1 engine

Corcoran 65-1

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The 65-1 was designed and built by R. S Corcoran, an experienced sailplane pilot who was also the president of a company bearing his name which manufactured centrifugal pumps and other products. The 65-1 single-seater first flew in prototype form in October 1965, the powerplants being two 8hp West Bend 820 single-cylinder go-kart engines mounted on small booms extending from aft of the cockpit, and driving two-blade fixed-pitch pusher propellers. Construction is all-metal, the single-spar wings having aluminium skinning and unbalanced piano-hinged ailerons; the upper wing has flaps along 60% of its span which can be lowered to four positions, the maximum deflection being 35°. There is a single interplane strut and bracing strut on each side. The slab-sided fuselage is built up from aluminium extrusions and is also covered with aluminium; the landing gear consists of a monowheel mounted in an under-fuselage fairing, a steerable tailwheel and two small outrigger balancing wheels under the lower wings below the interplane struts – these are actually Sears ballbearing lawnmower wheels. The pilot sits under a single-framed cockpit canopy that hinges to port for entry and exit. The prototype 65-1 had a wing area of 100sq ft and was followed by a second prototype with a wing area increased to 180sq ft and two engines mounted inboard in the fuselage and driving belt-driven propellers mounted on outriggers.

First Prototype
Span: 26 ft 0 in
Length: 18 ft 6 in
Height: 5 ft 0 in
Wing area: 100 sqft
Aspect ratio: 13.0
Empty weight: 364 lb
Max weight: 550 lb
Max speed: l00 mph (power on)
Cruising speed: 67 mph
Take-off run: 500 ft
Range: 140 miles

Corby CM-2

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Two prototypes of a metal development of the Starlet designated at this stage as the CM-2 were being built in New Zealand. The aircraft is sufficiently close to Starlet to provide high confidence in performance and flight characteristics, but provides some features to builders who may prefer building in metal. Cockpit width, range, AUW, and aerobatic [6 Gs] have been increased, and recommended power is 60 to 90 HP. The CM-2 should be an impressive cross country machine, with excellent aerobatic capability.
Discussions with Jabaru on their higher powered engine suggest this combination with the CM-2 has great potential and they would be interested in cooperating on the project. The CM-2 is planned to be available in kit form and will have a high degree of parts commonality with the CJ-3 two seater which is underway but not yet ready for building.

Corby CM-2
Estimated Performance: 75hp
Maximum speed: 145kt
Maximum cruise: 130kt
Economy cruise: 120kt
Max rate climb: 1250fpm (330kg/725lbs)
Wing span: 5640mm – 18’6″
Wing Area: 6.55sq.m – 70sqr ft
Length: 4725mm – 15’8″
Fuselage width: 610mm – 24″
Overall height: 1525mm – 5′
Tailplane span: 1980mm – 6’6″
Powerplant: 60-90hp -66-77kgmax
Empty weight: 227kg – 500lbs
Pilot – Baggage: 90kg – 200lbs
Fuel: 60lt-13gals 43kgs- 95lbs
Oil: 2kgs – 5lbs
Total weight Aerobatic: 340kg-750lbs
Total weight x country: 363kg – 800lbs
Stress Factors: (+6,-3)G
Fully aerobatical: 340kg-750lbs

Corby CM-2
Estimated Performances: 85hp
Maximum speed: 148kt
Maximum cruise: 134kt
Economy cruise: 125kt
Max rate climb: 1400fpm (330kg/725lbs)
Wing span: 5640mm – 18’6″
Wing Area: 6.55sqrm – 70sqr ft
Length: 4725mm – 15’8″
Fuselage width: 610mm – 24″
Overall height: 1525mm – 5′
Tailplane span: 1980mm – 6’6″
Powerplant: 60-90hp -66-77kgmax
Empty weight: 227kg – 500lbs
Pilot – Baggage: 90kg – 200lbs
Fuel: 60 lt-13gals 43kgs- 95lbs
Oil: 2kgs – 5lbs
Total weight Aerobatic: 340kg-750lbs
Total weight x country: 363kg – 800lbs
Stress Factors: (+6,-3)G
Fully aerobatical: 340kg-750lbs

Corby CJ-1 Starlet

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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.

Gallery

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.

