AFOIN-1A1-19/Maj Fountain/hf/52618
Wrtn 23 Sep 55
INT2-2-7
1x a a Argentina
26 SEP 1955
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AFOIN-1A1-19
SUBJECT: (Uncl) Theory of Flying Saucers
TO: United States Air Attache
American Embassy
Buenos Aires, Argentina
1. Reference is made to your letter 197-R&D, subject "Theory of Flying Saucers" dated 24 May 1955 and our interim reply of 1 Sep 1955.
2. The Aerodynamics Branch, Aircraft Laboratory of the Wright Air Development Center, have submitted the following evaluation of the theory contained in Dr. Neumann's manuscript.
a. The method of obtaining lift described in the report is considered very ineffective as it is based on the principle of imparting horizontal momentum to the jet and entrained air. Lift can only be produced by imparting vertical momentum to the air or jet stream.
b. The method described for producing translational control through introducing an assymetry in the jet should be effective. This type of control, however, does not provide all the control needed in an aircraft. In summary, this office does not consider the proposal to be worth further investigation.
3. No further action in this matter is contemplated by this headquarters. In accordance with your request, the original manuscript is inclosed for transmission to Dr. Neumann.
BY ORDER OF THE CHIEF OF STAFF:
SIGNED
JAMES T. BULL
Colonel, USAF
Intelligence
1 Incl W/orig only
Manuscript in German,
Theory of Flying Saucers.
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OFFICE SYMBOL
Signature of Responsible Officer
Internal Office
Classification
1
AFOIN-1A1
2
3
4
5
6
Col Opper
OIN-1A1-19
Maj Fountain
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D/I FILE COPY
OUT
2 SEP 1955
DIR/INT
HD USAF
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NW 911198 DocId:34745775
Page 199