The Schreder Airmate HP-9 is an American
high wing
A monoplane is a fixed-wing aircraft configuration with a single mainplane, in contrast to a biplane or other types of multiplanes, which have multiple planes.
A monoplane has inherently the highest efficiency and lowest drag of any wing confi ...
, single seat
glider
Glider may refer to:
Aircraft and transport Aircraft
* Glider (aircraft), heavier-than-air aircraft primarily intended for unpowered flight
** Glider (sailplane), a rigid-winged glider aircraft with an undercarriage, used in the sport of glidin ...
that was designed by
Richard Schreder and intended to be flown by the designer in the 1960
World Gliding Championships.
[Said, Bob: ''1983 Sailplane Directory, ]Soaring Magazine
''SOARING'' is a magazine published monthly as a membership benefit of the Soaring Society of America. It was first published in 1937. The headquarters is in Hobbs, New Mexico. The magazine's article topics include safety issues and accounts of ind ...
'', page 18. Soaring Society of America, November 1983. USPS 499-920
Airmate was the name of Schreder's design company.
Design and development
The HP-9, the ''HP'' indicating ''high performance'', was Schreder's
FAI Standard Class follow-on design to the
FAI Open Class
Competition classes in gliding, as in other sports, mainly exist to ensure fairness in competition. However the classes have not been targeted at fostering technological development as in other sports. Instead classes have arisen because of:
* t ...
HP-8 and was built to compete in the 1960 Worlds in the newly established Standard Class, but was not completed in time. The HP-9 was sold unfinished to Bob Litle, Jr who had
Javelin Aircraft
The Javelin Aircraft Company was an American aircraft manufacturer based in Wichita, Kansas. The company specialized in the design and manufacture of homebuilt aircraft in the form of plans for amateur construction.Purdy, Don: ''AeroCrafter - H ...
complete the glider.
The HP-9 is constructed entirely of
aluminium
Aluminium (aluminum in American and Canadian English) is a chemical element with the symbol Al and atomic number 13. Aluminium has a density lower than those of other common metals, at approximately one third that of steel. I ...
and has an all-flying
stabilator
A stabilator is a fully movable aircraft horizontal stabilizer. It serves the usual functions of longitudinal stability, control and stick force requirements otherwise performed by the separate parts of a conventional horizontal stabilizer and el ...
tail. The aircraft also features
dive brakes
Diving most often refers to:
* Diving (sport), the sport of jumping into deep water
* Underwater diving, human activity underwater for recreational or occupational purposes
Diving or Dive may also refer to:
Sports
* Dive (American football), a ...
and a retractable monowheel undercarriage. The wing has
Fowler flap
A flap is a high-lift device used to reduce the stalling speed of an aircraft wing at a given weight. Flaps are usually mounted on the wing trailing edges of a fixed-wing aircraft. Flaps are used to reduce the take-off distance and the landing ...
s which increase the wing area from and lower the minimum sink speed to 2.11 feet per second (0.64 m/s) at from 2.26 ft/s (0.69 m/s) at .
Only one HP-9 was built.
Operational history
The sole HP-9 was still in existence in April 2011 and was listed by the
Federal Aviation Administration
The Federal Aviation Administration (FAA) is the largest transportation agency of the U.S. government and regulates all aspects of civil aviation in the country as well as over surrounding international waters. Its powers include air traffic m ...
as having been sold to the
Centre County, Pennsylvania
Centre County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 158,172. Its county seat is Bellefonte. Centre County comprises the State College, PA Metropolitan Statistical Area.
History
The lands ...
Visitor Bureau.
Specifications (HP-9)
See also
References
{{Schreder Sailplanes
1960s United States sailplanes
Schreder aircraft