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
The Göppingen Gö 4 or Goevier is a German sailplane of the late 1930s used for training pilots. Its most notable features include side-by-side seating and dual controls, making the plane ideal for use as a trainer. It boasted average performance, compared to other gliders of the day, and was advertised as making the process of learning to fly sailplanes easier.
The Lo-100 is an aerobatic glider of classic wood and fabric construction well suited to amateur building methods. The designation Lo was bestowed by the designer Alfred Vogt in memory of his brother Lothar Vogt, with whom he had developed the predecessor model Lo-105 Zwergreiher. The first flight of the prototype took place in 1952 at the Klippeneck. An example is on display at the Gliding Heritage Centre.
The Aer-Pegaso M-100 was a single-seat glider designed and built in Italy from 1957.
The Antonov A-13 was a Soviet aerobatic sailplane flown in the 1950s and 1960s. It was a small, single-seat, all-metal aircraft developed from the A-11 which could optionally be fitted with that aircraft's longer-span wings. It was a mid-wing monoplane with a tadpole-like fuselage and a V-tail.
The SZD-6x Nietoperz was a single-seat tail-less experimental glider aircraft that was designed and built in Poland at Szybowcowy Zakład Doświadczalny in Bielsko-Biała in 1951. Only one example was constructed.
The SZD-12 Mucha 100 was a single-seat glider aircraft that was designed and built in Poland from 1953.
The SZD-17X Jaskółka L was a single-seat high-performance competition glider designed and built in Poland at Szybowcowy Zakład Doświadczalny in Bielsko-Biała in 1955.
The IS-5 Kaczka was a single-seat canard research glider designed and built in Poland from 1948.
The OMRE OE-1 was an experimental high performance sailplane designed and built in Hungary during 1950–1951.
The Rubik R-26 Góbé is a family of Hungarian shoulder-wing, two-seat training gliders that was designed by Ernő Rubik Sr., and produced by Auto-Aero. After its introduction the R-26 Góbé became the de facto training glider type in Hungary and is still used by many clubs for basic instruction.
The Hütter Hü 17, is a German high-wing, strut-braced, single-seat, utility training glider that was designed by brothers Ulrich Hütter and Wolfgang Hütter in the 1930s.
The HKS-1 was a German 19 19 m (62.3 ft) span high performance two seat sailplane, designed around 1950 to use recent advances in laminar flow airfoils. To avoid premature transition from laminar flow caused by surface interruptions, the HKS-1 dispensed with hinged ailerons, flaps and spoilers and replaced them with a flexible trailing edge. Two were built, setting several records.
The Bréguet Br 905 Fauvette is a single-seat, standard class, competition sailplane, designed and produced in France from the late 1950s. Some 50 were built but most remained grounded after a structural accident in 1969; a few remain airworthy.
The Ikarus Košava is a two-seat sailplane designed and built in Yugoslavia in the early 1950s. It won the 1954 World Gliding Championships in the two seat category and came second in the same event two years later.
The Cijan-Obad Orao is a competition single seat sailplane designed in Yugoslavia just after World War II, one of the most advanced of its type at the time. It flew in three World Gliding Championships, having greatest success at its first in 1950 when it reached third place.
The Ikarus Meteor is a long-span, all-metal sailplane designed and built in Yugoslavia in the 1950s. It competed in World Gliding Championships (WGC) between 1956 and 1968 and was placed fourth in 1956; it also set new triangular-course world speed records.
The Rubik R-25 Mokány, in English: Plucky person and sometimes known as the R-25 Standard (class), is a Hungarian single seat Standard Class glider of all-metal construction, first flown in 1960. It was one of a series of similar aircraft designed by Ernő Rubik. Only one was built.
The Ciani EC 38/56 Urendo, or SSVV EC 38/56 Urendo is an Italian tandem-seat training glider from the 1950s. Four were built, one winning the Italian National Championships in 1959. Another, restored, still flies.
The Ciani EC.37/53 Spillo or SSVV EC.37/53 Spillo was a single seat competition glider designed and built in Italy in the 1950s. It had the highest aspect ratio wing of any wooden glider. Only one was built.
The Schleicher Ka-2 Rhönschwalbe is a tandem two-seat training glider designed and built in Germany, in 1952.