 5. Film Drive Motor Part No. 733646 6. Oblique Drive Motor Part No. 733676 7. Main Junction Box Part No, 734120 8. Film Drive Servo Part No. 733640 9. Oblique Drive Servo Part No. 733670 10. Stabilizer Servo Part No. 7.33870 11. Programmer Part No. 733600 12,. Stabilizer Power Supply Part No. 733885 Items 7, 8, 9, and 10 above comprise the Electrical Rock. 1.2 Conditions of Testing The radio interference testing facilities at Cornell-Dubilier Electric Corp. , are designed and equipped to conform with the environmental requirements of Mil-1-6181B. In brief, this means the tests were performed in a screened room with no detectable interference "present; the equipment being tested was mounted on a ground plane of specified minimum dimensions and properly bonded to* the screen room; the equipment was bonded properly to the ground plane; line stabilization networks were utilized on the power lines; and AN-type radio interference measuring sets were used for quanitative results. 2.0 TEST RESULTS. 2. 1 The units which were determined to be prime sources of radio inter- ference were: 1. Film Take-Up Motor 2. Aperture Motor Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 2. 1 (cont'd) 3. Tension Regulator Motor 4. Film Drive Motor 5. Oblique Drive Motor 6. Programmer 7. Gyro Sensor Assembly The order of the above list is not intended to indicate the magnitude of the radio interference emitted by each unit. 2.2 Recommendations. With the exception of the Gyro Sensor Assembly, which did not receive further testing, filter devices were tested and techniques recommended by Cornell-Dubilier for all other units listed above. 2. 3 Levels After Filtering. Although Mil-I-6181B specifications are intended to be used only as a guide, tests performed by Cornell -Dubilier indicate that all the motors can easily be modified to be well below the specified maximun levels of Mil -I-6181B. Tests on the Programmer (after filter- ing) indicate a substantially reduced level which should be adequate. 3, 1.. Motors The motors tested (i. e. , the Film Drive, Film Take- Up, Aperture, Tension regulator).. Have been modified as follows: a. A filter, of the type -recommended by Cornell-Dubilier, has been installed. h. The units have been reworked to obtain better shielding. This has mainly been accomplished by use of shielded wire. c. Great care has been taken to insure good bonding between surfaces to improve the electrical ground. Insulating layers, such as anodize,. have been removed at the points of contact and the surface cleaned. The direct purpose of the above modifications is to contain the radio interference within each unit and thereby prevent conduction and /or radiation to occur. 3. 2 ., Programmer. A shielded box has been constructed upon which has been mounted twenty five filters. This filter assembly has been taken to the Test Site, mounted adjacent to the Programmer, and the filters inserted into the appropriate leads. The filters used were recommended by Cornell-Dubilier. 3. 3 Gyro Sensor Assembly. The prime sources of radio interference in unit are the heater circuits of the gyros. A. double RC network of,our own design has been installed across the relay contacts in each circuit of the unit in the 73-C Configuration at the Test Site. Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 4. 1 Testing . The above modified parts were removed to the Test Site and installed in the 73-C Configuration there. Test procedures were carried out as outlined in the Work Plan, Section 3, 3. 4. 2 Test Result. After the. configuration was installed the article was towed to a remote section of the flight line.,. The unit was operated in different Modes for half an hour while Mr. Joe Falcon, aircraft radioman listened on various receiver channels for radio noise. His opinion was that the noise had been reduced to an aniount that was barely noticiable and would present no receiving problem. 4. 3 Flight Test The 31 October 1957, Test Flight, of the 73-C will he used for a 'pilot's evaluation. Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 2. 4 Flight Test Schedule (See Enclosure (6 . ) The proposed flight test schedule for January through April 1958 requires a high frequency of test flights in latter part of January and in February. The number of articles available and weather may be limiting factors. Two flights will be made with each B Configuration. After results have been analyzed and determined to be satisfactory, the configuration will be returned to M & O :for preparation for deployment. 