The Pegasus Quantum is a British two-seat, ultralight trike that was designed and produced by Pegasus Aviation and later by P&M Aviation. The Quantum production was ceased in 2012, but full spares and support are still available and will remain so for the foreseeable future. The Quantum was intended as an up-scale touring trike for long distance flying.
- Quantum 503
- The base model, without a cockpit fairing and powered by the Rotax 503, twin cylinder, two-stroke, air-cooled engine of 37 kW (50 hp). Standard equipment when delivered included in-flight trim, all-wheel suspension and brakes.
- Quantum Sport/Quantum 582
- The mid-model, which adds an instrument pod, wheel pants, a retractable wing-mounted pylon with a gas strut, pylon fairing, extra stowage and powered by the Rotax 582, twin cylinder, two-stroke, liquid-cooled engine of 48 kW (64 hp).
- Quantum SuperSport/Quantum 912
- The high-end model, which adds a full cockpit fairing, windshield, additional stowage and powered by the Rotax 912, four cylinder, four-stroke, liquid-cooled engine of 60 kW (80 hp).
- Crew: one
- Capacity: one passenger
- Wingspan: 10.4 m (34 ft 1 in)
- Wing area: 15.6 m2 (168 sq ft)
- Empty weight: 204 kg (450 lb)
- Gross weight: 409 kg (902 lb)
- Fuel capacity: 49 litres (11 imp gal; 13 US gal)
- Powerplant: 1 × Rotax 912UL four cylinder, four-stroke aircraft engine, 60 kW (80 hp)
- Maximum speed: 145 km/h (90 mph; 78 kn)
- Cruising speed: 97 km/h (60 mph; 52 kn)
- Stall speed: 61 km/h (38 mph; 33 kn)
- Never exceed speed: 145 km/h (90 mph; 78 kn)
- g limits: Ultimate: +6g/-3g, operational: +4g/0g
- Rate of climb: 5 m/s (980 ft/min)