Mitchell U2
| Mitchell U2 | |
|---|---|
|
|
| Type: | Microlight |
| Design country: | |
| Manufacturer: |
Amateur construction |
| First flight: |
1979 |
| Number of pieces: |
? |
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The Mitchel U2 is an ultra-light flying wing aircraft for amateur construction based on the US specifications for ultra - light aircraft FAR-103.
variants
The construction from 1979 comes from the American flying wing specialist Don Mitchell . The decisive design goal was a curb weight of less than 115 kg in order to meet the US regulations for approval as an ultralight aircraft.
The wing always has a very similar design in all variants. It has a slight V-shape from the point of the rudder. The wing ribs are glued to the spar at right angles. At the kink, which runs parallel to the wing ribs, there is therefore a set jump . The outer wing is fastened with three bolts. If the front and lower bolts are loosened, the outer wing can be folded inwards after the rudder has been removed to make it easier to accommodate. A modified Wortmann FX05-191 is used as the wing profile. It is controlled by a Junkers double-wing trained elevons and fully rotatable winglets. The design is very reminiscent of the Russian ZAGI BP-1 from 1934.
The fuselage consists of a pilot's cabin and a motor with a pressure screw attached to a tubular steel support behind it. The tripod landing gear is not retractable, the nose wheel is steerable. The U2 is designed as a low-wing aircraft. In 2001 the German Wolfgang Uhl built the heavily modified version of the U2 shown here, which has a glider-like fuselage and a retractable three-legged landing gear.
The low- wing U2 was derived from the high-decker with the designation B10 with NACA 23015 profile. The B10 is very popular with American and European amateur builders and is available as a running launch glider or ultralight, with an open or closed cabin, as a kit or a plan set.
Technical specifications
- Span: 10 m
- Wing area: 12.6 m²
- Empty weight: <115 kg
- Max. Takeoff weight: 250 kg
- Engine: Zenoah G25 (two-stroke) with 16 kW
- Climbing rate: 2.0 m / s
- Top speed: ~ 110 km / h
- Stall speed: 42 km / h; 23 kn
See also
literature
- Rudolf Storck among others: Flying Wings . The historical development of the world's tailless and flying wing aircraft. Bernard and Graefe, Bonn 2003, ISBN 3-7637-6242-6 .
Web links
Individual evidence
- ↑ The rules for ultralight devices are set out in Section 103 ( January 19, 2012 memento in the Internet Archive ) of the Federal Aviation Regulations .