Formed 1954 as a specialist maintenance and modification contractor for Douglas B-26 Invader bombers, developing high-speed executive transport and heavily armed counterinsurgency versions. The On Mark Marketeer was a six/eight-seat corporate transport based on the B-26 airframe. The externally similar Marksman had a pressurized cabin. A B-26K Counter Invader was developed for the USAF’s Tactical Air Command.
The On Mark Com¬pany took in the surplus bombers at Van Nuys, California and turned them out with everything intact but the bomb bay doors and some of the military weapons control gear. They came to the customers in pressurized and unpressurized versions, and they were only for the select few. 45-60 were converted.
The Counter-Invader was a cleaned up, heavily armed version for the USAF’s Special Air Warfare Center.
Designed and built by Mr Onishi, a Japanese sailplane pilot, the OS-G3 single-seater is powered by six model aircraft engines, mounted three on each side of the nose on a strut braced boom in line with the front of the cockpit canopy; these engines are intended to overcome the need for winch-launching or aero tows. Each 10cc OS.60 two-stroke glowplug engine drives a 12in diameter two-bladed propeller and develops 1.7hp at 14,000rpm, or 1.275hp at a less noisy 8,000rpm, the six together producing a total of 10.2hp for take-off, or 7.65hp for cruising flight. This is just enough for an unaided take-off, the take-off run being about 500ft when the OS-G3 made its first flight early in 1977. This power output leaves a 3mph margin between the cruising speed of 24mph and the stalling speed. The payload was only 154lb.
The OS-G3 is a cantilever shoulder-wing design with a swept back fin and rudder and the tailplane mounted on top; the engine slipstream is in line with the wing leading edge. There are no flaps or air brakes, and the landing gear consists of a fixed monowheel, a fixed nosewheel and a tailskid. The pilot sits under a one-piece canopy, and has six throttle levers and six cut-out switches for the engines.
Span: 46 ft 3 in Length: 21 ft 3.5 in Height: 5 ft 2.5 in Wing area: 185 sqft Aspect ratio: 11.6 Empty weight: 143 lb Max gross weight: 297 1b Cruising speed: 24 mph Stalling speed: 21 mph
Terence O’Neill’s Pea Pod N10T of 1963 was a diminutive machine in which the pilot lay in a prone position, with most of his body inside the wing. It was powered by a 35 hp Kiekhaefer O-4-35 boat engine mounted inside the vertical fin, and could be carried atop the family car. Taxi tests were performed, but it could not meet FAR 103 requirements and reportedly never flew.
O’Neill Airplane designed the eight-seat Model J Magnum with unusual four-wheel undercarriage in 1980s. Further developed Magnum V8 six-seater, featuring swing tail for loading cargo, which can be built from plans and some available components.
The Magnum is a bush-type, designed around radial engines like prototype’s 350 HP turbocharged Jacobs R755S, a manufacturer’s modification of the L4M 245HP Jacobs. It features an extra-large cabin 49 inches wide by 102 inches long, plus an additional 68 inches cargo camping gear area. Special features are: stall/spin safety system with wind-wing angle indicator, vertical stabilator with forward-canted axis, and slotted stabilator; instant-droppable fuel tank to avoid post-crash fire hazard; and full-span dive flaps intended to limit airspeed to 185 mph at 3800 pounds gross, combined with structural design strength of 7 G’s yield, the maximum available from full-flapped wing at 185. Super rough-ground stability achieved by dual nosewheels.
Power (optional 245 hp) 350 hp Gross Wt. 2900-3500 lb Empty Wt. 1750-2000 lb Wingspan 30 ft 3 in Length 23 ft l1 in Top alt, cruise 200+ mph SL cruise 140 mph Stall 60 mph Climb rate 1000 fpm Takeoff run 1000 ft Landing roll 1000 ft Range 400 mi. plus 45 min. reserve
Magnum V8 Pickup Engine: Ford 351ci V8, 380 hp Speed max: 185 mph Cruise: 140 mph Range: 800 sm Stall: 61 mph ROC: 1200 fpm Take-off dist: 1000 ft Landing dist: 1000 ft Service ceiling: 20,000 ft HP range: 350-450 Fuel cap: 110 USG Weight empty: 1900 lbs Gross: 3800 lbs Height: 9 ft Length: 25.8 ft Wing span: 36 ft Wing area: 189 sq.ft Seats: 2+ Landing gear: dual nose wheel
After the war, Waco developed a new monoplane, the Aristocraft, but abandoned it in 1947, and the company went out of business. O’Neill Airplane Co. formed 1962 to develop Waco’s last design, the Waco Model W Aristocrat, for which all rights were acquired. Terry O’Neill flew the aircraft for a brief period after he had completed the restoration.
