Wassmer WA-28
| Wassmer WA-28 | |
|---|---|
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| Type: | single-seat high - performance glider |
| Design country: | |
| Manufacturer: | |
| First flight: |
May 1974 |
The Wassmer WA-28 Espadon ( German swordfish ) is a single-seat glider from the French manufacturer Wassmer Aviation . It is a further development of the WA-26 model and aerodynamically largely identical to it. In contrast to the WA-26, however, it is made entirely of GRP .
History and construction
After the technology of gliders with wooden wings was considered obsolete, Wassmer developed the WA-28 from the WA-26, which is aerodynamically identical but made entirely of GRP . The wings are equipped with Schempp-Hirth - air brakes fitted. The WA-28 is 20 to 25 kilograms heavier than the WA-26 and has a glide ratio of 38 at a speed of 90 km / h. It had its first flight in May 1974 and from November 1974 it was built in series. Twenty copies had been ordered by spring 1975.
The straight wings of the high- wing aircraft taper only slightly in the central part, which makes up about 60% of the wingspan. The outer wings taper more. The wings have a V-position over their entire length . The ailerons are located on the outer part of the wings.
The aircraft has a single retractable wheel that can be braked hydraulically and a small rigid tail spur. The pilot's seat is in a semi-recumbent position under a long canopy that opens to port.
Technical specifications
| Parameter | Data |
|---|---|
| crew | 1 |
| length | 7.65 m |
| span | 15.0 m |
| height | 1.66 m |
| Wing area | 12.6 m² |
| Wing extension | 17.82 |
| Glide ratio | 38 |
| Slightest sinking | 0.65 m / s at 88 km / h |
| Empty mass | 245 kg |
| Max. Takeoff mass | 378 kg |
Web links
Individual evidence
- ↑ a b Wassmer WA-26 Squale. j2mcl-planeurs.net, accessed on April 21, 2018 (French).
- ↑ a b c Martin Simons: Gliders . 2nd Edition. tape 3 (1965-2000) . EQIP, Königswinter 2004, ISBN 978-3-9808838-0-1 .
- ↑ Michael Hardy: Gliders & Sailplanes of the World . Ian Allen Ltd, London 1982, ISBN 0-7110-1152-4 (English).
