The Miles M.77 Sparrowjet was a twin-engined jet-powered racing aeroplane built by Miles Aircraft by fitting Turboméca Palas jets to the prototype Miles Sparrowhawk . The conversion commenced in December 1950 and the Sparrowjet first flew on 14 December, 1953. Other modifications included a new tail section and front fuselage (in place of the Sparrowhawk's single engine), fixed, faired undercarriage and a large clear canopy. The wing roots were modified to take the Palas engines which delivered 330 lb of thrust at sea level.
The Sparrowjet won the SBAC Challenge Cup at Yeadon, West Yorkshire in 1956 and the King's Cup in 1957 with a top speed of 228 mph. In 1964 the Sparrowjet was destroyed in a hanger fire.
Specifications (Sparrowjet)
General characteristics
- Crew: one pilot
- Length: 30 ft 10 in (9.40 m)
- Wingspan: 28 ft 6 in (8.69 m)
- Height: ft in ( m)
- Wing area: 156 ft² (14.5 m²)
- Empty: 1,578 lb (717 kg)
- Loaded: 2,400 lb (1,090 kg)
- Maximum takeoff: lb ( kg)
- Powerplant: 2x Turboméca Palas , 330 lbf (1.5 kN) thrust each
Performance
- Maximum speed: 230 mph (368 km/h)
- Range: 270 miles (432 km)
- Service ceiling: ft ( m)
- Rate of climb: 2,100 ft/min (640 m/min)
- Wing loading: 15 lb/ft² (75 kg/m²)
- Thrust-to-weight: 0.28:1
Related content
Related development:
Miles Sparrowhawk
Comparable aircraft:
Designation sequence:
M.69 -
M.71 -
M.75 -
M.77 -
M.100
