Akaflieg Munich Mü 22

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Akaflieg Munich Mü 22
The Mü 22b
Type: Glider
Design country:

Germany Federal RepublicFederal Republic of Germany BR Germany

Manufacturer:

Akaflieg Munich

First flight:

1954

Number of pieces:

2

The Akaflieg Munich Mü 22 is a glider of the student flying group Akaflieg Munich with a V-tail .

history

The surfaces of Akaflieg Mü 22a

With the support of the State Ministry of Transport and after the Allies eased the construction and flight ban, the students of Akaflieg Munich began under the leadership of Prof. Dr.-Ing. Julius Krauss in 1953 with the construction of her first aircraft after the Second World War. A laminar profile was used here for the first time in the history of Akaflieg Munich . The first flight of the Mü 22a took place as early as 1954, and in the first few years it served primarily as a test aircraft for various tail unit configurations. Shortly after it had taken second place in the open class of the German gliding championships in 1959, it was destroyed in an accident.

Shortly thereafter, work on an improved version of the crashed Mü 22a began with the Mü 22b. The variant was able to complete its first flight in 1964, although this aircraft was almost lost during flight tests due to a break in the tail unit . However, after the pilot's successful emergency exit, the aircraft slid relatively gently to the ground and was only slightly damaged.

construction

Like all aircraft of the so-called Munich School, the fuselage of the Mü 22 consists of a tubular steel frame covered with fabric. The surfaces that have a laminar profile were also conventionally made of wood. However, in order to obtain a uniform surface and shape accuracy, a very narrow rib spacing of only 110 mm was chosen, which meant an increased workload in design and production. On the other hand, this design can be compared with that of modern plastic aircraft in terms of dimensional accuracy. In order not to influence the air flow on the upper side of the wing, airbrakes were dispensed with and spreading flaps were installed instead.

variants

Mü 22a

The Mü 22a, with its first flight in 1954, was conventionally designed according to the Munich School , i.e. with a covered tubular steel fuselage and wooden wings. It served mainly as a test aircraft and was lost in an accident in 1959 shortly after the flight tests were completed.

Mü 22b

The Mü 22b was the successor to the Mü 22a and retained the essential design elements of the previous model. However, it received a pendulum V-tail and a fiberglass plastic shell in the front area of ​​the fuselage to reduce the flow resistance.

Mü 26 (Mü 22d)

At the end of the 1960s, work began on another variant of the Mü 22. However, the project quickly grew beyond a variant and so it was decided to rename the project to Mü 26 . With its fuselage made entirely of fiber composite materials, it only looks similar to the Mü 22.

Technical specifications

Parameter Mü 22a Mü 22b Mü 26 (Mü 22d)
crew 1
length 6.85 m 7.41 m
span 16.6 m 17 m 16.6 m
Torso height 1.12 m
Wing area 13.54 m² 13.7 m² 15.3 m²
Wing extension 20.4 21.1 18.0
Empty mass 250 kg 280 kg 212 kg
Max. Takeoff mass 400 kg 360 kg 382 kg
Glide ratio 36
Slightest sinking 0.5 m / s at 62 km / h 0.56 m / s at 69 km / h 0.6 m / s at 83 km / h

See also

literature

Web links

Commons : Mü 22  - Collection of images, videos and audio files

Individual evidence

  1. ↑ Martin Simons: Sailplanes 1945-1965. Eqip, Königswinter 2006, ISBN 3-9807977-4-0 , p. 157.
  2. ↑ a b The Mü 22a on the Akaflieg Munich website , accessed on July 29, 2012
  3. ↑ The Mü 26 on the Akaflieg Munich website , accessed on July 29, 2012