|
| 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. |
| 12.98 |
42.64 |
13.8 |
144 |
172 |
380 |
113 |
250 |
285 |
630 |
20.65 |
4.4 |
0 |
0 |
| Aspect
ratio: |
12.6 |
| Airfoil: |
Modified NACA 33012/33010 |
| Structure: |
wood wing with Dacron covering. Fuselage is fiberglass. |
| Engine: |
|
Comment:
Marske redesigned his earlier Pioneer IA for
homebuilt construction, and the result was the
Pioneer II. The wing, which has separate
ailerons and flaps, had the span reduced to 13
m. so it could be built in a standard 20 ft.
garage. Upper-and-lower surface airbrakes are
used for glidepath control. Because a tailless
sailplane has a narrow center of gravity range,
an adjustable seat was positioned above the
fixed landing wheel, which itself is on the
center of gravity. The pilot simply moves the
seat until his/her own weight balances the ship
on the wheel. The IID model is similar to the
earlier IIﾒs, but with a swept back vertical
tail and modified wing leading edge. At least
one Pioneer II has been modified by adding tip
extensions to increase the wingspan to 14.0 m. |
|
