THE GUEPARD AND THE GUEPY :
These devices are designed according to the classic pattern: high wings, front engine, tricycle or classic landing gear.
Installation on a Guépard of a Rotax 912 S engine
supported by 4 silent-blocks mounted at 45°
The cabin is the main advantage of these devices, it is one of the most spacious on the market today.
|Large glass surfaces give perfect visibility to the front, sides, rear and top.
Two compartments for luggage placed under the seats (swivelling forward), a big space behind the latter, a very large instrument panel with a 45 cm deep dashboard for maps.
As an optional extra, the interior can be padded and soundproofed. Seat padding is also optional (fabrics match the colours of the device).
The instrumentation is aviation-type (Ø 80), highly visible and accessible.
The controls are dual (rudder bars) and mounted on rolling bearings, with aileron differentials, multiposition flap control. However be careful, there is just one control stick and no flaps in the Guépy.
The seat belts are three-point belts with a shoulder harness.
The fuselage structure is made up of chromemolybdenum steel tubes (American 4130 and French 25 cd 4s). They are welded together using the argon tungsten process.
A protective coating is applied before the covering process (phosphate primer and polyurethane paint).
All resistance calculations were performed with the very powerful RDM software and they demonstrate use limitations at + 6 G and - 3 G at the maximum load of 472.5 kg (with the parachute option).
These calculations were checked by static tests (see tests web page). This welded cage offers great passive protection in case of crash.
Welded truss structure made of chromemolybdenum steel – air standard (argon TIG welding)
Polyurethane protective coating before covering process
The airframe’s front part is covered with two composite half-shells for a better finish and make eventual removal easier. These composite parts are also used to support the windshield glass and the cowls.
The tail cone as well as stabilizers are covered with a dacron 1 500 kg cloth.
Wings: airplane-type version (on the Guépard only)
The ribs in aluminium 2017 t3 are stamped on 5/10 and 6/10 plates and have lightening holes.
The I- beam section spar is in aluminium 2024 t4 16/10. There are stiffening pieces at the wing root section and at the attachment point of the struts which strengthen it.
The leading edge is sheeted with a glued and riveted 6/10 plate, forming a box that will keep its shape. Ailerons and flaps are manufactured in the same way.
Aluminium wings manufactured in an aeronautical workshop
The advantage of this wing is its aviation-type finish and its great rigidity, which give the Guépard great piloting comfort and stability.
The covering is made of dacron 1 500 kg fabric : thermoshrinkable, anti-UV treated, finishing with aircraft-type paint.
Two composite wing tips are at the very extremity of each wing. The streamlined struts reinforce the airfoil.
This wing is manufactured by the RUMEAU firm of Toulouse (www.rumeau.com), an aerospace industry subcontractor.
Wings: ultralight-type version (Guépard and Guépy)
A large-diameter leading edge tube in aluminium 2017 t3 with jacketing at the attachment point of the struts, aviation industry standard.
A trailing edge tube in aluminium 2017 t3 with jacketing at the attachment point of the struts, with a smaller diameter.
Compression and drag tubes join up the two previous ones.
Ribs in 2 024 aviation aluminium are riveted between the LE and the TE to give the rectangular wing its profile. A composite leading edge slat is glued on the ribs.
For trapezoidal wings, ribs are in plywood.
A rectangular wing structure in tubes and cloth (Guépard and Guépy)
Ailerons and flaps are made up of aluminium tubing.
The whole is covered with a dacron 1 500 kg cover cloth : thermoshrinkable, anti-UV treated, finishing with aviation-type paint.
Two small composite wing tips are at the end of the wings.
The advantage of this wing is its value for money, its design which makes kit construction possible, and its flexibility in turbulent conditions.
Aluminium, which has an excellent weight/solidity ratio, is easy to work and repair. It is easy to machine and store.
The trapezoidal wing, on top of its new look, makes possible a better roll rate and a greater stability.
The flaps and ailerons are separated surfaces.
THE GUEPY CLUB
The front airframe is made of 4130 steel tubing and is welded as with the Guépy. The difference resides in the fact that the tail cone is made of aluminium 2017 tubing (Ø 40mm), and the stabilizers from aluminium 2017 tubing, Ø 40 and 20.
The whole is covered with a Diatex coated and painted dacron 1500 kg cover.
The wing is made of aluminium tubing as with the Guépy, with aluminium stamped ribs for the rectangular wing, or plywood ribs for the trapezoidal wing.
Dacron covering on Guépy Club
The advantage of this construction is its low cost. About 100 to 120 hours are needed to assemble it.