HP-11 Airmate HP Aircraft, LLC   

General Details
Manufacturer: HP Aircraft, LLC
Plane Name:

HP-11 Airmate

Classified as: Unclassified
Country Of Origin: U S A
Designer: R. E. Schreder
No. of Seats 1
No. Built 42
L/DMax: 37 89 kph/ 48 kt / 55 mph
MinSink: 0.55 m/s / 1.8 fps / 1.07 kt


Span Area Empty Weight Payload Gross Weight Wing Load Water Ballast
m ft sq.m sq.ft kg lb. kg lb. kg lb. kg
kg lb.
15.85 52 9.66 104 181 400 113 250 294 650 30.43 6.25 0 0
Aspect ratio: 26
Airfoil: NACA 65 (3)-618
Structure: all metal

The HP-11 was produced in 1962 in time for the 1962 U.S. Nationals, in which Schreder placed third and made the longest flight, 754.8 km./ 469 miles; he later placed third in the Open Class at the 1963 World Championship at Junin, Argentina. The –11A, an improved version, has a retractable wheel. Some significant modifications were made in a number of the kit- built HP-11’s including, for example, the Kohler Alpha which mated a new fuselage on to the wings of an HP-11. Michael Bowlus used the tail of an HP-18 and the wings of an HP-11, reduced to 15 m., to develop his BZ-1, which first flew in 1984. This has an adapted North American F-86 Sabre drop tank for the front end of the fuselage, interconnected flaps and ailerons (the former extending to 90 degrees for approach control) and increased empty and gross weight of 249 kg/ 550 lb. And 364 kg/ 780 lb respectively. One HP-11 belongs to the National Soaring Museum.


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