The ProFe D-8 Moby Dick is a family of

Czech Czech may refer to: * Anything from or related to the Czech Republic, a country in Europe ** Czech language ** Czechs, the people of the area ** Czech culture ** Czech cuisine * One of three mythical brothers, Lech, Czech, and Rus *Czech (surnam ...

pusher configuration In aeronautical and naval engineering, pusher configuration is the term used to describe a drivetrain of air- or watercraft with propulsion device(s) after the engine(s). This is in contrast to the more conventional tractor configuration, wh ...

parasol 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 wings. A monoplane has inherently the highest efficiency and lowest drag of any wing confi ...

strut-braced In aeronautics, bracing comprises additional structural members which stiffen the functional airframe to give it rigidity and strength under load. Bracing may be applied both internally and externally, and may take the form of struts, which act in ...

V-tail The V-tail or ''vee-tail'' (sometimes called a butterfly tail or Rudlicki's V-tailGudmundsson S. (2013). "General Aviation Aircraft Design: Applied Methods and Procedures" (Reprint). Butterworth-Heinemann. p. 489. , 9780123973290) of an aircraf ...

ed,

motor glider A motor glider is a fixed-wing aircraft that can be flown with or without engine power. The FAI Gliding Commission Sporting Code definition is: a fixed-wing aerodyne equipped with a means of propulsion (MoP), capable of sustained soaring flig ...

s that was designed by Oldřich Olšanský, M.Sc, and produced by ProFe as well by several amateur builders according to available plans. The aircraft is named for the great white whale of

Herman Melville Herman Melville (Name change, born Melvill; August 1, 1819 – September 28, 1891) was an American novelist, short story writer, and poet of the American Renaissance (literature), American Renaissance period. Among his best-known works ar ...

's novel of the same name and was supplied as a kit for amateur construction.Purdy, Don: ''AeroCrafter - Homebuilt Aircraft Sourcebook'', page 301 and 313. BAI Communications.

Design and development

The first glider in the series was the single seat Mini Straton D-7, which was designed in 1988 and first shown in the

United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...

AirVenture EAA AirVenture Oshkosh (formerly the EAA Annual Convention and Fly-In), or just Oshkosh, is an annual air show and gathering of aviation enthusiasts held each summer at the Wittman Regional Airport and adjacent Pioneer Airport in Oshkosh, Wiscon ...

in 1992. This was followed by the improved single seat Straton D-8 and the D-8 Moby Dick two seater. All aircraft in the series share the same unusual configuration. The aircraft are built around a predominantly

aluminium Aluminium (or aluminum in North American English) is a chemical element; it has chemical symbol, symbol Al and atomic number 13. It has a density lower than that of other common metals, about one-third that of steel. Aluminium has ...

frame, with use of

fibreglass Fiberglass (American English) or fibreglass ( Commonwealth English) is a common type of fiber-reinforced plastic using glass fiber. The fibers may be randomly arranged, flattened into a sheet called a chopped strand mat, or woven into glass c ...

and

aircraft fabric covering Aircraft fabric covering is a term used for both the material used and the process of covering aircraft open structures. It is also used for reinforcing closed plywood structures. The de Havilland Mosquito is an example of this technique, as are ...

. The Moby Dick model also incorporates wood in the structure. The

fuselage The fuselage (; from the French language, French ''fuselé'' "spindle-shaped") is an aircraft's main body section. It holds Aircrew, crew, passengers, or cargo. In single-engine aircraft, it will usually contain an Aircraft engine, engine as wel ...

is of conventional sailplane type in appearance, but the semi-tapered wing is suspended above the fuselage on

cabane struts In aeronautics, bracing comprises additional structural members which stiffen the functional airframe to give it rigidity and strength under load. Bracing may be applied both internally and externally, and may take the form of struts, which act in ...

, supported by

lift strut In aeronautics, bracing comprises additional structural members which stiffen the functional airframe to give it rigidity and strength under load. Bracing may be applied both internally and externally, and may take the form of struts, which act in ...

s, with the pusher engine mounted at the rear of the wing. The Straton D-8 has a monowheel landing gear, while the Moby Dick has two closely spaced, fuselage-mounted wheels. All models have optional outrigger

wing tip A wing tip (or wingtip) is the part of the wing that is most distant from the fuselage of a fixed-wing aircraft. Because the wing tip shape influences the size and drag of the wingtip vortices, tip design has produced a diversity of sha ...

wheels.

Variants

;Mini Straton D-7 :Single seat original model ;Straton D-8 :Improved single seat model with a wingspan. developed for the American market. It incorporates many improvements in both construction and performance and can be powered with

Trabant Trabant () is a series of B-segment, small cars produced from 1957 until 1991 by former East Germany, East German car manufacturer HQM Sachsenring GmbH, VEB Sachsenring Automobilwerke Zwickau. Four models were made: the Trabant P 50, Trabant 50 ...

Rotax Rotax is the brand name for a range of internal combustion engines developed and manufactured by the Austrian company BRP-Rotax GmbH & Co KG (until 2016 BRP-Powertrain GmbH & Co. KG), in turn owned by the Canadian Bombardier Recreational Prod ...

engines. There were 118 reported flying in 1998. ;D-8 Moby Dick :Two seat development of the Straton D-8, with a wingspan, wing area, empty weight , gross weight , stressed to +4/-2 g. Standard engine is the

Rotax 447 The Rotax 447 is a , inline 2-cylinder, two-stroke aircraft engine, built by BRP-Rotax GmbH & Co. KG of Austria for use in ultralight aircraft.Raisner, William: ''LEAF catalog'', pages 6-105. Leading Edge Airfoils, 1995. Design and developme ...

two stroke A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes of the piston, one up and one down, in one revolution of the crankshaft in contrast to a four-stroke engine which re ...

aircraft engine. It was reported that 37 were flying in 1998.

Specifications (Straton D-8)

References

External links

*
Photo of a D-8 Moby DickPhoto of Straton D-8
{{ProFe aircraft 1980s Czechoslovak sailplanes Homebuilt aircraft Motor gliders Parasol-wing aircraft Single-engined pusher aircraft

Moby Dick ''Moby-Dick; or, The Whale'' is an 1851 Epic (genre), epic novel by American writer Herman Melville. The book is centered on the sailor Ishmael (Moby-Dick), Ishmael's narrative of the maniacal quest of Captain Ahab, Ahab, captain of the whaler ...

Design and development

Variants

Specifications (Straton D-8)

See also

References

External links