Henry Preiss is a sailplane designer. He was a longtime friend and neighbor of Richard Schreder and they worked together to develop and build several examples each of the RHJ-7 and RHJ-8 two-seat sailplanes, and also the RHJ-9 and RHJ-10. Preiss also finished the Schreder HP-19.
The RHJ sailplanes were developed on-the-fly; neither Preiss nor Schreder kept detailed plans or design drawings, and made only what sketches were necessary for the basic engineering validation of the structure.
References
- Sailplane directory Archived 2011-09-28 at the Wayback Machine
- Rogers, Bennett: 1974 Sailplane Directory, Soaring Magazine, page 36. Soaring Society of America, August 1974. USPS 499-920
- Said, Bob: 1983 Sailplane Directory, Soaring Magazine, page 57-58. Soaring Society of America, November 1983. USPS 499-920
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