LETTER TO DIRECTOR CENTRAL INTELLIGENCE AGENCY FROM CHARLES W. HARPER

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP71R00510A000200030006-5
• Release Decision: RIFPUB
• Original Classification: K
• Document Page Count: 6
• Document Creation Date: December 16, 2016
• Document Release Date: November 19, 2004
• Sequence Number: 6
• Publication Date: August 23, 1968
• Content Type: LETTER

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NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
WASHINGTON, D.C. 20546
ctiv? Registil
J DD/ST#
Director
Central Intelligence Agency
Washington, D.C. 20205
The National Aeronautics and Space Administration has
scheduled a Conference on Progress of NASA Research Re-
lating to Noise Alleviation of Large Subsonic Jet Aircraft
to be held at the Langley Research Center, Langley Station,
Hampton, Virginia, on October 8, 9, and 10, 1968. The
Conference is being organized to provide Government agencies
and industry with the most recent NASA research results
relating to the subsonic jet aircraft noise program.; The
subject matter, which will be unclassified, and scope of
the Conference are indicated in more detail on the enclosed
tentative program.
You are cordially invited to nominate two members of your
organization to participate in the Conference. Because of
limitations In seating capacity of the Conference facil-
ities, it is necessary to limit the total attendance on
each day to the number that can be properly accommodated.
If you wish to have different representatives attend on each
of the three days, you may nominate additional persons pro-
vided that only two will attend on a given day. Space is
provided on the enclosed attendance forms for indicating the
dates of attendance of your representatives.
For the accommodation of the conferees, blocks of rooms have
been reserved at the Chamberlin Hotel, Old Point Comfort,
Virginia. Reservation cards are enclosed for your
convenience.
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Bus transportation will be provided between the Chamberlin
Hotel and the Conference location ("Activities Building"
No. 1222 located in the west area of Langley Field) each
day of the Conference. On the first day the busses will
start leavi the hotel at 8:00 a.m. (last bus will leave
at 8:15 a.m in time for 8:30 a.m. registration.
The completed acceptance form should be mailed by
September 9, 1968, to: Code RAO, National Aeronautics and
Space Administration, Washington, D.C. 205+6. If there are
any additional questions, please contact Mr. William A.
McGowan, telephone ((AC-202) 962-1+601).
Sincerely yours,
Charles W. Harper
Deputy Associate. Administrator
(Aeronautics)
Office of Advanced Research
and Technology
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- Tentative Agenda -
Conference on Progress of NASA Research Relating to
Noise Alleviation of Large Subsonic Jet Aircraft
October 8, 9, and 10, 1968, NASA Langley Research Center
October 8, 1968
Welcome by NASA Officials
Remarks by DOT Official
Conference Scope,
(Langley) Guidelines, and Noise Concepts by Harvey H. Hubbard
I. Nacelle Acoustic Treatment Technology
Duct Lining Acoustic Materials and Concepts by R. A. Mangiarotty
(Boeing), A. H. Marsh (McDonnell Douglas), and E. A. Feder
(Pratt and Whitney)
Nonlinear Acoustic.Theory for Thin Porous Sheets by William E.
Zorumski (Langley)
Some Experimental Results on Inlet Suppressors by L. Jack
Smith (Lewis)
Prediction of Sound Attenuation in Acoustically Lined Ducts or
Suppressors by C. E. Feiler, E. J. Rice, and P. R. Wieber (Lewis)
Structural and Environmental Studies of Duct Lining Acoustic
Materials by H. A. Watson, Jr., and J. D. Thompson (McDonnell
Douglas) and Philip M. Edge, Jr., and Carl E. Rucker (Langley)
II. Nacelle Acoustic Treatment Application
Introductory Remarks by Harry T. Norton, Jr. (Langley)
Design Concepts by R. E. Pendley (McDonnell Douglas)
Ground Run-Up Tests of Prototype Treated Inlets and Fan Ducts by
A. H. Marsh, E. C. Zwieback, and J. D. Thompson (McDonnell Douglas)
Flight Test Nacelles by J. S. Coxon and C. A. Henry (McDonnell Douglas)
Noise Prediction and Economic Effects of Nacelle Modifications by
R. E. Pendley and A. H. Marsh (McDonnell Douglas)
Fan Duct Development by R. B. McCormick (Boeing)
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Treated Inlets by G. T. Drakeley and R. B. McCormick (Boeing)
Sonic Throat Inlets by C. C. Higgins (Boeing)
Noise Predictions and.Economic Effects of Nacelle Modifications
by D. C. Nordstrom (Boeing)
October 9 1968
III. Noise Generation and.Reduction at the Source
Design Considerations for a Quiet Engine by Joseph F. McBride (Lewis)
Quiet Engine Program by James J. Kramer (Lewis)
Compressor Noise Analysis by Martin Lawson (Wyle)
Potential of IGV Configurations for Inlet Noise Reduction by
David Chestnutt and John L. Crigler (Langley)
Jet Engine Internal Flow Noise Sources by Colin Gordon (Bolt
Beranek and Newman)
Crossed Beam Investigation of Local Sound Generation in Jets by
Fritz Krause (Marshall)
IV. Operational Considerations
Measurements for Evaluating the Noise Characteristics of Aircraft
by David A. Hilton and Herbert R. Henderson (Langley)
Predicted and Measured XB-70 Engine Noise by Norman J. McLeod,
Paul L. Lasagna, and Terrill W. Putnam (Flight)
Noise Measurements During Climbout and Landing Operations of Jet
Transports by W. Latham Copeland and Domenic J. Maglieri (Langley)
Flight Investigation of Methods for Implementing Noise Abatement
Landing Approaches by Hervey C. Quigley, Robert C. Innis, and
Emmett B. Fry (Ames)
Technique for Calculating Optimum Takeoff Trajectories for Noise
Abatement by Heinz Erzberger and Homer Q. Lee (Ames)
Propogation of Noise From Airport Ground Operations by Dwight
Bishop (Bolt Beranek and Newman)
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Ground Plane Effects of Far Field Sound Propagation by Stanley H.
Guest (Marshall)
The Effects of Atmospheric Refraction on Far Field Sound Propagation
by Orville E. Smith (Marshall)
Simulation of Aircraft Flyover Noise Signatures by Ernest
Hinterkeuser (Boeing-Vertol)
October 10, 1968
V. Subjective Reaction
Effects of Noise on Man by Karl D. Kryter (Stanford)
Studies Relating the Individual Characteristics of People With
Their Response to Noise by Richard G. Pearson (North Carolina
State University)
Perceived Noise Level Corrections for Pure Tones by Karl
Pearsons (Bolt Beranek and Newman)
Judgement Tests of Aircraft Noise by Karl D. Kryter (Stanford)
Building Vibrations Significant for Indoor Subjective Response by
William H. Mayes, Donald S. Findley, and Huey D. Carden (Langley)
Acoustic-Sociometric Studies of Airport Communities by William R.
Hazard and William Conner (Tracor)
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CONFERENCE ON PROGRESS OF NASA RESEARCH
RELATING TO NOISE ALLEVIATION OF LARGE SUBSONIC
JET AIRCRAFT
Langley Research Center
Hampton, Va.
October 8, 9, and 10, 1968
Company or Organization
Mail by September 9, 1968 TO:
Code RAO
NASA Headquarters
Washington, D.C. 205+6
WILL ATTEND ON
OCTOBER
8 9 10
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