| 词条 | FVA-3 Ente | |||||||||||||
| 释义 |
The FVA-3 Ente was a canard two-seat glider built in Germany in 1922.[2] DevelopmentAfter the relative success of the FVA-1 Schwatze Düvel and FVA-2 Blaue Maus, Wolfgang Klemperer designed and built the canard FVA-3 Ente. Using similar construction methods to the earlier gliders, Klemperer built the FVA-3 from wood with fabric covering, the thick cantilevered mainplane supporting a wide fuselage, extending forwards from the centre section, enclosing the side-by side cockpit forward of the mainplane and supporting the forward plane which was mounted on spherical bearings to provide control in pitch and yaw. On the ground the FVA-3 was supported by two fixed skids faired by large trousers similar to the FVA-1 and FVA-2.[2] The control system used the foreplane and 1.2 m (3 ft 11 in) span slotted ailerons at the tips of the mainplane. Fore and aft movement of the stick altered the angle of attack of the whole foreplane raising or lowering the nose. Side to side movement of the stick operated the mainlane ailerons in a conventional fashion to control the bank angle (i.e. stick left -left aileron up right aileron down and vice versa). The sole yaw control, as the aircraft had neither fin nor rudder, consisted of applying left or right foot operated rudder pedal deflected small servo flaps on the trailing edge of the foreplanes to tilt the foreplanes;left plane low for the nose to yaw left and right plane low for the nose to yaw right.[2] Flight tests revealed a poor weight distribution requiring the aircraft to be dismantled and the centre of gravity adjusted.[2] Specifications{{aerospecs|ref= |met or eng?=met |crew=1 |capacity=1 passenger |length m= |length ft= |length in= |span m= |span ft= |span in= |height m= |height ft= |height in= |wing area sqm= |wing area sqft= |aspect ratio= |wing profile= |empty weight kg= |empty weight lb= |gross weight kg= |gross weight lb= |eng1 number= |eng1 type= |eng1 kw= |eng1 hp= |eng2 number= |eng2 type= |eng2 kw= |eng2 hp= |max speed kmh= |max speed mph= |stall speed kmh= |stall speed mph= |glide ratio= |sink rate ms= |sink rate ftmin= |armament1=}} References1. ^Über uns 2. ^1 2 3 4 5 6 FVA-3 "Ente" 1 : German sailplanes 1920–1929 |
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