3. PERSONNEL (See Enclosure (4).) The rotation of field personnel is proceeding in accordance with the schedule enclosed. This schedule differs from the one reviously submitted in that it indicates a change in the rotation -of In addition we are 25X1 proceeding to assign) ~ to maintain hand controls and drift sight at 25XI the0 Instruction of ersonnel rotating is proceeding. We have sent all our 25X1 processing personnel to facility for a week's training. We also sent 25X1 two of our field men to Rod Scott's for refresher instruction in the maintenance of the Mark II tracker prior to our running the Red Dot Tracker series. reported to C Detachment on Tdy for the purpose of re-collimating all 25X1 of C's A-2 configurations. The two FOG instructor-type trainees reported on 9 December and their in- struction is proceeding. reported to Del Rio on 9 December as our second tech rep in accordance with the terms of our FOG field service contract. 4. STAGING A number of commentary reports on staging operations have been prepared by our field. service engineers from all detachments. is analyzing 25X1 this information and preparing a final consolidated report and recommendations. Other than providing adequate shelter, and better portable 70 mm processing .equipment at the staging area, there are only minor changes in or additions to ground equipment required. Recommendations are mainly concerned with pro- cedures and pre-staging requirements. 5. OTHER COMMENTS 5. 1 Film Resolving Power (See Enclosure (8). ) A film resolving power test was made by our optical lab. It indicates the resolving power of thin base film, 0-3, is considerably better than that of Aero xx. The Red Dot film, 0-8, had a resolving power beyond the limit of our reticle, 114 lines /mm, Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 5. 2 Configuration A-1 Overhaul A preliminary check indicates the cartographic characteristics of the HC-730 cameras have been unaffected in their tour of duty. Further checks are being made. A review of HC-730 spares was made and a recommended re- distribution submitted. 5. 3 Shutter HS-731 Leaf Assemblies 200 spare leaf assemblies are being obtained out of shutters at Mobile by Bob Welch. None have been received but 25 are expected this week. Ed Green obtained a quotation of $112. 92 each with five months delivery from Fairchild for 100 spare leaf assemblies. They can be ordered if the spares from Mobile are not satisfactory. Detail drawings of leaf assembly parts were sent to us by Sid Brewer in order to permit us to salvage some leaf assemblies by manufacturing replacement links. Installation of the Rolit at EAFB is ready to proceed pending approval by Headquarters. 5. 5 Wires Survey Completion of the C spares deliveries in January and February will provide satisfactory lead time for the coming photo season. Hycon is planning to take a physical inventory of the photo areas at all locations on 31 January 1958. This -'will reveal any discrepancies between the records and the physical assets in time to take action prior to the start of the photo season. 5. 6 B Film Boxes Ten new steel B film boxes were shipped to us by Ed Green on 24 December. We have manufactured ten sets of B spool shipping spiders to a new, more rugged design. When the steel boxes arrive, we will make some trial packaging arrange- ments. 5. 7 Location of Configurations (See Enclosure (.9 ). ) The latest information on the physical location of configurations is tabulated in Enclosure 9 . Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Enclosure (1) 2 December 1957 Page 1 of 5 CONFIGURATION B, REWORK 1. Added stiffness to camera members to control film tracking. Design in final approved stage. Production began week of 1 December. 1. 1 New Stiffener bar to cross panel to maintain roller parallelism under overload conditions. 1. 2 New cassette shafts to limit load deflections to 0. 005. 1. 3 New clamp type cassette shaft supports to provide positive clamping of shafts during camera operation. The design also offers adjustable lateral positioning and securing of the spools to aid in film tracking. . 1. 4 New 6-inch spool cores to add stiffness to flanges. 1. 5 New sheet metal stiffener beams added to structure side panels. Beams are secured f camera main torsion bar and extend to two corner points of structure that support the film spool shafts. Design in layout stage; pro- duction to begin week of 80becember. 2. Added strength to driving members. Design in final approval stage; production began week of 1 December. 2. 1. 1 Adaption of more ball bearings throughout to replace bronze type to allow smoother operation with decreased demands on motor. 2. 1. 2 New stronger drive shafts. 2. 1. 3 New pressure and idler rollers. 2. 1. 4 New supporting brackets for cantilevered bearing shafts. 2. 1. 5Internal changes to gear box to use brazed gear and shaft assemblies to replace pins and screws. 2. 2 Oblique Drive 2. 2. 1 Improved security of pulley on gear box output shaft. 2. 2. 2 Internal changes to gear box to use braized gear and shaft assemblies to replace pins and screws. Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Enclosure (1) 2 December 1957 Page 2 of 5 2. 3 Take-up Drives 2. 3. 1 All Motordyne type motors have been replaced with Western Gear type motors. Experience indicates the Western type is more reliable, quieter operating, and better matched to the load demands, especially the 6, 000 ft. load. 3. General Design Improvement 3. 