Our heavyweight helicopter equal in the world does not have
In Rostov started production of the most load-lifting rotary-wing car The Russian holding «Helicopt[...]
Continuously variable camber
A recent development is a flexible-skinned wing where the aerofoil section can be bent by internal jacks to give varying degrees of camber. The purpose of this arrangement, is not primarily to provide a high lift coefficient for landing and take-off, but to enable the camber to be matched to the flight conditions. With this mechanism the aircraft can be flown with a high aerodynamic efficiency over a wide range of conditions; a feature that is particularly desirable in a combat aircraft which may be required to fly at subsonic, transonic and supersonic speeds during different phases of a mission. Figure 6.35 shows a F-111 fitted with a NASA experimental ‘mission adaptive wing’ of this type.
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Fig. 3.16 Extreme deflection on the flaps of an Andover The large amount of drag produced can sometimes be an advantage on landing |
