Esnault-Pelterie REP.2

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REP.2
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The R.E.P. 2 in 1908
Role Experimental aircraftTemplate:Short description
National origin France
Manufacturer Robert Esnault-Pelterie
Designer Robert Esnault-Pelterie
First flight June 1908
Number built 1
Developed from Esnault-Pelterie REP.1

The Esnault-Pelterie REP.2 was an early experimental aircraft designed and built by Robert Esnault-Pelterie in France in 1908.[1] In its final form, the REP.2bis, it was the most successful of Esnault-Pelterie's early designs.[1]

Design

Like Esnault-Pelterie's previous REP.1, it was a high-wing monoplane with a short fuselage and an open cockpit for the pilot.[1] Power was provided by a piston engine in the nose[1][2] of Esnault-Pelterie's own design.[1] This engine turned a tractor-mounted propeller.[1][2] The undercarriage was unusual, consisting of a main monowheel and a tailwheel.[1][2] This bicycle arrangement was supplemented by large outrigger wheels mounted on the wingtips.[1][2] The trapezoidal wings had a marked anhedral,[1] and lateral control was achieved by wing-warping.[3] It was originally fitted with small elevators on the forward fuselage, but these were soon removed.[3]

The REP.2 differed from the REP.1 in having a large ventral balanced rudder.

Development

Tests with the REP.2 commenced in June 1908, and on 8 June a flight of Script error: No such module "convert". was made, reaching an altitude of 30 m (100 ft), setting a height and distance record for monoplanes.[4] As originally constructed, Esnault-Pelterie made several brief flights in it, but none longer than one or two minutes.[5]

The aircraft was then modified by the addition of a trapezoidal dorsal fin, to create the REP.2bis. In this form, piloted by M. Châteaux, it won the third Ae.C.F. prize for a flight of over 200 metres on 21 November 1908, with an officially observed flight of Script error: No such module "convert"..[6] It was then exhibited at the Paris Aero Salon in December 1908 and at the Aero Show at Olympia in London in 1909.[7] While on show, Esnault-Pelterie offered the aircraft for sale for £GBP 1,400 (about £GBP 142,000 in 2025), which aviation historian Kenneth Munson described as "optimistic".[3]

In May 1909, it made its longest flight, of Script error: No such module "convert".,[1][3][5][8] covering the distance in about seven minutes.[5]

It was entered for the Script error: No such module "Lang". ("Grand week of Aviation") in Reims in August 1909, but Esnault-Pelterie did not compete there owing to an injury to his hand.[7] Nevertheless, of four Esnault-Pelterie monoplanes fielded, it was the only one to make a flight[3] (and even then, only once.[5]) It carried the tail number 3.[5]

As the REP.2bis, it made twelve flights.[5]

Variants

File:R.E.P. 2.png
The R.E.P. 2 in 1909
  • REP.2: initial version of 1908
  • REP.2bis: improved version of 1909

Specifications (REP.2bis)

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Notes

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References

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  1. a b c d e f g h i j The Illustrated Encyclopedia of Aircraft 1983, p.1616
  2. a b c d Dumas 1909, p.56
  3. a b c d e Munson 1969, p.130
  4. "Experiences de M. R. Esnault-Pelterie" 1908, p.226
  5. a b c d e f Gibbs-Smith 1966, p.53
  6. "Le Monoplan R.E.P bis gagne le 3e Prix de 200 metres" 1908, p.479
  7. a b "Rheims Aero Meeting" 1909, p.504
  8. Dumas 1909, p.85

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Bibliography

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