Corben Super Ace

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Pober Super Ace

The Super Ace is constructed of basic materials, 4130 steel tubing for the fuselage, tail group, landing gear, fittings and wing struts. The wings are spruce spars and the wing ribs of spruce cap strips. The complete aircraft is covered with the PolyFiber covering materials. The wheels are 600×6 with hydraulic toe brakes. The control system is cable operated. The Prototype Super Ace is powered by a Continental C-85-8 engine of 85 hp. It does not have a starter or an electrical system. Power plants of up to 150 hp can be used; however, weight and balance considerations must be given to maintain the same engine and cowling lines and to keep the airplane’s proportions. The continental engine swings a Sensenich prop, which give a cruise speed of some 90 mph. The stall characteristics are gentle and straight forward. The coil springs mounted in tubes provide a soft landing and the wide landing gear adds to the ease of ground handling and a reasonable crosswind landing.
One of the many designs to come from the drawing board of EAA’s founding President, Paul H. Poberezny, the Super Ace, is an ideal project for first time builders. It offers the excitement of open cockpit flying and excellent performance. With options for 85 hp to 150 hp, the Super Ace can meet a wide range of desires. The fuselage is a traditional 4130 steel tube frame that’s covered with Stits Poly-fiber. The two-piece wing is made of Sitka spruce spars, ribs formed with 1/2” x 1/2” spruce caps and covering is again Stits Poly-fiber. Wing span is 27’-3 1/2”, length is 18’5” and empty weight is 685 pounds with a useful load factor of 385 pounds. Using a C-85 on the prototype, cruise speed is 90 mph. Info packs on the Pober Super Ace were $8.00, plans were $125.00 in 2009.

Pober Super Ace
Engine: Continental C-85, 80 hp.
HP range: 85-150.
Speed max: 160 mph.
Cruise: 110 mph.
Range: 250 sm.
Stall: 44 mph.
ROC: 500 fpm.
Take-off dist: 350 ft.
Landing dist: 450 ft.
Service ceiling: 25,000 ft.
Fuel cap: 12 USG.
Weight empty: 685 lbs.
Gross: 1030 lbs.
Height: 6.6 ft.
Length: 18.42 ft.
Wing span: 27.3 ft.
Wing area: 118 sq.ft.
Seats: 1.
Landing gear: tail wheel.

Corben Junior Ace / Ace Aircraft Junior Ace

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The Junior Ace is lightweight, easy to build, fun to fly and requires minimal maintenance. It has been modified from the original Corben Baby Ace so that it can utilize aircraft engines. The fuselage has also been widened, the horizontal stabilizer was modified for easier construction and modern aircraft wheels and brakes are now called for. With nearly a 34 ft wingspan and Clark Y airfoil, the Pober Junior Ace, designed by EAA founding president Paul Poberezny, is docile in stall and landing patterns. Airframe is 4130 steel tubing, wings are all wood and the recommended powerplant is a Continental C-85. Empty weight of the Junior Ace is 750 pounds and gross capacity is 1,320 pounds.

Junior Ace E

The Pober Junior Ace made its first flight with Captain Bud Judy at the controls. This first flight was successful and displayed the short field capabilities as well as low stall speed – ideal for small airstrips. The drawings for the airplane have full size wing rib drawings and two types of ailerons – the Friess aileron being a bit more responsive and lighter on aileron control. The indicated stall speed with one person on board is approximately 36 mpg. Indicated cruise with the Continental C-85-8 was a little over 80 mph. The Pober Junior Ace is open cockpit. The fuselage is chromoly steel tube, the tail group is chromoly steel tube and flat sheet stock to form ribs. The landing gear is chromoly tube with coil spring shocks. Wings are spruce spars and ribs. Two place side by side.
The kit price in 2009 was US$20950.

Junior Ace E
Engine: 85hp.
Span: 26’5”.
Wing area: 112 sq.ft.
Length: 17’9”.
Max wt: 1150 lbs.
Empty wt: 640 lbs.
ROC: 500 fpm.
Cruise: 78 kts.
Seats: 2.

Pober Junior Ace
Engine: Continental C-85, 85 hp.
HP range: 85-125.
Speed max: 130 mph.
Cruise: 80 mph.
Range: 250 sm.
Stall: 38 mph.
ROC: 500 fpm.
Take-off dist: 350 ft.
Landing dist: 450 ft.
Service ceiling: 25,000 ft.
Fuel cap: 12 USG.
Weight empty: 750 lbs.
Gross: 1320 lbs.
Height: 7.33 ft.
Length: 20 ft.
Wing span: 34 ft.
Wing area: 168 sq.ft.
Seats: 2.
Landing gear: tail wheel.