1 Adjustable oblique brake device now in production as an aid in postflight maintenance to insure positive positioning of-lens assembly. 3. 2 Cassette centering device improvement in design phase for correct position- ing of cassette for film spool alignment. 3. 3 Investigation is in progress to provide stronger film tension limit stops and a system of less critical adjustment. Production expected to start week of 8 December. Environmental tests have been conducted on the shutter operating in a vacuum under both-hot and cold conditions. No adverse affects upon material or operation were noted. Examination of all parts returned to the factory show corrosive action in some .external parts on unit from C Detachment only, but no evidence of corrosion was found as a deterrent to camera operational reliability. C Detachment unit shop ran four complete missions during tests before disassembly for major maintenance and current rework. Complete system environmental test in cold chamber will.be conducted upon completion of rework program. A series of tests have been made to study the feasibility of eliminating the tension sensor and servo system as an aid to reliability. The tests indicated that under normal conditions the film would transport properly without the aid of the sensor system. However, when the take -up -spool diameter reached a point approxi- mately halfway through a film roll, any increase in drag due to a worn bearing; voltage drop, or spool flange pressure, the motor could stall and stop taking up the metered film. It was decided that the factor of safety and reliability by having the demand power response capability of the sensor system on the camera was worthwhile and steps then taken to improve the design where possible. (See 3. 3) Life cycle tests Ore complete on the film drive, improved oblique drive motor, take-up motors and the tension sensor systems. Approximately 80, 000 feet of Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Enclosure (1) 2 December 1957 Page 3 of 5 film or over 13 (6, 000 ft.) mis sions have been successful with no malfunctions or replacements of these components. Sixty percent of the missions were actual test flights. Evaluation tests are complete on the take-up motor demand versus capability to reaffirm initial motor specifications. Results show Western Gear type motor adequate for application with good. safety margin capability. Analysis of test flight results show that vacuum failures will not occur due to the camera vacuum system providing the vacuum valve is periodically inspected and adjusted per the post maintenance procedures. A spring-loaded plunger de- sign is being tested to minimize possibilities of improper adjustment which is critical at present. Aircraft instrumentation to record bay differential vacuum pressures will be performed on a near future test flight at EAFB. Report to follow. MAXIMIZE PHOTO QUALITY 1. Vibration (See Encl. 3) 1.1 Shutter Design for shock mounting the shutter is complete and in production. The design calls for the addition of six soft spherical rubber buttons, set deep into the shutter castings that isolate the shutter assembly from the lens housing. Shutter castings must be machined to provide additional clearance for free movement within the lens housing. Light sealing is accomplished by addition of nylon velvet ribbon, set into shutter at mating surfaces around "drawer" opening. 1 Motors Design for shock mounting the film drive, take-up and oblique motors is complete and in production. All motors will be mounted on rubber grommets. Vibration and noise level has been greatly reduced. 1. 3 - Mirror and Platen Design changes pending accelerometer studies. 1.4 In-flight aircraft three-axis motion rate recordings. (See Encl. 3) 2. Design improvement affecting photo quality. Production to begin week of 1 Dec. 2. 1 New improved IMC direct drive system utilizing one-piece cycle shaft, silent chain drive, and simplified clutch-gear housing to eliminate all backlash in driving train. Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Enclosure (1) 2 December 1957 Page 4 of 5 2. 2 New cassette light seal to camera body. Sponge rubber removed from light seal channel frame on cassette and lip frame on camera increased in height to provide a non-contact light-'tight baffle. 2. 3 New adjustable focus posts to provide ready means to perform corrective focus changes if necessary and as .an aid to factory collimation procedures. Posts will be locked and safety wired after factory collimation. 2. 4 Improved data image by tests using a masking aperture in the housing and altering the black and white painted surfaces to obtain constant diffused light over the entire data card. 2. 5 - New oblique cyclic drive to minimize operational shock vibrations on the optical structure will bq tested week of 1 December. Report to follow. 2. 