# Guerpont Autoplum

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French ultralight aircraft

Autoplum General information Type Ultralight aircraft National origin France Manufacturer Roland Mangeard (plans) Designer Maurice Guerpont Status Plans available (2015)

The **Guerpont Autoplum** is a French [ultralight aircraft](/source/Ultralight_aircraft) that was designed by Maurice Guerpont. Plans are supplied by one of the first builders of the type, Roland Mangeard of [Pulnoy](/source/Pulnoy). The aircraft is supplied as plans only for [amateur construction](/source/Homebuilt_aircraft).[1][2]

## Design and development

The aircraft was designed to comply with the [Fédération Aéronautique Internationale](/source/F%C3%A9d%C3%A9ration_A%C3%A9ronautique_Internationale) microlight rules. It features a cantilever [low-wing](/source/Low-wing), a two-seats-in-[side-by-side configuration](/source/Side-by-side_configuration) enclosed cockpit under an [aircraft canopy](/source/Aircraft_canopy) with gull winged doors for access, fixed [conventional landing gear](/source/Conventional_landing_gear) and a single engine in [tractor configuration](/source/Tractor_configuration).[1][2]

The aircraft is made from wood, with its flying surfaces covered in [doped](/source/Aircraft_dope) [aircraft fabric](/source/Aircraft_fabric). The Autoplum's [tailplane](/source/Tailplane) is 50% the area of the main wing, which provides a wide [centre of gravity](/source/Center_of_gravity_of_an_aircraft) range and a high degree of pitch dampening. Its 8.60 m (28.2 ft) span wing, has an area of 17.50 m2 (188.4 sq ft). Earlier examples were fitted with a 51 hp (38 kW) [Rotax 462](/source/Rotax_462) [two-stroke](/source/Two-stroke) engine, with later ones using the 64 hp (48 kW) [Rotax 582](/source/Rotax_582) two-stroke powerplant or other engines.[1][2]

## Specifications (Autoplum)

*Data from* Bayerl and Tacke[1][2]

**General characteristics**

- **Crew:** one

- **Capacity:** one passenger

- **Wingspan:** 8.60 m (28 ft 3 in)

- **Wing area:** 17.50 m2 (188.4 sq ft)

- **Empty weight:** 230 kg (507 lb)

- **Gross weight:** 420 kg (926 lb)

- **Fuel capacity:** 50 litres (11 imp gal; 13 US gal)

- **Powerplant:** 1 × [Rotax 462](/source/Rotax_462) two cylinder, air-cooled, [two stroke](/source/Two_stroke) [aircraft engine](/source/Aircraft_engine), 39 kW (52 hp)

- **Propellers:** 2-bladed composite, ground adjustable

**Performance**

- **Maximum speed:** 150 km/h (93 mph, 81 kn)

- **Cruise speed:** 140 km/h (87 mph, 76 kn)

- **Stall speed:** 50 km/h (31 mph, 27 kn)

- **Rate of climb:** 4 m/s (790 ft/min)

- **Wing loading:** 24.0 kg/m2 (4.9 lb/sq ft)

## References

1. ^ [***a***](#cite_ref-WDLA11_1-0) [***b***](#cite_ref-WDLA11_1-1) [***c***](#cite_ref-WDLA11_1-2) [***d***](#cite_ref-WDLA11_1-3) Bayerl, Robby; Martin Berkemeier; et al: *World Directory of Leisure Aviation 2011-12*, page 57. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X

1. ^ [***a***](#cite_ref-WDLA15_2-0) [***b***](#cite_ref-WDLA15_2-1) [***c***](#cite_ref-WDLA15_2-2) [***d***](#cite_ref-WDLA15_2-3) Tacke, Willi; Marino Boric; et al: *World Directory of Light Aviation 2015-16*, page 60. Flying Pages Europe SARL, 2015. [ISSN](/source/ISSN_(identifier)) [1368-485X](https://search.worldcat.org/issn/1368-485X)

## External links

- [Photo of a Guerpont Autoplum](http://www.flying-directory.com/photos/big/10018fix1.jpg)

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Adapted from the Wikipedia article [Guerpont Autoplum](https://en.wikipedia.org/wiki/Guerpont_Autoplum) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Guerpont_Autoplum?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.