Aviation Glossary
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HANGAR
Definition of: HANGAR
An enclosed structure for housing aircraft. Originated with the floating homes of the original German Zeppelins in which they were "hung" from cables, which explains the erroneous, oft-seen spelling of "hanger." French: shed, outbuilding, from Latin: angarium,shed.
HELICOPTER
Definition of: HELICOPTER
A wingless aircraft acquiring its lift from revolving blades driven by an engine about a near-vertical axis. A ROTORCRAFT acquiring its primary motion from engine-driven rotors that accelerate the air downward, providing a reactive lift force, or accelerate the air at an angle to the vertical, providing lift and thrust.
HIGH BLOWER
Definition of: HIGH BLOWER
A blower-type supercharger set at high rpm
HIGH-SPEED STALL
Definition of: HIGH-SPEED STALL
Any stall made to occur at more than 1g, such as pulling out of a dive or while turning.
HORSEPOWER
Definition of: HORSEPOWER
The motive energy required to raise 550# one foot in one second, friction disregarded.
HYPERSONIC
Definition of: HYPERSONIC
Speed of flight at or greater than Mach 5.0.
