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Helicopter principles : lectures delivered to class XXXIV, the Naval Test Pilot School, Naval Air Test Center, Patuxent River, Maryland

"The helicopter lectures were inaugurated at the Naval Test Pilot Shool in 1961."--Foreword. Introduction to the helicopter -- Performance -- Stability and control -- Systems -- Vibrations -- VTOL and ...
The Aviationist

An Overview of the U.S. Army’s New Training Helicopter Competition

Bell, M1 and Lockheed Martin have been selected for the next phase of the U.S. Army’s Flight School Next competition. Let’s see what each proposal brings to the competition. The U.S. Army directly ...