The Waco W was flown for only a brief period as it was converted into the tail dragger Aristocraft II, with the engine mounted in the nose, in this configuration it was flown in October 1963 and retained most of the original fuselage, the wings and horizontal tail of NX34219.
O’Neill Aristocraft II
The Artstocraft uses the Waco wing design, simplified for amateur builders. The II design was awarded a Provisional Type Certificate (Al 9CE) by the FAA in 1969. It is one of the largest homebuilts, seating up to six persons. Originally powered by a 200-hp Lycoming IO-360, one amateur builder was adapting the Blanton 220-hp Ford 23 turbo and is using conventional landing gear for more speed and lower cost for cross country use.
In 1968 O’Neill refitted it with six seats, a tricycle landing gear and a single swept fin tail, in this configuration it was flown in October 1968, still registered N34219, but re-designated Model W Winner.
The O’Neill Pea Pod canard design was proposed also, but all activity on the Aristocraft terminated in 1974.
Wingspan 36 ft l0 in Length 25 ft l0 in Gross Wt. 2650-3300 lb Empty Wt. 1600-1800 lb Top speed 135 mph Cruise 120 mph Stall 55 mph Climb rate 500 fpm Takeoff run 1000 ft Landing roll 1000 ft Range 600 miles
Model W Wingspan: 37ft 6in Length: 26.7ft Height: 8ft 4in trigear
The One Aircraft is a 2 + 1 light sporting aircraft produced in Slovenia, the company One Aircraft being set up in 2014.
The aircraft was designed as a joint venture in Slovakia by two companies C2P DOO and KPS Pro DOO, the former carrying out design and the latter supplying metal parts.
Construction is all composite, with a Kevlar roll cage. The aircraft is said to have an endurance of up to nine hours and is fitted with adjustable rudder pedals and adjustable seats. The rear seat can be used as baggage space or for a small person or child up to 90 kg (198 lb).
Production of the aircraft takes place in the town of Grosuplje in central Slovenia, the Company having the ability to produce up to 40 aircraft per year. The Company has also announced that its engineers were in 2015 working on a hybrid variant, this model having an electric engine between the Rotax engine flange and the propeller flange to add an additional 35 kw of power for take-off and climb. The electric engine would be used in the event of an engine failure, providing up to 12 minutes endurance. The batteries are fitted in the wing and under the seats, a regulator being installed on the firewall.
Production was scheduled to commence in 2017.
Engine: Rotax 912ULS2, 75 kw (100 hp) Wingspan: 9.65 m (31 ft 6 in) Length: 6.97 m (18 ft 7 in) Height: 2.2 m (6 ft 8 in) Never exceed speed: 256 km/h (159 mph) Max speed: 239 km/h (149 mph) Cruising speed: 222 km/h (138 mph) Range: 1,600 km (994 miles) Take-off run: 125 m (410 ft) Landing run: 350 m (1,148 ft) Service ceiling: 4,500 m (14,760 ft) Rate of climb: 305 m/min (1,000 ft/min) Fuel capacity: 135 litres (30 Imp gals) Empty weight: 340 kg (750 lb) Useful load: 260 kg (573 lb ) Loaded: weight 600 kg (1,322 lb)
Designed by Robert Counts an initially developed by Omni-Weld Co around the 37 hp Global Tool GMT four-stroke engine that was also under development at the time, the Questor was aimed at the market for light homebuilt aircraft and a prototype first flew in 1983 with a 30 hp Cuyuna T330 two-stroke engine. It later received the GMT engine.
Development was taken over by Questor Aircraft and finally by Nostalgair.
Only the prototype was completed. It was first registered in 1983 as N701W c/n 0Q-1.
The Questor weighed 270 lb, cruised at 120 mph on 37 hp, burning less than 2 USG/hr.
Ownership was to Francis V Leszczynski of Miami, FL, US.