6 Mirrors currently being inspected for -necessary recoating. std. INCORPORATE ADDITIONAL NECESSARY FEATURES 1. Remote Control Complete pilot capability to. select and operate the camera from the cockpit in all Patterns and modes of operation, both horizon to horizon full terrain coverage, and selected areas vertical, left and right concentrated targets. 1, 1 Programmer Model HP8191. In production starting week of 24 November. Final design to production week of 1 December. 1.2 New two-speed film drive motor. 1.3 New camera wire harnesses. 1.. 4 Engineering investigation is near completion on necessary changes to add two additional selective positions to band controls Marks I and II. Rework includes replacement of selector switch in Mirk I and. Mark II units with additional wires. Mark III unit to be reworked to add two additional wires. Minor electrical changes are necessary on the A/C Junction Box, A luminous decal nameplate will be pro- vided to indicate additional. switch positions. A luminous switch pointer knob will be provided as an added feature to the hand controls. A field service bulletin is being prepared delineating necessary changes 'to each type,of equipmep.t although it is recommended that rework be performed at the maxi iirer's factory. Engineer- ing has placed orders for all .parts as switches are a term procurement item, Service bulletin to be complete week of 8 December. All lights to be green. Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Enclosure (1) 2 December 1957 Page 5 of 5 2. Improved B material shipping assembly. Production in process for ten experimental ruggedized shipping flange assemblies. Evaluation continuing for simpler design. 3. Radio noise suppression (See Encl. (4-),) Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001 -6_re -A Stroh: PASADENA HYCON MFG, COMPANY . :DURABILITY. TEST HS-732 Serial #39 PAGE. Jo.. of. 12 REPORT: PURPOSE To conduct a durability test of Shutter HS-732, Serial #39 TEST :CONDITIONS Shutter was operated on the begch in. Maintenance & Overhaul shop by Field Engineer, Gordon von Stroh, .In the initial part of the test, the shutter was operated at runaway, Which ;s obtained by applying a continuous trip voltage to the shutter; the interval i between shutter firings is 1. 1 to 1. 4 secs, depending upon the sp,6.edi of the rewind motor. When the rewind motor has recocked, the drive springs and latches Ore in place, arrt the shutter is immediately fired.. This; is a more severe test than operating the shutter by intervalometer, of in. the camera with the normal 4-1/2 sec interval between shutter firings. The. shutter was operated at runaway at the start in order to shorten the total elapsed time of the test. During the latter part of the test it was operated by, Inter valometer at 28 cycles per minute. A 1.0:, 000 cycle interval between inspections was selected as a moire rigid test. of the shutter. Field instructions require 5, 000 cycle inspection, lubrication and adjustment. The shutter was run continuously ford at least 4, 000 cycles before stopping for any reason other than inspections or end of work period in order to simulate the required minimum duty. period as closely as possible. A check of. the shutter speed, with test set (light source, oscilloscope, photocell) was made periodically during the test. The measured speed must be multiplied by 1. 2 to obtain. actual effective shutter speed. Speeds .quoted in this report are the actual effective shutter speeds. Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 r'Str ASADENA .HYCON MFG. COMPANY `.-DURABILITY- TEST HS-732 Serial # 39 PACE T of 12 PURPOS TQ conduct a durability test of Shutter HS-732, Serial #39.. TE S'1'' 'CONDITIONS: Shutter was operated on the bench in Maintenance & Overhaul shop by Field Engineer, Gordon von Stroh. In the initial part of the.test, the shutter was operated at runaway, which is obtained by applying a continuous. trip voltage to the shutter; the interval between shutter firings is 1. 1 to 1.4 secs, depending upon the speed of the rewind motor. When the rewind motor has recocked, the drive springs 'and latches ire in place., a^t the shutter is immediately fired. This is a% more severe test than operating the shutter by intervalometer, or in. the camera with the normal 4-1 / 2 sec interval between shutter firings. The.:.. shutter was operated at runaway at the. start in order to shorten the total elapsed time of the test. During the latter part of the test it was operated by.,intervalometer at 28 cycles, per minute. A 1.0, 000 cycle interval between inspections was selected as a more rigid test. of the shutter. Field instructions require 5, 000 cycle inspection, lubrication and adjustment. The shutter was run continuously for at least 4, 000 cycles before stopping for any reason other than inspections or end' of work period in order to simulate the required minimum duty. period as closely as possible, . 'A check of the shutter speed, with test set (light source, oscilloscope, photocell)' was made " periodically during the test. The measured speed must be multiplied by 1. 