| A-11 | |
|---|---|
 | |
| An unmarked A-11 on display at the Central Air Force Museum, Monino | |
| Role | High performance single seat glider |
| National origin | Soviet Union |
| Manufacturer | Antonov |
| Designer | Oleg Antonov, Konstantinovitch |
| First flight | 12 May 1958 |
| Number built | 150 |
The Antonov A-11 is a single-seat, high performance, all-metal sailplane built in the Soviet Union in the late 1950s. 150 were produced.
The almost all-metal A-11 was Antonov's first non-wood framed sailplane. [1] It is a cantilever mid-wing monoplane, with straight tapered wings mostly swept on the trailing edge and set with 1.5° of dihedral but no washout. A single spar with a metal-skinned leading edge forward of it and fabric covering aft forms most of the span but the curved tips are supported by twin spars. The fabric-covered ailerons are slotted, with set-back hinges and mass balances. They can be drooped together through 8° to act as flaps. Inboard, there are slotted flaps on the trailing edges and spoilers, mounted at mid-chord and quite close to the fuselage, of the gapless kind opening upwards only. [2] : 342–3 [3]
The fuselage of the A-11 is a metal monocoque of pod and boom form, with a gradual transition between the two. It carries an all-metal, straight edged 90° V- or butterfly tail, its control surfaces mass-balanced with external weights. The three-piece canopy stretches smoothly from the nose to above mid-chord without a stepped windscreen. There is a retractable monowheel undercarriage, sprung but without brakes, assisted by a rubber-mounted skid forward of the wheel and a tail bumper aft, formed by a short, shallow ventral fin [2] : 34–6 [3]
The A-11 first flew on 12 May 1958. It was approved for aerobatics, spins and cloud flying. [2] : 38-9
Information from Ogden [4]
Data from The World's Sailplanes:Die Segelflugzeuge der Welt:Les Planeurs du Monde Volume II [2] : 342–3
General characteristics
Performance
Related development
Related lists List of gliders
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