Analysis of Flying Object Incidents in the United States, 1949

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d. ARUP TAILLESS MONOPLANE. Jane's "All the World's Aircraft" (1935 edition) describes this airplane as "a two-seat machine with a 70 h.p. LeBlond engine.... This has a high aspect ratio wing with straight leading-edge and built in nacelle...." In plan form, the wing is almost semi-circular.

An Air Force film, "Aeronautical Oddities", shows this airplane in flight at South Bend, Indiana and in some attitudes appears identical to the photograph included in Appendix "C" as Figure 4. Although it is believed that the ARUP Manufacturing Co. is no longer in existence, it is possible that later models of this or similar U.S. civil aircraft may have been observed.

Span 22 feet
Length 19 feet
Power Plant 1 LeBlond engine
Max. Speed 86 miles per hour

see views of an Experimental Arup tailless Monoplane.

Fig. 9

5. ALTHOUGH APPENDIX "D" is not intended to explain conclusively the phenomenon of "Flying Saucers" the possibility of unconventional type aircraft being the cause of flying disk reports must not be overlooked.

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