2 to obtain actual effective shutter speed. Speeds quoted in this report: are the actual effective shutter speeds. Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 I ,I I Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 are (2) vacs `utroh PREPARED $Y- ..1'214157 HYCON MFG. COMPANY DURABILITY TEST HS-732 Serial X39 I I; !Aaal;2.of 12 I .i.l' I li. REPORT Pli'or" to the durability t ot, the shutter was operated 2, 500 cycles during 'routine quality control checking,' inspection and adjustment. After 140, 000. cycles of testing, the, shutter was subjected to lows tempera- turn, high altitude. operating conditions for 20, 000 cycles. i! t At' the st t f * ? te ar o s : Runaway Rate: 52 cycles per minute Shutter Speed: 11220 sec Worm Gear in #2 position TEST DATA: "Nov. 1, 1957 Friday. At 1:05 pm the unit was connected to electrical test equipment containingi the necessary switches. and cables. The trip. switch of the tester was placedi in' the "on" position, This produces a runaway condition in the shutter. Power was, applied. Running time: 1:05 pm to 3:50 pm 8, 360 cycles - from 2:05 pm to 3:50 pm. Runaway rate was 50 cycles per minute.. No malfunctions Test off for weekend. Total Cycle' 360 Nov. 4, 1957 - Monday Test continued at $;15 am to 9:10 am Operated at runaway at,.50'?cycles ? per minute,' 1, 640, cycles, to complete 10, 000 cYele run. `'Stopped to perform 10,.000' cycle maintenance check. At . this time the unit was again ( I! timed, using the.photocell and oscilloscope camera., Time, 1/240 sec. ?j r PASADENA: i ,II Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 e (2) ,tE l 2' 4-1-5.7. PASADENA HYCON MFG. COMPANY DURABILITY TEST HS-732 Serial #39 CALIFORNIA PAGI 3 of 12 A readjustment of the worm gear was made and items on the standard maintenance and inspection list for 10, 000 cycles were checked. Worm gear remained in #2 position. Total Cycles: 10, 000: Nov. 4, 1957 - Monday The unit was placed back on test at ;;:30 am -Running time: 11:30 am to 2:35 pm Operated at runaway rate of 54 cycles per minute. 10, 000 cycles Total Cycles: 20, 000 Nov.. 4, 1957 - Monday The unit was subjected to a timing test, using the photocell and equipment noted previously. Time, 1 / 240 sec. The unit was then given a 10, 000 cycle periodic maintenance check. The unit was placed back on test. Running time: 3:05 pm to 5:05 pm Operated at runaway rate of 54 cycles per minute. 6, 380.cycles. Test stopped overnight. Total Cycles: 26, 380 Nov. 5, 1957 - Tuesday Test continued at 8:10 am Running time: 8:10 am to 9:10 am Operated at runaway rate of 54 cycles per minute. 3, 070 cycles to complete 10, 000 cycle run. Unit timed and sub- jected to a 10, 000 cycle maintenance check. Time, 1/238 sec. Total Cycles: 30, 000 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 .n closure 2 vci Stroh PWARI I _ HYCON. MFG. COMPANY PASADENA CALIFORNIA PAGE .4 of 12 DA?E 1 4 ., ? DURABILITY- TEST HS-732 Serial 039 Nov. 5, 19571 - Tuesday :.Test continued at 10c,Z5 am Running time: 10:25 am to 1:35 pm Operated at runaway rate of 54 cycles per minute. 1.0,000 cycles; speed and maintenance check. Time, 1/240 sec. Total Cycles: 40,000 Nov. 5, 1957 - Tuesday Test continued at 2:10 pm Running.time: 2:10 pm to 5:00 pm Operated at runaway rate of 54 cycles per minute. 9,400 cycles. Test stopped for the night. Total Cycles 49, 400 Nov. 6, 1957 - Wednesday Test continued at 8:05 am . Running time: 8:05 am to 8:20 am Operated at runaway rate of 54 cycles per minute. 600 cycles to 10, 000 check. Time, I/ 240 sec. The ring gear carrier bearings required slight adjustment to take up wear. Total Cycles: 50, 000 Nov. 6, 1957 - Wednesday At 50, 000 cycles, the rewind motor was due for overhaul. The test was deliberately continued without overhaul of the motor to determine the 'safety factor in specific overhaul period. - Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 VOW ? troxi PREPARED.iY_ CHECK BY nT 214/ 5.7 . PASADENA HYCON MFG. 'COMPANY DURABII,,ITY TEST HS- 732. Serial #31 .Test continued at 1:25 pm PAGE 5 of 12 (REPORT= Running time: 1:25 pm to. 4:35 pm Operated at runaway rate of 54 cycles per minute. 10,000 cycles; time and maintenance check. Time, i/235 sec. Nov. 7, 1957 - Thursday Test continued at 8:35 am Running time: 8:35.am to 10:00 am Operated at runaway rate of 54 cycles per minute. i.. Total Cycles, 4, 500 cycles. Stopped test at 10:00 am due to motor dropping in speed to, 36 cycles per. minute and overheating. Motor had. not been overhauled at 50, 000 cycles per maintenance check list in order to verify. this requirement. Motor M & 0 overhaul was done at this time and worm gear changed to Position #3. Total cycles on worm gear Position #2, 649-500. Total Cycles: Nov. 8, 1957 - Friday Test continued at 9:00 am Running time: 9:00 am to 11:00 am Operated at runaway rate of 46 cycles per minute and at completion of 10, 000 cycle period, had slowed to 43 cycles per minute. Removed; unit from test and subjected it to a photographic timing test, then a 10, 000 cycle maintenance check. Minor worm gear adjustments were made to improve motor speed. Exposure speed, 1 /240 sec:, 5.,500.cycles Total Cycles: (70,1000 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 19.57 Friday byc?H NRFV. COGAPANy: Operated at runaway rate of 46 cycles per minute. Speed, 1/235 sec; 101, 000 cycles Total Cycles: Nov. 8, 1957 - Friday Test continued at 4:10 pm .Running time: 4:10 pm to 4:30 pm Operated at runaway rate of 46 cycles per minute. '900: cycles, Test off for weekend. cALWWO Total Cycles: Operated at runaway. rate of 46 cycles per minute;.slowed to 45 cycles per. minute. 