Engine: Lycoming O-235.
Hp range: 65-125.
Wingspan: 26.5 ft.
Length: 17.9 ft.
Wing area: 110 sq.ft.
Empty wt: 700 lbs.
Mtow: 1320 lbs.
Fuel cap: 22 USG.
Cruise: 100 mph.
Stall: 44 mph.
Range: 410 sm.
Roc: 500 fpm.
To dist: 600 ft.
Ldg dist: 300 ft.
Cockpit width: 40 in.

Ace Aircraft Corben Junior Ace Model E
Engine: Continental, Lycoming
Horsepower: 85-120
Propeller: 2 blade metal or wood
Cabin Width: 30 or 36 inches (76 or 91 cm)
Gross Weight: 1320 lbs (600 kg)
Empty Weight: 700 lbs (345 kg)
Useful Load: 620 lbs (270 kg)
Fuel Capacity: 22 USG (83 l)
Wingspan: 26.5 ft (8 m)
Wing Area: 110 sq.ft (10.2 sq.m)
Wing Loading: 12 lbs/sq.ft (58.6 kg/sq.m)
Overall Length: 18 ft (5.49 m)
Maximum Speed VNE: 113 kt | 130 mph | 209 kmh @ sea level
Cruise Speed: 95 kts
Stall Speed(@ MTOW): 38 kt | 44 mph | 71 kmh
Service Ceiling: 10,500 ft (3,200 m)
Takeoff Distance: 600 ft (183 m)
Landing Distance: 300 ft (91.5 m)
Rate of Climb(gross): 500 fpm
Center Of Gravity Aft Limit: 18.36″
Center Of Gravity Forward Limit:11.88″
Empty Cg: 12.5″ To 13.5″
Incidence Angles: Reference: Upper Longeron
Horiz. Stab: 0.0 Degrees
Wing: +1.18 Degrees
Engine: 0.0 Degrees Vert./Hor.
Vertical Fin: 0.0 Deg. (Fuse C/L)
Control Surface Travel Ailerons: 20 Deg. Up/Dn
Elevator: 32 Deg. Up/Dn
Rudder: 27 Deg. L/R
Center Of Gravity Aft Limit=18.36″
Forward Limit=11.88″
Empty Cg= 12.5″ To 13.5″
Incidence Angles: Reference= Upper Longeron
Horiz. Stab.= 0.0 Degrees
Wing= +1.18 Degrees
Engine= 0.0 Degrees Vert./Hor.
Vertical Fin= 0.0 Deg. (Fuse C/L)
Control Surface Travel Ailerons: 20 Deg. Up/Dn
Elevator: 32 Deg. Up/Dn
Rudder: 27 Deg. L/R
Landing Gear: FG (tailwheel or trike)
Seats: 2 Side-by-Side

Acro SportInc Pober Junior Ace
Engine: Continental C-85, 85 hp
HP range: 85-125 hp
Top speed: 130 mph
Cruise: 80 mph
Stall: 38 mph
Range: 250 nm
Rate of climb: 500 fpm
Takeoff dist: 350 ft
Landing dist: 450 ft
Service ceiling: 25,000 ft
Fuel capacity: 12 USG
Empty weight: 750 lb
Gross weight: 1313 lb
Height: 7.3 ft
Length: 20 ft
Wing span: 34 ft
Wing area: 168 sq.ft
Seats: 2
Undercarriage: tailwheel

Corben Baby Ace / Ace Aircraft Baby Ace

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The Corben Baby Ace of 1929 was a professional design based on the Heath Parasol, but was a little more comfortable and had much better performance because of higher power. A 40-hp French Salmson AD-9 was used. Only six were factory-built, and a few were built from magazine plans in the 1930s.

The original Corben Baby Ace first flew back in 1931.

A single seat, high wing, sport plane powered by a modified Ford Model A 4 cyl inline engine. A simple and conventional design of open cockpit, strut-braced wing and tailplane, and a fixed, strutted, undercarriage. Later up-dated and marketed as the Pober Super Ace.

