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The Aquila was a nine-cylinder single-row radial aircraft engine designed by the Bristol Engine Company starting in 1934. A sleeve valve engine, its basic design was developed from the Bristol Perseus. The Aquila was never used in production, but further developments led to the Bristol Hercules, Bristol Taurus, and Bristol Centaurus.

Aquila
Type Piston aircraft engine
Manufacturer Bristol Aeroplane Company
First run 1934
Major applications Bristol Bulldog
Bristol Bullpup

Design and development


The Aquila was developed two years after the somewhat larger Perseus, both being sleeve valve designs. The primary difference was in size, the Perseus being based on the 5.75 by 6.5 in (146 by 165 mm) cylinder used in the Mercury engine, while the Aquila used a new and smaller 5 by 5.375 in (127.0 by 136.5 mm) sized cylinder. The result was a reduction in displacement from 1520 to 950 cubic inches (24.9 to 15.6 L).

The first Aquila engine delivered a modest 365 horsepower (272 kW), which was unspectacular for an engine of this size. It soon developed into more powerful versions as improvements were worked into the line (as well as similar changes to the Perseus), and by 1936 it had improved to 500 hp (370 kW). This would have made it an excellent replacement for the Bristol Jupiter, which ended production at 590 hp (440 kW) three years earlier, but by this time almost all interest was on ever-larger engines.


Applications


Note:[1]


Specifications (Aquila I)


Data from Lumsden.[2]

General characteristics

Components

Performance


See also


Related development

Related lists


References



Notes


  1. List from Lumsden, the Bulldog and Bullpup were test aircraft only.
  2. Lumsden 2003, p.118.

Bibliography



На других языках


- [en] Bristol Aquila

[es] Bristol Aquila

El Aquila fue un motor radial de aviación de 9 cilindros en simple estrella, diseñado por la Bristol Engine Company en 1934. Era un motor con válvulas de camisa, siendo su diseño básico un desarrollo del Bristol Perseus, y que condujo posteriormente al Bristol Hercules, Bristol Taurus y Bristol Centaurus. Este motor no entró en producción.[1]

[it] Bristol Aquila

Il Bristol Aquila era un motore aeronautico radiale a 9 cilindri, disposti su di un'unica fila, raffreddato ad aria prodotto dall'azienda britannica Bristol Engine Company a partire dal 1934.



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