The Preiss RHJ-9 is an evolution of the
RHJ-7 and
RHJ-8 side-by-side two-seat flapped homebuilt
gliders. The wingspan was increased to 18.29 m and the maximum mass was raised to 500 kg. A wing construction similar to that of the later
HP-18
The HP-18 is a Richard Schreder-designed metal Racing Class sailplane that was offered as a kit for homebuilding during the 1970s and 1980s.
Design and development
The HP-18 is a flapped (15-meter) sailplane featuring a V-tail and 90-degree ...
was adopted employing foam ribs bonded to the aluminum spars and skins. It first flew in 1978.
Specifications
References
sailplanedirectory.com
External links
1970s United States sailplanes
Glider aircraft
Aircraft first flown in 1978
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