In 1954, Paul Poberenzy, who a year earlier had founded the still fledgling Experimental Aircraft Association, built a Baby Ace aircraft as a three part series in Mechanix Illustrated. The success of the articles caused an explosion in the homebuilt movement. The Baby Ace that Mr. Poberenzy built for Mechanix Illustrated is now in the EAA AirVenture Museum.

Corben Baby Ace D

The Baby Ace was extensively redesigned in 1955 as an ultralight monoplane specially designed for the amateur builder, the Baby Ace Model D. Baby Aces usually carry Continental engines rated from 65 to 85 hp and their performance is considered excellent by owners. Construction consists of a steel tube fuselage, all-wood wings and fabric covering. The wing is Clark Y mod from the root to the tip.

The Model C was refined by Ed Jacobs as the Model D. This first flew, as the DuCharme/EAA Baby Ace, on 16 November 1956.

In 1961 Ace Aircraft Mfg Co (Edwin T Jacobs), McFarland WI, purchased Baby Ace rights from Cliff DuCharme, West Bend WI.

Plans offered in 1968 for single-place Baby Ace ($28.50) and two-place Junior Ace, or Model E ($36.50). The kit price in 2009 was US$18950.

Gallery

Variation:
Dunn D-1

Specifications:

Engine: Szekley, 40 hp
Wingspan: 28 ft 8 in
Length: 17 ft 5 in
Height: 6 ft 0 in
Speed: 85 mph
Seats: 1

Baby Ace Model D
Engine: Continental C-65, 65 hp.
Hp range: 65-120.
Gross Wt. 950 lb.
Empty Wt. 575 lb.
Fuel capacity 17 USG.
Wingspan 26 ft 5 in
Length: 17 ft 9in
Wing area: 112 sq.ft.
Top 110 mph.
Cruise 90-100 mph.
Stall 34-38 mph.
Climb rate 1200 fpm.
Takeoff run 200ft.
Landing roll 250 ft.
Range 350-400 sm
Cockpit width: 34 in.
Seats: 1.

Ace Aircraft Corben Baby Ace Model D
Engine: Continental, Lycoming
Horsepower: 65-100
Propeller: 2 blade metal or wood
Cabin Width: 24 inches (61 cm)
MTOW Weight: 950 lbs (430 kg)
Empty Weight: 575 lbs (260 kg)
Useful Load: 375 lbs (170 kg)
Fuel Capacity: 17 USG (64 lt)
Wingspan: 26.5 ft (8 m)
Wing Area: 110 sq.ft (10.2 sq.m)
Wing Loading: 8.6 lbs/sq.ft (42 kg/sq.m)
Overall Length: 17.9 ft (5.46 m)
Maximum Speed VNE: 96 kts | 110 mph | 177 kmh @ sea level
Cruise Speed: 87 kts | 100 mph | 161 kmh
Stall Speed(@ MTOW): 30 kts | 34 mph | 55 kmh
Service Ceiling: 10,500 ft (3,200 m)
Takeoff Distance: 300 ft (91.5 m)
Landing Distance: 250 ft (76 m)
Rate of Climb(gross): 1200 fpm | 6 m/s
Centre of Gravity Aft Limit: 18.36 in
Centre of Gravity Forward Limit: 11.88 in
Empty Cg: 12.5 in To 13.5 in
Incidence Angles: Reference: Upper Longeron
Horiz. Stab: 0.0 Degrees
Wing: +1.18 Degrees
Engine: 0.0 Degrees Vert./Hor.
Vertical Fin: 0.0 Deg. (Fuse C/L)
Control Surface Travel: Ailerons: 20 Deg. Up/Dn
Elevator: 32 Deg. Up/Dn
Rudder: 27 Deg. L/R
Landing Gear: FG (tailwheel or trike)
Seats: 1

Copetta El Burrito

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The first four airplanes constructed in Chile, were designed and built by the Copetta brothers. The first of them flew in 1911 and its name was “El Burrito” (young donkey). This airplane followed the lines of the Blériot IX in some way and was built in the necessity to fly after the irreparable destruction of their Voisin biplane, brought originally from France. Regardless of it being the first, “El Burrito” bore on its tail the inscription “Copetta 2”, since in those years it was common to put the name of the pilot and constructor; in this case Copetta and Copetta.