Antonov A-11 Contents Design and development Aircraft on display Specifications (Antonov A-11) See also Notes References Bibliography Navigation menue
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Antonov A-11
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| 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.
Contents
1 Design and development
2 Aircraft on display
3 Specifications (Antonov A-11)
4 See also
5 Notes
6 References
7 Bibliography
Design and development
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
Aircraft on display
Information from Ogden[4]
- Central Russian Air Force Museum, Monino
Panevezys Airfield Monument
Specifications (Antonov A-11)
Data from The World's Sailplanes:Die Segelflugzeuge der Welt:Les Planeurs du Monde Volume II[2]:342-3
General characteristics
Crew: one
Length: 6 m (19 ft 8 in)
Wingspan: 16.5 m (54 ft 2 in)
Height: 1.2 m (3 ft 11 in) at cockpit
Wing area: 12.15 m2 (130.8 sq ft)
Aspect ratio: 22.4
Airfoil: TsAGI R 111 A[note 1]
Empty weight: 294 kg (648 lb)
Gross weight: 400 kg (882 lb)
Performance
Stall speed: 60 km/h (37 mph; 32 kn)
Never exceed speed: 350 km/h (217 mph; 189 kn)
Aerotow speed: 200 km/h (124.3 mph; 108.0 kn)
Winch launch speed: 120 km/h (74.6 mph; 64.8 kn)
g limits: +8.66 -3.9 at 300 km/h (186.4 mph; 162.0 kn)
Maximum glide ratio: 32 at 97 km/h (60.3 mph; 52.4 kn)
Rate of sink: 0.74 m/s (146 ft/min) at 86 km/h (53.4 mph; 46.4 kn)
Wing loading: 33 kg/m2 (6.8 lb/sq ft)
See also
 | Wikimedia Commons has media related to Antonov A-11. |
Related development
- Antonov A-9
- Antonov A-13
- Antonov A-15
Related lists
List of gliders
Notes
^ Most sources refer to P III; Simons refers to R III for the airfoil of the A-9 glider. The difference is generated by transliteration between Cyrillic script and Roman where p in Cyrillic is R in Roman script.
References
^ Simons, Martin (2006). Sailplanes 1945–1965 (2nd revised ed.). Königswinter: EQIP Werbung & Verlag GmbH. p. 135. ISBN 3 9807977 4 0..mw-parser-output cite.citationfont-style:inherit.mw-parser-output .citation qquotes:"""""""'""'".mw-parser-output .citation .cs1-lock-free abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .citation .cs1-lock-subscription abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registrationcolor:#555.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration spanborder-bottom:1px dotted;cursor:help.mw-parser-output .cs1-ws-icon abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center.mw-parser-output code.cs1-codecolor:inherit;background:inherit;border:inherit;padding:inherit.mw-parser-output .cs1-hidden-errordisplay:none;font-size:100%.mw-parser-output .cs1-visible-errorfont-size:100%.mw-parser-output .cs1-maintdisplay:none;color:#33aa33;margin-left:0.3em.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-formatfont-size:95%.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-leftpadding-left:0.2em.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-rightpadding-right:0.2em
^ abcd Shenstone, B.S.; K.G. Wilkinson (1963). The World's Sailplanes:Die Segelflugzeuge der Welt:Les Planeurs du Monde Volume II (in English, French, and German) (1st ed.). Zurich: Organisation Scientifique et Technique Internationale du Vol a Voile (OSTIV) and Schweizer Aero-Revue.
^ ab Taylor, John W R (1962). Jane's All the World's Aircraft 1962–63. London: Sampson Low, Marston & Co. Ltd. p. 342.
^ Ogden, Bob (2011). Aviation Museums and Collections of North America (2 ed.). Tonbridge, Kent: Air-Britain (Historians). pp. 357, 464. ISBN 978-0-85130-385-7.
Bibliography
.mw-parser-output .refbeginfont-size:90%;margin-bottom:0.5em.mw-parser-output .refbegin-hanging-indents>ullist-style-type:none;margin-left:0.mw-parser-output .refbegin-hanging-indents>ul>li,.mw-parser-output .refbegin-hanging-indents>dl>ddmargin-left:0;padding-left:3.2em;text-indent:-3.2em;list-style:none.mw-parser-output .refbegin-100font-size:100%
Ogden, Bob (2011). Aviation Museums and Collections of North America (2 ed.). Tonbridge, Kent: Air-Britain (Historians). pp. 357, 464. ISBN 978-0-85130-385-7.
Shenstone, B.S.; K.G. Wilkinson (1963). The World's Sailplanes:Die Segelflugzeuge der Welt:Les Planeurs du Monde Volume II (in English, French, and German) (1st ed.). Zurich: Organisation Scientifique et Technique Internationale du Vol a Voile (OSTIV) and Schweizer Aero-Revue. pp. 242–243.
Simons, Martin (2006). Sailplanes 1945–1965 (2nd revised ed.). Königswinter: EQIP Werbung & Verlag GmbH. p. 135. ISBN 3 9807977 4 0.
Taylor, John W R (1962). Jane's All the World's Aircraft 1962–63. London: Sampson Low, Marston & Co. Ltd. p. 342.
Categories:
- Soviet sailplanes 1950–1959
- Antonov aircraft
- Glider aircraft
- Aircraft first flown in 1958
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