REVISION - INVERTER SYSTEM

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP89B00980R000200180012-1
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 4
• Document Creation Date: December 14, 2016
• Document Release Date: October 16, 2002
• Sequence Number: 12
• Publication Date: May 13, 1963
• Content Type: FORM

Approved For Release 2002/10/31 : CIA-RDP89B00980R00620A 12-1
ENGINEERING STUDY a
LOH
CEED. AIF CRAFT CORFORAMON
-156
CHANGE PROPOSAL
DATE 13 MAY 1963
AFFECTS' WSPO [
PROJECT
NAME OF MAJOR COMPONENT
PART OR LOWEST SUBASSEMBLY
PART NO. & MODEL OR TYPE
TITLE OF PROPOSAL
REVISION - INVERM SYSTEM
NATURE OF PROPOSAL:
SEE PAGE2
REASON FOR PROPOSAL
PAM2
,
j-
ESTIMATED COST AND TIME INVOLVrQ":
ES
!//
ADDITIONAL FUNDING REQUIRED :
ESTIMATED COST FOR KITS OR PARTS : SEE PAGE 1.
C P
ADDITIONAL FUNDING REQUIRED YFS (SP-1422) 1oi
(SP-1923)
ITEMS AFFECTED BY PROPOSAL
SAFETY
MISSION
PERFORM-
OPERATING
INTER-
WEIGHT OR
TOOLS &
MAINTE-
SERVICE
FLIGHT
MAIN'fE.
EFFEC.
TIVENESS
ANCE
PROCEDURE
CHANGE-
ABILITY
WEIGHT &
BALANCE
SUPPORT
EQUIPMENT
NANCE
PROCEDURE
LIFE
MANUAL
NANCE
MANUAL
Fx]
[i]
El
G1
2
G1
1A
EST. MAN/HRS. REQ'D. TO ACCOMPLISH CHANGE IN FIELD 80 Hours
SOURCE OF PARTS FOR KIT .
AVAILABILITY -
WEEKS AFTER APPROVAL
PURE & FAB.
SEE PAGE 4
'SPOSITION OF SPARES AFFECTED -
419-2 nmmm - RETURN To STOCK FOR USE
'ED BY : Approved For Release 2002/10/31: Clkg&%W0098W0200180012-1
PRO
..F.IA
 Approved For Release 2002/10/31 CIA-RDP89B00 0 0 200180012-1
Page 2 of 4
RUSON FOR PROPOSAL
To provide more reliable, larger capacity Inverter and to provide
inverter back-up in the event of as inverter failure.
Loads on the 500 VA inverter are near maxizmim under certain flight
configurations end future modifications requiring additional inverter
power cannot be accomodated. This proposal alloys for growth in
addition to eliminating'the carbon stack regulators which have been.
the source of moat ; of the past inverter :fal.3ures.
XAT= OF PROPOSAL
circuits for 'voltage. and frequency. regulation.
Replace the- aid stir 500 VA inverter with a 4T50 VA. unit - Leland PIN
2..100 per' M817 le 'T'his inverter provides Static electronic
in event of failure of the 750 VA inverter. Replace the existing
inverter toggle switch in the cockpit with a rotary selector switch.
with positions labeled as follows:
and to pro4ide use of the ousting 25.0. VA cent iuous ignition .avert %r
and the 100 VA mwgency invrter as back-up to supply aircraft 3.oa&s
Revise the existing inverter eir uita to accept the 750 VA inverter -
1. OFF - All inverters off. (Notes The 250 VA inverter will be an
if activated by a separate switch for use by the continuous
ignition system.)
2. NORMAL
a. The 750 VA inverter is turned on and all selected inverter
loads are conn,e'cted to its output. Total load, including
the Rendezvouts. Beacon is 544 VA*
b. The Inverter Out yarning light is connected to the 750 VA
inverter.
c. Allows use of the 250 VA inverter for continuous ignition by
placing the ?'uel Boost Pump switch in the On position.
Alternate With 618T-3 -.To be selected by the pilot in the event
of failure of the 750 VA inverter.
a. Connects the 100 VA emergency inverter to power the eariatirig
emergency flight systems, e. g. Remote CceWase, I1 5O, ADF,
VOR-RMI,.Altitud.e Gyro, and HOT. Total load Is 90.2 VA.
Approved For Release 2002/10/31 : CIA-RDP89B0098OR000200180012-1
 Approved For Release 2002/10/31 : CIA-RDP89B00980R00020 A Q G-1
Page.3 of 4
Nature Of Proposal (Cont'd.)
b. Switches Continuous ignition to the AC generator and
reconnects the 250 VA inverter to provide 3-phase power
to all remaining aircraft systems except the rendezvous
beacon. Total load is 249 VA.
c. Inverter Out warning is connected to the 250 VA inverter.
Alternate With Beacon - Required on ARS aircraft only. To be
selected by pilot 'hen beacon is needed after failure of the
750 VA Inverter. Reconnects inverters same as alternate with
HP Radio except as follows
s. Disconnects 618T-3 from 250 VA inverter and. renders
inoperative.
b. Disconnects autopilot from 250 VA Inverter..
gent - To be selectL& in the event of a DC generator failure
orb afaailure of both the 750 VA and 250. VA interters.
c. Disconnects gamma pulse rate inter from 250 VA invert
d. Connects rendezvous beacon to 250 VA inverter.
Total load on the 250 VA inverter is 255 VA.
a. Turns off the 750 VA inverter.
b. Turns off the 250 VA inverter.
c. Turns on the 100 VA inverter to supply emergency flight
instruments onlyt
d. Connects the inverter out yarning light to the 100 VA
inverter.
Relays for accomplishing the load monitoring and inverter switching
will be provided in the Q-bay. An isolation transformer vill be added
to the B phase to permit additional B phase loading and more evenly
balance the loading of the three phases.
The new 750 VA inverter provides approximately 200 VA in excess of present
loads. This will be available for future modifications, but the 250 VA
inverter, when used for back-up in the event of main inverter failure,
is fully loaded, and all future modifications must provide for selection
of monitored e9pipment to avoid overloading the 250 VA Inverter.
Approved For Release 2002/10/31 : CIA-RDP89B0098OR000200180012-1
25X1
 STAT Approved For Release 2002/10/31 : CIA-RDP89B0098OR000200180012-1
Approved For Release 2002/10/31 : CIA-RDP89B0098OR000200180012-1