Napier Cub
| Cub | |
|---|---|
 Napier Cub rear view. | |
| Type | Piston aero engine |
| Manufacturer | D. Napier & Son |
| First run | 1919 |
| Major applications | |
| Number built | 6 |
The Napier Cub was an unusual and very large experimental 1,000 horsepower (750 kW) 16-cylinder 'X' pattern liquid-cooled aero engine built by the British engine company D. Napier & Son. The Cub was the only Napier 'X' engine design. First flown on 15 December 1922 in an Avro Aldershot biplane bomber aircraft, the only other application was in the Blackburn Cubaroo. Only six engines of this type were ordered and produced.[1]
Design
The four banks of four cylinders were arranged in a flattened 'X' when viewed from the front. The angle between the upper cylinders was 52.5 degrees, the lower cylinders 127.5 degrees, which gave an angle of 90 degrees between the outer cylinder banks. The cylinders consisted of separate individual steel forgings with welded steel water cooling jackets. The carburettor was situated below the propeller reduction gear at the front of the engine and fed the inlet valves through four inlet manifolds. The valve drive gear, magnetos and pumps were fitted to the rear of the crankcase.
Specifications (Cub)
Data from Lumsden[2]
General characteristics
- Type: 16-cylinder liquid-cooled X engine
- Bore: 6.25 in (158.75 mm)
- Stroke: 7.5 in (190.5 mm)
- Displacement: 3,681 cu in (60.32 L)
- Dry weight: 2,450 lb (1,111 kg)
Components
- Valvetrain: Single overhead camshaft with four poppet valves per cylinder
- Fuel system: Updraught carburettor
- Fuel type: Petrol
- Cooling system: Liquid cooled
- Reduction gear: Spur geared, reduction ratio 0.489:1, left hand tractor
Performance
- Power output: 1,000 hp at 1,800 rpm
- Compression ratio: 5.3:1
- Power-to-weight ratio: 0.4 hp/lb
See also
Comparable engines
Related lists
References
Notes
Bibliography
- Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.
External links
- "Harnessing 1,000 Horse Power" a 1922 Flight article on the Cub
Content Disclaimer
Informasi ini disarikan dari Wikipedia dan disajikan kembali untuk tujuan edukasi. Konten tersedia di bawah lisensi CC BY-SA 3.0. Kami tidak bertanggung jawab atas ketidakakuratan data yang bersumber dari kontribusi publik tersebut.
- The information displayed on this website is sourced in part or in whole from Wikipedia and has been adapted for the purpose of restating it. We strive to provide accurate and relevant information, however:
- There is no guarantee of absolute accuracy. Wikipedia is an open, collaborative project that can be edited by anyone, so information is subject to change.
- It is not intended to constitute professional advice. The content displayed is for informational and educational purposes only. For important decisions (e.g., medical, legal, or financial), please consult a professional.
- Content copyright. Wikipedia is licensed under the Creative Commons Attribution-ShareAlike License (CC BY-SA). This means that content may be reused with appropriate attribution and shared under a similar license.
- Responsible use. Any risk arising from the use of information from this website is entirely the responsibility of the user.