| S-4 | |
|---|---|
| Role | Blended wing body aircraft |
| National origin | United States of America |
| Manufacturer | Arup Manufacturing Corporation |
| Designer | Dr. C.L. Snyder, Raoul Hoffman |
| First flight | 19 March 1935 |
| Introduction | 1935 |
| Number built | 1 |
| Developed from | Arup S-3 |
The Arup S-4 is the last in a series of round-wing aircraft from C.L. Synder.[1]
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The S-4 was engineered by Raoul Hoffman. The test pilot was Glenn Doolittle, a cousin of Jimmy Doolittle.[2]
The S-4 used a low aspect ratio, circular planform wing with a conventional landing gear and a small rudder with attached elevator on the rear of the fuselage. The aircraft was entered through a door mounted on the bottom of the aircraft.
The S-4 prototype flew extensively in promotional demonstrations. The S-4 was emblazoned with Sears Roebuck and Company logos. The aircraft was scrapped for war materials in World War II.[3]
A replica is on display in the atrium of South Bend Airport [6]
Data from Janes
General characteristics
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