Doodle Bug | |
---|---|
Role | Powered hang glider |
National origin | United Kingdom |
Manufacturer | Flylight Airsports |
Introduction | 1999 |
Status | Production completed |
Unit cost | US$4000 (2000 price) |
The Flylight Doodle Bug is a British powered hang glider that was designed and produced by Flylight Airsports starting in 1999. [1] [2] [3] The aircraft is now out of production.
A foot-launched powered hang glider (FLPHG), also called powered harness, nanolight, or hangmotor, is a powered hang glider harness with a motor and propeller in pusher configuration. An ordinary hang glider is used for its wing and control frame, and the pilot can foot-launch from a hill or from flat ground, needing a length of about a football field to get airborne, or much less if there is an oncoming breeze and no obstacles.
The aircraft features a cable-braced hang glider-style high-wing, weight-shift controls, single-place accommodation in the seated position, foot-launching and landing and a single engine in pusher configuration. [1]
In a vehicle with a pusher configuration, the propeller(s) are mounted behind their respective engine(s). According to British aviation author Bill Gunston, a "pusher propeller" is one mounted behind the engine, so that the drive shaft is in compression.
The aircraft uses a standard hang glider wing, made from bolted-together aluminium tubing, with its single surface wing covered in Dacron sailcloth. The wing is supported by a single tube-type kingpost and uses an "A" frame control bar. The engine is a lightweight, two-stroke, single cylinder Radne Raket 120 of 14 hp (10 kW). The Doodle Bug differs from other powered hang gliders in that the pilot flies in the seated position. A cloth fairing behind the pilot streamlines drag and provides space for baggage stowage. The propeller is protected on the ground by two support legs that retract automatically when the pilot assumes the normal flying position, though pressure on the foot rest. Electric starting is optional. [1] [2] [3]
Aluminium or aluminum is a chemical element with symbol Al and atomic number 13. It is a silvery-white, soft, nonmagnetic and ductile metal in the boron group. By mass, aluminium makes up about 8% of the Earth's crust; it is the third most abundant element after oxygen and silicon and the most abundant metal in the crust, though it is less common in the mantle below. The chief ore of aluminium is bauxite. Aluminium metal is so chemically reactive that native specimens are rare and limited to extreme reducing environments. Instead, it is found combined in over 270 different minerals.
The Radne Raket 120 is a lightweight single cylinder, two-stroke aircraft engine used for powered hang gliders, paramotors and ultralight aircraft that is built by Radne Motor AB of Haninge, Sweden.
An aircraft fairing is a structure whose primary function is to produce a smooth outline and reduce drag.
Data from Cliche [1]
General characteristics
An aircraft engine is a component of the propulsion system for an aircraft that generates mechanical power. Aircraft engines are almost always either lightweight piston engines or gas turbines, except for small multicopter UAVs which are almost always electric aircraft.
Polyurethane is a polymer composed of organic units joined by carbamate (urethane) links. While most polyurethanes are thermosetting polymers that do not melt when heated, thermoplastic polyurethanes are also available.
The leading edge is the part of the wing that first contacts the air; alternatively it is the foremost edge of an airfoil section. The first is an aerodynamic definition, the second a structural one. As an example of the distinction, during a tailslide, from an aerodynamic point of view, the trailing edge becomes the leading edge and vice versa but from a structural point of view the leading edge remains unchanged.
Performance
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