4,.200 cycles to 10, 000 cycle check. Changed worm gear; to position; Total Cycles': Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 von Stroh PREPARED BY C CHECKED BY DATE 12/4/57 PASADENA HYCON MFG. COMPANY DURABI~ITY TEST HS-732 Serial #39 .Nov. 12, 1957 - Tuesday Test continued at 1:15 pm Running time: 1:15 pm to 4:30 pm Operated at runaway rate of 46 cycles per minute. 10, 000 cycles. Test stopped for the night and 10, 000 cycle check. PAGE 7' of 12 ' Total Cycles: 100, 000 Nov. 13, 1957 - Wednesday Unit given 10, 000 cycle maintenance check and photographic timing test. Speed, 1/240 sec. Test continued at 8:30 am Running time: 8:30 am to 9:30 am Operated at runaway rate of 51 cycles per minute. K-2 relay contacts began sticking, causing m1$-latching at. runaway oper.ation.,:: This con- dition was anticipated, so unit was changed from runaway to intervalo- meter operation, set to pulse 28 cycles per minute, and shutter con- tinued to operate properly on intervalometer. Sticky relay was retained to determine margin of safety and ultimate life under normal conditons. 3, 060 cycles Total Cycles: 103, 060 Nov. 13, 1957 - Wednesday Test continued at 10:00 am, continuing shutter on intervalometer at 28 cycles per minute. Running time: 10:00 am to 1:30 pm 6, 940 cycles to 10, 000 cycle check and 50, 000 cycle M & 0 motor Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 re (2) HYCON MFG. COMPANY PAO' 8 of 12 DAT' 12/4/57 DURABILITY TEST HS-732 Serial #39 overhaul and worm gear adjustment. Speed, 1/235 sec. Total Cycles: 110, 000 Nov. 13, 1957 - Wednesday Test continued at 3:30 pm after motor overhaul. Running time: 3:30 pmfto 4:30 pm Shutter ran on intervalometer at 28 cycles per minute. Runaway rate, 50 cycles per minute. 1, 680 cycles. Stopped test for the night. Total Cycles: 111,680 Nov. 14, 1957 - Thursday Test continued at 7:50 am Running time: 7:50 am to 12:50 pm Shutter ran on intervalometer at 28 cycles per minute. Unit removed from test and subjected to a timing test and 10, 000 cycle inspection. Runaway cycling rate, 50 cycles per minute. Speed, 1/245 sec. 8,400 cycles Total Cycles: 120, 000 Nov. 14, 1957 - Thursday Test continued at 2:00 pm Running time: 2:00 pm to 5:00 pm Shutter ran on intervalometer at 28 cycles per minute. Runaway cycling rate, 50 cycles per minute. Test off for the night. 5, 060 cycles Total Cycles: 125, 060 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 , r e (2 ) von Stroh PREPARED RY CHECKED. BY, DATE 12/4157 DURABILITY TEST HS-732 Serial #39 PAGE 9 of 12 REPORT. Nov. 15, 1957 - Friday Test continued at 8:00 am Running time: 8:00 am to 10:55 am to 10, 000 cycle check. Shutter ran on intervalometer at 28 cycles per minute. Runaway rate, 50 cycles per minute. Speed, 1/240 sec. 4, 860 cycles Total Cycles: 130, 000 Nov.- 15, 1957 - Friday . Teat continued at 11:30 am Running time: 11:30 am to 4:30 pm Shutter ran on intervalometer at 28 cycles per minute. Runaway rate, 50 cycles per minute. Test off for weekend. 8, 500 cycles Total Cycles: 138, 500 Nov. 18, 1957 - Monday Adjusted limit switches before resuming testa Test continued at 8:45 am Running time: 8:45 am to 9:45 am Stopped test to make a 10, 000 cycle check and photographic timing test. Speed, .1/240 sec. Runaway cycling rate, 50 cycles per minute, 1, 500 cycles Total Cycles: 140, 000 Nov. 19, 1957 - Tuesday Conducted low temperature test in cold box. At 8:00 am, placed unit in a cold chamber at +35?F and allowed to stabilize for one hour. Circulating fan in dry ice chamber turned on HYCON MFG. COMPANY PASADENA CALIFORNIA Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 L.nciosure. (2) 'von Stroh PREPARED RY_ HYCON MFG. COMPANY PACE 10 of 12 DATE 12/4/57 DURABILITY TEST HS-732 Serial #39 at 9:00 am and temperature dropped momentarily to -65?F. Shutter would not operate at this temperature. Turned off fan and tempera- ture gradually returned to +35?F. Tested shutter during warm-up period and normal operation began at -20?F. Cold chamber stabi- lized at +35?F and operating test started at 9:15 am. Running time: 9:13 am to 3:15 pm continuous. Shutter operated on intervalometer at 28 cycles per minute, at +35?F. Runaway rate, 48 cycles per minute. Stopped test to make a 10, 000 cycle maintenance check and photographic timing test. Speed, 1/240 sec. Test off overnight. 