The Hornet is a tailless flying wing of composite construction and powered by a Konig driven ducted fan mounted behind the enclosed cockpit. The aircraft sits on a reverse tricycle undercarriage to enhance its rough strip capabilities. The large wing folds back either side of the fuselage to facilitate storage and trailering.

Engine: Konig 3-cyl
Prop: ducted fan
Wing span: 7.9 m
Wing area: 10 sq m
Length: 3m
Weight: 114kg
Cruise speed: 85 kt
Stall: 30 kt

Single seat single engined high wing monoplane with conventional three axis control. Wing has swept back leading and trailing edges, and constant chord; cruciform tail. Pitch control by elevator on tail; yaw control by fin mounted rudder; roll control by fullspan ailerons; control inputs through stick for pitch/roll and pedals for yaw. Wing braced from above by kingpost and cables, from below by cables and struts; wing profile Clark Y; double surface. Undercarriage has three wheels in tricycle formation with additional tailskid; rubber suspension on nosewheel and steel spring suspension on main wheels. Push-right go right nosewheel steering connected to yaw control. Optional brakes on main wheels. Aluminium tube framework, partially enclosed. Engine mounted above wing driving tractor propeller.
The PX2000 design studies began in December 1982 following an idea of Patrick Lemonnier. The construction of the prototype was begun in February 1983 and it made its first flight on the 3 April. Its test programme included as much static testing as flight testing, static tests being entrusted to Ingenerie Technique Atlantique (ITA), a specialist aeronautical and marine laboratory.
By 1982 the single seater had already largely confirmed the calculated performance figures. The figures quoted below correspond to the prototype which is fitted with a Fuji Robin EC44 2PM, hand started and developing 43 hp. It was tested without the glass fibre pod with polycarbonate windscreen, and the three wheel fairings which will be fitted to the production models.

Engine: Robin EC442PM, 53 hp at 6750 rpm
Prop¬eller diameter 65 inch, 1.64m
Toothed belt reduction, ratio 2.5/1
Max static thrust 309 lb, 140 kg
Power per unit, area 0.39hp/sq.ft, 4.2 hp/sq.m
Fuel capacity 1.8 US gal, 6.6 Imp gal, 30.0 litre
Length overall 17.5 ft, 5. 30 m
Height overall 7.9ft, 2.40m
Wing span 29.9ft, 9.10m
Chord at root 4.3ft, 1.29 m
Chord at tip 2.7ft, 0.82m
Dihedral 2 deg
Sweepback 5 deg
Tailplane span 8.7 ft, 2.61 m
Fin height 3.9 ft, 1.20 m
Total wing area 136 sq.ft, 12.6 sq.m
Total aileron area 31.5 sq.ft, 2.92 sq.m
Fin area 9.1 sq.ft, 0.85 sq.m
Rudder area 7.5 sq.ft, 0.70 sq.m
Tail¬plane area 12.7sq.ft, 1.18 sq.m
Total elevator area 10.3 sq.ft, 0.96 sq.m
Wing aspect ratio 6.59/1
Wheel track 4.7 ft, 1.40 m
Wheelbase 4.7 ft, 1.40 m
Nosewheel diameter overall 10 inch, 25 cm
Main wheels diameter overall 12 inch, 30cm
Empty weight 3091b, 140kg
Max take off weight 574 lb, 260kg
Payload 265 lb, 120kg
Max wing loading 4.24 lb/sq.ft, 20.7 kg/sq.m
Max power loading 10.83 lb/hp, 4.9kg/hp
Load factors; +6.0, 4.0 ultimate
Max level speed 87mph, 140kph
Never exceed speed 106mph, 170kph
Max cruising speed 81mph, 130kph
Economic cruising speed 65mph, 105kph
Stalling speed 22mph, 35kph
Max climb rate at sea level 1000ft/min, 5.1m/s
Min sink rate 400fpm at 34 mph, 2.0 m/s at 55 kph
Best glide ratio with power off 10/1 at 37mph, 60kph
Take off distance 115 ft, 35 m
Landing distance 131 ft, 40 m
Service ceiling 10,000 ft, 3050 m
Range at average cruising speed 218 mile, 350km

