__NOTOC__ The Weybridge Man Powered Aircraft (also known as ''Dumbo'' and later ''Mercury'') is a British single-seat man-powered aircraft built and flown by members of the Weybridge Man Powered Aircraft Group.

Development

The Weybridge Man Powered Aircraft Group was formed in late 1967 with members drawn from the

British Aircraft Corporation The British Aircraft Corporation (BAC) was a British aircraft manufacturer formed from the government-pressured merger of English Electric Aviation Ltd., Vickers-Armstrongs (Aircraft), the Bristol Aeroplane Company and Hunting Aircraft in 1 ...

factory and the local chapter of the

Royal Aeronautical Society The Royal Aeronautical Society, also known as the RAeS, is a British multi-disciplinary professional institution dedicated to the global aerospace community. Founded in 1866, it is the oldest aeronautical society in the world. Members, Fellows ...

. Construction started in 1968 and the aircraft was assembled at

Wisley __NOTOC__ Wisley is a village and civil parish in Surrey, England between Cobham and Woking, in the Borough of Guildford. It is the home of the Royal Horticultural Society's Wisley Garden. The River Wey runs through the village and Ockham and ...

and flown for the first time from

Weybridge Weybridge () is a town in the Borough of Elmbridge in Surrey, England, around southwest of central London. The settlement is recorded as ''Waigebrugge'' and ''Weibrugge'' in the 7th century and the name derives from a crossing point of the ...

on 18 September 1971. The Weybridge MPA (which was named ''Dumbo'') was flown by Christopher Lovell for a distance of 46 metres with a height reached of 3 ft (0.9m). Only two flights were made at Weybridge and the aircraft was passed to another group at

RAF Cranwell Royal Air Force Cranwell or more simply RAF Cranwell is a Royal Air Force station in Lincolnshire, England, close to the village of Cranwell, near Sleaford. Among other functions, it is home to the Royal Air Force College (RAFC), which trai ...

who renamed it ''Mercury''.

Design

The aircraft is a low-wing cantilever

monoplane 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 ...

with a

fuselage The fuselage (; from the French ''fuselé'' "spindle-shaped") is an aircraft's main body section. It holds crew, passengers, or cargo. In single-engine aircraft, it will usually contain an engine as well, although in some amphibious aircraft t ...

made from

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 ...

alloy tubing with

balsa ''Ochroma pyramidale'', commonly known as the balsa tree, is a large, fast-growing tree native to the Americas. It is the sole member of the genus ''Ochroma''. The tree is famous for its wide usage in woodworking, with the name ''balsa'' being ...

frames and covered with

Melinex Polyethylene terephthalate (or poly(ethylene terephthalate), PET, PETE, or the obsolete PETP or PET-P), is the most common thermoplastic polymer resin of the polyester family and is used in fibres for clothing, containers for liquids and foods, ...

. The wing has a single warren-girder main spar of aluminium alloy tubing with balsa ribs and, like the fuselage, covered with Melinex. The landing gear was a non-retractable

tandem Tandem, or in tandem, is an arrangement in which a team of machines, animals or people are lined up one behind another, all facing in the same direction. The original use of the term in English was in ''tandem harness'', which is used for two ...

arrangement using

bicycle wheel A bicycle wheel is a wheel, most commonly a wire wheel, designed for a bicycle. A pair is often called a wheelset, especially in the context of ready built "off the shelf" performance-oriented wheels. Bicycle wheels are typically designed ...

s. The power is generated by the pilot in an enclosed

cockpit A cockpit or flight deck is the area, usually near the front of an aircraft or spacecraft, from which a Pilot in command, pilot controls the aircraft. The cockpit of an aircraft contains flight instruments on an instrument panel, and the ...

using bicycle pedals driving a two-bladed balsa

pusher propeller In an aircraft with a pusher configuration (as opposed to a tractor configuration), the propeller(s) are mounted behind their respective engine(s). Since a pusher propeller is mounted behind the engine, the drive shaft is in compression in nor ...

Specifications

External links

British Pathé - partial success in man-powered flight
- video of the Weybridge MPA

References

Notes

Bibliography

* {{refend Aircraft first flown in 1971 1970s British experimental aircraft Human-powered aircraft Single-engined pusher aircraft Low-wing aircraft