10, 080 cycles Total Cycles: 150,080 Nov. 22, 1957 - Friday Conducted altitude test in combination with low temperature. Packed bell jar with dry ice and applied vacuum to simulate 40, 000 ft. altitude at +32?F. Test continued in low pressure and cold at 9:30 am. Running time: 9:30 am to 3:30 pm continuous. Shutter ran on intervalometer at 28 cycles per minute, simulated 40, 000 ft. altitude and +32?F, Runaway rate, 48 cycles per minute. Test off at 3:30 pm and unit subjected to photographic test. Speed, 1/240 sec, 9, 920 cycles Total Cycles: 160, 000 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09 CIA-RDP89B00487R000300510001-6 e(2) Y. Strad '. CHECKED ar ATOV. 25, 1.957 Monday CILIEORNIA Rewind motor given 50 000 cycle overha l and worm, gear adjusted . PAfi~~~l Oaf" 1 ~.: .Test continued at 3:30 pm- at ambient room .temperature and pressure.. Running time: .3:30 pm to. 4:30 piin Shutter operated onintervaiometer. at 28 cycles per, minute Runaway rate, 46' cycles per minute. 1, 680 cycles Nov. 26,. 1957 - Tuesday Test .continued at .8:00 am Running time: 8:00. am.:to 10:30 am PASADENA. HYCON DUR BILYTY "TEST RS-732 Serial; #39 Total- Cycles:, 161, 680 Shutter operated onintervalorneter at 28. cycles per minute Runaway rate, 45 cycles. per minute. Room..ambient... At 9:00- am, 165, 860 cycles, motor slowed down, approaching 30 cycles per minute. Stopped test at 10:30 am as unit,. required motor and gear adjustment. 4, 200 cycles Total Cycles: 165, 880, Nov 26, 1951, - Tuesday Test continued at.1100 am at cycling, rate of 45 cycles. per .minute Running time: .l l :?00 am to 1:30. prri, 4, 2?Q". cycles to 10, 000 cycle check. Shutter . operated on intervalometer at 28` cycles per, mminute.,. .Runaway rate at end of period, 3.5 cycles per minute. Unit removed from test and subjected to a 10, 000 cycle photographic timing test and maintenance check. Speed, J,'/210. sec. Test . shows shutter bounce of I M/S duration and approximately" 10% amplitude 'Wear. Test: off for the night. Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 re (2) HYCON MFG. COMPANY DURABILITY TEST HS-732 Serial #39 REPORT gear teeth and bearing grooves permits excess backlash. (1 /4") ade: overlap.. No. ecdentric adjustments left :tjo compensate for wear., Worm gear worn beyond satisfactory service, no re-adjustment Total Cycles: 170, 000 Test ' discontinued and shutter assigned to Engineering for detailed wear 'Shutter #39' operated 170, 000 cycles without malfunction. at least 100% safety factor. The field instructions. to inspect and adjust every 5, 000 cycles has The field instructions to replace the rewind motor at 50, 000 cycles a; 30% safety factor. The field instructions to rotate worm gear to new operating position every 20, 000 cycles has safety factor of 20% 101011111111M ?r+rri in v Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 CALIFORNIA ''WE 12 of 12 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Enclosure (3) TO: W. A. Stewart Date: 3 December 1957 FROM: Don Moors SUBJECT: Progress Report on the 73-B Vibration Problem A vibration study of Configuration 73-B has been undertaken to determine to wha extent vibration was causing image degradation, to find the source of ima e degrading vibrations, and to investigate methods of isolation. Vibration measuring equipment has been purchased and used. This equipment consists of an piezo-electric type accelerometer and an amplifier with a double integrating network incorporated in it. The output of this equipment is displayed on an oscilloscope. A multi-channel pickup and amplifier system is now being made up. This system will have the capability of in-flight recording using a Century Recorder. Preliminary tests showed a sever-,4 transient on the lens housing due to the shutter. Subsequently a shutter was shock mounted by relieving the shutter housing approximately 1/32 inchM and supporting the shutter on rubber .pads, It was found that with proper installation of this mount, the displace- ment of the lens housing could be reduced to . 0005 of an inch during the exposure. A subsequent flight (PTF 216) with the oblique drive locked in vertical, position showed a definite improvement. To date, the same quality has not been obtained with the oblique drive operating, however, ground tests with the configuration in the airframe have shown that all transient vibrations excited by oblique positioning are damped out before the subsequent exposure in all modes of operation. Measurements made on the mirror with all components operating including the shocjc mount shutter show movements ranging from .0003 to . 