Side by side two seat single engined high¬wing monoplane with conventional three axis control. Wing has swept back leading edge, swept forward trailing edge and tapering chord; cruciform tail. Pitch control by elevator on tail; yaw control by fully flying rudder; roll control by ailerons; control inputs through stick for pitch/roll and pedals for yaw. Wing braced from above by kingpost and cables, from below by struts; wing profile double surface. Undercarriage has three wheels in tricycle formation; no suspension on any wheels. Push right go right nosewheel steering connected to yaw control. No brakes. Aluminium tube framework, with optional pod. Engine mounted above wing driving tractor propeller.
A Patrick Lemonnier design, the Patrilor 3 two seater was assembled without any prior engineering drawings, in his automotive repair and panel beating shop.
Prototype 01 made its first flight at the end of May 1982 and was shown at the end of July at the Brienne amateur constructors’ convention. Number 02 then appeared but prematurely terminated its career with a dicey landing and was followed by a number 03, which successfully completed the first London to Paris in the hands of Jacques Toulorge.
Production models have been on sale since November 1982 and have met with exception¬al success. The company, in April 1983, added to this strut braced machine a kingpost and landing wires, which give increased structural integrity and which have the secondary effect of improving aileron efficiency by stiffening the wing. This machine is therefore now one of those rare aircraft which use two struts in a V to support each wing plus wires stiffening it from above.
In standard form the Patrilor 3 is delivered built and tested by the manufacturer. It is deriggable by one person in 20 min and trailer transportable. The folded dimensions are 21.8 x 6.2 x 8. 0 ft (6.60 x 1. 88 x 2.45 m). Options include a fairing for the forward part of the framework (made of transparent polycarbonate), dual controls, carburettor heat kit, plus an instrument panel with basic instruments. Additionally, the standard Hirth engine can be replaced by the Robin EC44 2PM of 53 hp. Planned is a second model, the Patrilor 3bis with flaps, and a crop spraying version named Agrilor. For North America, Patrilors are delivered as kits and the 40 h building time is the responsibility of the dealer.

Engine: Hirth 2701R, 43 hp at 6750 rprn
Propeller diameter 56 inch, 1.42 m
Toothed belt reduction, ratio 2.5/1
Max static thrust 254 lb, 115 kg
Power per unit area 0.18hp/sq.ft, 2.0hp/sq.m
Fuel capacity 8.5 US gal, 7.0 Imp gal, 32.0 litre
Length overall 19.4 ft, 5.90 m
Height overall 8.0ft, 2.45m
Wing span 38.7ft, 11.75m
Chord at root 5.5ft, 1.64m
Chord at tip 3.5ft, 1.05m
Dihedral 3 deg
Sweepback 8deg
Tailplane span 11.1 ft, 3.38 m
Total wing area 233 sq.ft, 21.6 sq.m
Total aileron area 17.2 sq.ft, 1.60 sq.m
Rudder area 8.2 sq.ft, 0.76 sq.m
Tail¬plane area 17.2 sq.ft, 1.60sq.m
Total elevator area 11.8sq.ft, 1.10 sq.m
Wing aspect ratio 6.4/1
Wheel track 5.6ft, 1.72m
Wheelbase 6.2ft, 1.88m
Tailwheel diameter overall 10 inch, 25 cm
Main wheels diameter overall 16 inch, 40 cm
Empty weight 320 lb, 145 kg
Max take off weight 707 lb, 320 kg
Payload 387 lb, 175 kg
Max wing loading 3.03 lb/sq.ft, 14.8 kg/sq.m
Max power loading 16.4 lb/hp, 7.4 kg/hp
Load factors; +4.5, 3.8 ultimate
Max level speed 56 mph, 90 kph
Never exceed speed 68 mph, 110 kph
Max cruising speed 50 mph, 80 kph
Economic cruising speed 43mph, 70kph
Stalling speed 22 mph, 35 kph
Max climb rate at sea level 500 ft/min, 2.5 m/s
Min sink rate 600 fpm @ 24 mph, 3.0 m/s @ 40 kph
Best glide ratio with power off 8/1 at 37 mph, 60 kph
Take off distance 115 ft, 35 m
Land¬ing distance 115 ft, 35 m
Service ceiling 10,000ft, 3050 m
Range at average cruising speed 125 mile, 200 km