Arup S-4

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
Retired bought and flown with a patched crack in its wood spar to a museum in the Dallas Ft Worth area in the early 70s
Number built 1
Developed from Arup S-3

The Arup S-4 (Model 104) is the last in a series of round-wing aircraft from C.L. Snyder.