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DuPont DP-2 uses the same VTOL concept as the Bell X-14A experimental airplane. Hot exhaust is turned to point straight downwards to provide vertical lift.

DP-2 nozzles are simplified versions of the rear exhaust on  current-Production Lockheed-Martin F-35B VTOL airplane for the United States Marine Corps.


DuPont’s primary innovation was using composite materials

In high temperature environments like exhaust nozzles. Unfortunately, even DuPont’s best composites deteriorated at high temperatures.


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