Preiss RHJ-7

Last updated
RJH-7
RoleSailplane
National originUnited States
Manufacturer Henry Preiss
DesignerHenry Preiss
First flight1966
Number built1

The Preiss RHJ-7 is a side-by-side two-seat flapped glider developed by Preiss from a Schreder HP-14. The design used standard HP-14 wings with a 2 ft (0.6 m) center section added to the fuselage, V-tail, fixed undercarriage and a single control stick between the seats. The RHJ-7 first flew in 1966 and was the starting point for the RHJ-8 and RHJ-9 variants, also homebuilts.

Glider (sailplane) type of glider aircraft used in the sport of gliding

A glider or sailplane is a type of glider aircraft used in the leisure activity and sport of gliding. This unpowered aircraft uses naturally occurring currents of rising air in the atmosphere to remain airborne. Gliders are aerodynamically streamlined and are capable of gaining altitude and remaining airborne, and maintaining forward motion.

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.

Schreder HP-14

The HP-14 is a Richard Schreder-designed all-metal glider aircraft that was offered as a kit for homebuilding during the 1960s and 1970s. It was originally developed by retrofitting improved wings to the fuselage and tail of the HP-13. Schreder won the 1966 US national soaring championship in the prototype HP-14.

Specifications

General characteristics

Performance

  • Maximum glide ratio: 38 (at 105 km/hr)
  • Rate of sink: 0.61 m/s (120 ft/min)

Related Research Articles

Aero A.200 sport aircraft

The Aero A.200 was a sportsplane of Czechoslovakia, designed and built specifically to compete in Challenge 1934, the European touring plane championships. It was a four-seater low-wing monoplane.

The Preiss RHJ-8 is a homebuilt side-by-side two-seat flapped glider. It is an evolution of the Preiss RHJ-7, which was developed from a Schreder HP-14. The wingspan was slightly increased and the empennage was changed to a T-configuration, with the stabilator mounted atop the vertical stabilizer. The undercarriage is partially retractable and the large canopy swings open to the rear.

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 was adopted employing foam ribs bonded to the aluminum spars and skins. It first flew in 1978.

The Auster Avis was a four-seat light aircraft developed from the Auster Autocrat. It featured a redesigned fuselage incorporating four doors and a circular cross-section towards the tail, new undercarriage, and new wing flaps. It was planned in two versions, the Mk 1 for civil use, and the Mk 2 for military and air ambulance duties. However, only two prototypes were built, and Auster abandoned the project in favour of the Auster J-5 Autocar.

The Fisher Boomerang is a single-seat conventional landing gear, high-winged monoplane ultralight aircraft designed by Michael Fisher and introduced in mid-1982.

Akaflieg Berlin B13 two-seat motor-glider

The Akaflieg Berlin B13 is a two-seat motor-glider designed and built in Germany.

Rans S-12 Airaile ultralight aircraft

The Rans S-12 Airaile is a family of related American single-engined, pusher configuration, high-wing monoplanes designed by Randy Schlitter and manufactured by Rans Inc. The aircraft are available in kit form for amateur construction.

The Schreder Airmate HP-9 is an American high wing, single seat glider that was designed by Richard Schreder and intended to be flown by the designer in the 1960 World Gliding Championships.

The Schreder HP-19 is an American, high-wing, T-tail, single seat glider designed by Richard Schreder.

The Pottier P.220S Koala is a French two-seat light homebuilt aircraft and built by Avions Pottier. Further three and four seat variants were also developed.

ProFe D-8 Moby Dick

The ProFe D-8 Moby Dick is a family of Czech pusher configuration, parasol wing, strut-braced, V-tailed, motor gliders that was designed and produced by ProFe. The aircraft is named for the great white whale of Herman Melville's novel of the same name and was supplied as a kit for amateur construction.

The Seahawk Condor is an American ultralight aircraft that was designed by Buddy Head, Bob Carswell and Dave French and produced by Seahawk Industries and later by Condor Aircraft. The aircraft was supplied as a kit for amateur construction.

The Worldwide Ultralite Spitfire is an American ultralight aircraft that was designed by Fred Bell and manufactured by Worldwide Ultralite Industries and later by Don Ecker and Air Magic Ultralights of Houston, Texas. The aircraft was supplied as a kit for amateur construction.

The Ikarus C52 is a German ultralight aircraft, designed and produced by Comco Ikarus, introduced at the Aero show held in Friedrichshafen in 2011. The aircraft is supplied as a complete ready-to-fly-aircraft.

The Pro-Composites Vision is an American amateur-built aircraft, designed by Steve Rahm and produced by Pro-Composites of Buffalo Grove, Illinois. The aircraft is supplied in the form of plans for amateur construction, with some pre-formed parts made available to speed construction.

Yuneec International EViva

The Yuneec EViva is a Chinese low-wing, two-seat motor glider that was designed by Martin Wezel is now under development by Yuneec International of Kunshan, Jiangsu.

Bede BD-12

The Bede BD-12 was an American homebuilt aircraft designed by Jim Bede and produced by Bede Aircraft of Medina, Ohio, introduced in the 1990s. The aircraft was intended to be supplied as a kit for amateur construction, but only one was ever built.

InterPlane Starboy aircraft by InterPlane

The InterPlane Starboy was a proposed Czech homebuilt aircraft designed by InterPlane Aircraft of Zbraslavice. The aircraft was intended to be supplied as a complete ready-to-fly-aircraft or as a kit for amateur construction, but none seem to have been built.

The V-STOL Pairadigm is an American twin-engine center-line thrust STOL homebuilt aircraft that was designed and produced by V-STOL Aircraft Corporation of Fort Myers, Florida, introduced in the late 1990s. When it was available the aircraft was supplied as a kit for amateur construction.

Sikorsky S-17

The Sikorsky S-17 was a Russian single engine aircraft built at the Russian Baltic Railroad Car Works in Petrograd while Igor Sikorsky was the chief engineer of the aircraft manufacturing division.

References