HUP-3 / US Navy US Presidential Fleet Testing of the various versions

Testing of the various versions and configurations of the aircraft continued here at Patuxent River from the early 1950's through the early 1970's

Its unique compound taper wings hold twin pusher engines

F-22: Wingspan 5 1/2 inches

The China Clipper inaugurated mail service to the Pacific on November 22

aerodynamics

HUP-3 / US Navy US Presidential Fleet Testing of the various versionsUS Navy HUP 3 helicopter model. Versions of the HUP built for the U. S. Army were designated H 25 Army Mule. The tandem overlapping rotor configuration was a development by Piasecki and was used in future helicopter designs by the company and successors including the H 21, HRB 1 CH 46, and CH 47. The design featured two three bladed 35 foot diameter rotors in tandem in which blades could be folded for storage in ships hangars. The HUPs were powered by