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Corby CJ-1 Starlet

 

corbystarlet


The Starlet was designed by Australian aero engineer John Corby of Sydney, N.S.W, Australia, for a competition held by English company Rollason Aircraft Ltd in 1964. The design was placed eighth, although it became first from the competition to be built. The prototype (VH-CBS) first flew on August 9th, 1967.
The Corby Starlet is a semi-aerobatic sports aircraft made of an all-wood onstruction.
The fuselage is a combination of spruce longerons and frames and is sheeted with plywood.  The wing is a single-piece structure, consisting of a solid laminated spar and built-up ribs. The remainder of the wing, including the ailerons, is open-structure and fabric covered. The D-nose leading edge is plywood covered. The main undercarriage consists of  spring-steel legs bolted to a stiffened frame in the fuselage, immediately behind the firewall. An 8 Imp. gallon fuel tank is located in the fuselage, immediately behind the firewall.
Powered usually by a VW conversion, the Starlet will take any suitable engine up to 75 hp and 72 kg (160 lb) in weight, and is aerobatic with limitations of +4.8 and -1.8G. Fuel consumption in the Starlet is between 10 and 14 litres per hour, depending on the power settings used, with an economic cruise of 110 knots. The Starlet can carry 15 lbs in a locker behind the seat, still normally within centre of gravity limits. Extra freight in most single seat homebuilts is usually either worn or sat upon to keep the C of G in the same place. Economic cruise is around 85 knots. At almost full throttle (3400 revs) the aircraft will approach VNE (138kts). The stall in a glide came at 35 knots.
Some Starlets have been outfitted with 2180's (75-80 hp) and these cruise at VNE (185) and climb at 1900 fpm.

Corby CJ-1 Starlet
Engine: VW or Jabiru
Horsepower: VW 45 - 75 hp Jabiru 80 hp
Propeller: Wood 54 inch
Overall Length: 15.1 ft (4.6 m)
Height: 4.8 ft (1.46 m)
Wingspan: 18.5 ft (5.63 m)
Wing Area: 68.5 sq ft (6.36 sq m)
Wing Loading: 10.9 lbs/sq ft (4.9 kg/sq m)
Cabin Width: 21.75 inch (.55 m)
Empty Weight: 450 lbs (203.6 kg)
Gross Weight: 750 lbs (339.4 kg)
Useful Load: 300 lbs (135.7 kg)
Fuel Capacity: 11.1 gal (42 l)
Maximum Speed: 139 kts @ sea level
Cruise Speed: 113 kts
Stall (or Min.) Speed:@ gross weight 30 kts
Service Ceiling: 14,500 ft (4419 m)
Takeoff Distance: 350 ft (106 m)
Landing Distance: 450 ft (137 m)
Rate of Climb (gross): 1000 fpm
Maximum Range: 425 nm
"G" Loading: +4.5g (+6.75g ultimate), -4.5g
Landing Gear: FG (Tailwheel)
Seats: 1

Corby Starlet

Engine: VW conversion, 70 hp
Engine range: 160 lbs or less 75 hp
Fuselage Length: 14 ft 9 in
Height: 4 ft 10 in
Width: 21.75 in
Span: 18 ft 6 in
Wing Area 68.5 sq.ft
Wing loading 10.2 lb/sq.ft
Power loading 11.6 lbs per hp
Empty Weight 450 - 500 lbs
Gross weight one piece wing: 750 lbs
Gross weight two piece wing: 650 lbs
Takeoff distance 350 ft
Landing distance 450 ft
Fuel capacity 11 gals US/ 9.7 Imp. Gals/44 lbs/20 kg
Stall (power off) 35 mph
Top speed (level) 160 mph
Normal Cruise 115-130 mph
Fuel burn Cruise 3.5 gph US / 21 lbs per hr
VNE (Mph) 159 (tested to 185)
Rate of Climb 850 fpm
Range 425 sm
Servive ceiling: 14,500 ft
Roll Rate 270 dps (approx.)
Take-off dist 50 ft: 1200 ft
Landing dist 50 ft: 1200 ft
Design Load +/- 4.5 proof (+/- 6.75 ultimate) Utility or Semi Aerobatic
MAC 45 in
Incidence 2.5 deg – 1 deg Tip
Airfoil: NACA 43012A
Aileron Deflection +15 deg – 15 deg
Horizontal tailplane
Span: 6 ft 6 in
Area: 13.75 sq. ft.
Elevator deflection +30 deg - -20 deg
Vertical Tailplane
Area: 7.4 sq. ft.
Rudder Deflection +/- 25 deg
Horsepower range: 30 to 60
Engine Weight 130-160 lbs
C.G. Range: 20 - 25% MAC or 8.7 in to 11.4 in" aft of Wing LE
Number of Seats:
One Building Time: 1400+

Engine: Agusta, 42 h.p.
Span: 18’ 6”.
Length: 14’ 9”.
Wing Area: 68.5 sq. ft.
Empty Weight: 400 lb.
Loaded Weight (semi-aerobatic): 650 lb.
Wing Loading: 9.2 lb/sq. ft.
Max. Speed: 115 mph.
Cruise Speed: 104 mph.

Engine: VW, 60 hp.
Vne: 160 mph.
Cruise: 130 mph.
Range: 425 sm.
Stall: 35 mph.
ROC: 1000 fpm.
Take-off dist: 350 ft.
Landing dist: 450 ft.
Service ceiling: 14,500 ft.
Fuel cap: 11 USG.
Weight empty: 450 lbs.
Gross: 750 lbs.
Height: 4.8 ft.
Length: 15.1 ft.
Wing span: 18.5 ft.
Wing area: 68.5 sq.ft.
Seats: 1.
Landing gear: tail wheel.

 


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