May 1957 American ModelerTable of Contents
Some things never grow old. These pages from vintage modeling magazines like American Aircraft Modeler, American Modeler, Air Trails, Flying Aces, Flying Models, Model Airplane News, & Young Men captured the era. I will be glad to scan articles for you. All copyrights are hereby acknowledged.
"Flying Platform" Gets Three Engines
Photos and text by Howard Levy
Helicopters received $500,831 contract from U. S. Army for the production
of two prototypes of multi-engine "Flying Platforms." Similar in appearance
to original "Platform" unveiled in 1955 (powered by two Nelson 2-cycle engines
developing 44-hp each), new version is powered by three Nelsons. Design
refinements developed after extensive testing of the twin-engine prototype.
In the 3-engine job pilot stands higher over shroud. New airfoil sections
appearing to be form of directional control have been added under the shroud.
The "Flying Platform," an extremely simple and compact aircraft, employs ducted fan principle of lift (shrouded props which gain lift by channeling air in combination with directing flow of air over lipped orifice). The operator relies on body balance and movement for inflight directional control.
Hiller feels that many variations of the "Flying Platform" are possible and that large "Platforms" for long range and small ones for short range missions could be successful. Field evaluation of the complete range of possibilities for the ducted fan principle of lift in tactical applications will be an important part of the Army test program.
Posted June 9, 2013