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AILE sa Patrilor 3


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 eleva-tor 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 assem-bled 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' conven-tion. Number 02 then appeared but pre-maturely terminated its career with a dicey landing and was followed by a number 03, which successfully completed the first Lon-don 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



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