0001 inches during the exposure. Measurements with the shutter disconnected indicate no more than.00015 inch of movement. No significant change was observed with the oblique drive disconnected. Displacement of the mirror.. appears to be slightly less at the top than at midpoint, though no conclusions can be made as to the amount of rotation until measurements can be made .with the multichannel recording system. Readings taken on the structure adjacent to the take-up motors indicate that rubber mounting of motors effectively isolates a 600 cps ripple that seems to be responsible for much of the audio noise though there is no Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 indication that this component is present on the optical assembly. The accompanying table briefly summarizes the data to date. 1. The present method of shutter shock mounting is a definite improvement, however, it is probable that more improve- ment could be realized with a mounting system with greater side to side compliance. 2. Rubber mounting the take-up.motor will probably not make a significant improvement in image quality at this time. Rubber mounting will reduce audio noise. 3. The shutter is the major displacer of the mirror. 4. Transient vibrations. excited by oblique positioning are damped out in sufficient time. Recommendations 1. More work on the shutter mounting: a. Modify one lens housing to accommodate a more compliant mounting system. b. Ground test and flight test the modified shutter mounting. c. Make tests to determine how the shutter transient is trans- mitted to .the mirror and evaluate methods of isolation. 2. Make in-flight recordings to determine the frequency and amplitude of A/C vibration. 3. Determine the resonate frequencies and modes of vibration of all optical components. 4. Continue to investigate other causes of image degradation such as A/C, motion. DM/pe Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 HYCON MFG. COMPANY PAO FtEPARM 11Y PASADENA CALIFORNIA. s - JO CHECKED RY py ,4 - ',r J/A8 770/ / A 7 DATE Z~~ CiEFVlSElJ /z - Z. -S ;~~ REPORT 2/CXi J/2 LC.4Tsf1N .Z~/ pL A 4i /V 7 J? ' i R 414A? S m ? ,. E,/t/.5 . ~`G~!/a5'/ ~/~'j VEf< T/CA / ~n .Si 2,m'y-?t /. W MOD/~/ .0 -'-mot/ 00 2 . O'2 3 , 003 2, .e e. ! /lv7El 7E' . .O00 .0007 ,0003 ,3, 4L L GC/N PDiV N ~~ /1/,1/2 0 LEFT 7V P Fc~/ANT 2 /~vBt3E~2 i d y r .o - ,wirr 4 GWLY ? , 2 O3 '000/6- oaa3 ACG6L,~T,tc'~ M~'7~'Q LL CDMA:7At 'NT A _ LGCA7i tiS o?C EPT SN'07,r.E1Q oc?cI Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Enclosure (4) Interference Tests on HR-73C Configuration Introduction. Modifications to eliminate radio interference from the 73C Camera have been installed in Unit #2 at the Test Site. `rwo.flights have been made since the installation. Prior to each 'flight the pilot was briefed to. test all previously. affected equipment. The results. indicate that radio interference was not detectable. Purpose, of Tests. Previous operation of the 73 C Camera in flight ntiterferre*d with the aircraft radio equipment. Interference Sourrces. All suspected sources of radio interference ere tested by the radio noise facilities at Cornell-Dubilier Electric Corp., Venice- California. The frequency range was 150 KG to X000! rneg:acycle, s. The following units were found to be prime sources; Aperture Motor Film Drive Motor Fi'in Take-Up Motor Obkfque Drive Motor Tension Regulator Motors ?6,; Gyro Sensor.Assernbly Switches -,: Programmer Mpdifications Required. The following modifications were made on .above equipment. Motors. Filters, shielded housings and shielded- wire were installed. Bonding was improved. Programmeeer., Feed-through capacitors were installed installed in noisy lines. A shielded compartment for the. filters and shielded wire was used. theater relay contacts. Gyro Sensor Assembly. R-C filters were installed across y R=C_;filters were installed. Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Radio Interference Tests: on HR-73.C Configuration 7?e,0 Resulte. The following tuts have been performed: megacycles. The radio interference present was negligible. * Cos 11~I)ubilier over the frequency range of 150 KC to 1.000 Laboratory Tests.After modification the motors were tested b,. Ground' Systems Tests. After the modified units were installed in Unit #2 at:the=Te Site, .the Configuration was :installed in the article. The article 'was towed to a .remote section. of the flight line. The Configuration was operated, for :one -half hour while Mr. Joe Falcon, aircraft radioman, operated the radio equipment. All radio channels . and :frequencies were checked. M.r. Falcon reported the 'interference. was negligible. ,c. Flight~Tests. PTF 215 and?PTF 218 were used as tests. The. pilot vas briefed to. test all radio equipment over all frequency ranges. Glenn Pulkerson and the pilot have notified us that .radio interference during.flight operation of the Configuration ways :dundete stable-. Enclosure (4) Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Sanitized Copy Approved for Release 2011/08/09: CIA-RDP89B00487R000300510001-6 Enclosure (5) T 0, Ihtetim' Report '.:old. i lk i1 i` ~ > 9 0 le ~a 2 Cs' ? x Fwi a d *i;Y e '' - ,. .$ ~' :_ c t # i.:,, f; k' l v i ::t?.i 5., . .!" w} it was LC3 s1iN