|
| Span |
Area |
Empty Weight |
Payload |
Gross Weight |
Wing Load |
Water Ballast |
| m |
ft |
sq.m |
sq.ft |
kg |
lb. |
kg |
lb. |
kg |
lb. |
kg
/sq.m |
lb.
/sq.ft |
kg |
lb. |
| 17 |
55.77 |
17.95 |
193.21 |
360 |
794 |
240 |
529 |
600 |
1323 |
31 |
6.34 |
0 |
0 |
| Aspect
ratio: |
16.1 |
| Airfoil: |
Wortmann FX-S0 2-196 and FX 60 - 126 |
| Structure: |
fiberglass and foam wing, fiberglass honeycomb sandwich fuselage and tail |
| Engine: |
|
Comment:
Schleicherﾒs entry to the composite two-seat
sailplane market, the ASK-21 first flew in 1979
and is approved for a number of aerobatic
maneuvers. Schempp-Hirth type airbrakes (upper
surface only), ailerons and elevators are
operated by pushrods in ball bearing; the rudder
is cable-operated. Wings attach with a tongue-
and-
fork connection and two pins. The fixed main
wheel is aft of the center of gravity, with a
nosewheel; a tailwheel is available as an option
instead of a skid. A flight test evaluation by
Dick Johnson demonstrated a best L/D of 31:1 but
this could likely be increased by installation
of
wing root and other seals. The United States Air
Force Academy operates 4 ASK-21ﾒs as the TG-9.
The Royal Air Force purchased 10 (known as the
Vanguard T. Mk. 1) for its Air Cadet training
program. ATC |
|
