Helisoar/du Pont HP-10 - N319Y
Location: Pioneer Airport
The HP-10 was designed by Richard Schreder and made its first flight in 1961. Richard designed the sailplane to give a low sink rate and still allow high speed travel. The HP-10 was supplied as a kit to be built by the customer.
Extremely clean, the HP-10’s long wing was constructed of eight aluminum honeycomb-sandwich panels and presented an aspect ratio of 20.6. The 32 foot flap span gave reduced sink while permitting high speed and acting as a dive brake. The fuselage was all metal, and the craft landed and took off on its single wheel.
The HP-10 was usually towed aloft by another airplane to about 2000 feet, where the sailplane was released. By seeking out rising columns of air, a pilot could stay aloft in the sailplane all day, travel hundreds of miles, and attain nearly 35,000 feet of altitude.
Stephen du Pont built his own HP-10 sailplane, which he donated to the EAA AirVenture Museum in 1968.
|
Wing Span |
48 ft. |
|
Length |
21 ft. 11 in. |
|
Wing Area |
114 sq. ft. |
|
Chord |
28.5 in. |
|
Maximum Speed |
150 mph |
|
Stall Speed |
38 mph |
|
Empty Weight |
475 lbs. |
|
Gross Weight |
875 lbs. |
