avia.wikisort.org - Engine

The Armstrong Siddeley Serval was a British ten-cylinder aero engine developed by Armstrong Siddeley in the late 1920s. Following company tradition, the engine was named for the serval.

Serval/Double Mongoose
Type	Radial engine
National origin	United Kingdom
Manufacturer	Armstrong Siddeley
First run	1928
Major applications	Armstrong Whitworth Atalanta Saro Cloud

Design and development

The Serval was a ten-cylinder, double-row, air-cooled radial piston engine. It was developed from the Armstrong Siddeley Mongoose and was, more or less, two Mongooses built around a single crankcase. In fact, it first appeared as the Double Mongoose in May 1928.[1]

Built in several variants, power output was about 340 hp (254 kW).

Variants

Serval I initially Double Mongoose

(1931) 340 hp.

Serval III

(1932)

Serval IIIB

(1932) 310 hp.

Serval IV

310 hp.

Serval V

(1933) 340 hp.

Applications

• Airco DH.9
• Armstrong Whitworth Atalanta
• BFW M.36
• Canadian Vickers Vancouver
• Fairey Fox
• ICAR Comercial
• Saro Cloud
• Stampe et Vertongen SV.5 Tornado

Specifications (Serval I)

Data from Lumsden.[2]

General characteristics

• Type: 10-cylinder double-row radial
• Bore: 5 in (127 mm)
• Stroke: 5.5 in (139.7 mm)
• Displacement: 1,080 cu in (17.7 L)
• Length: 54.25 in (1,378 mm)
• Diameter: 45.6 in (1,158 mm)
• Dry weight: 714 lb (324 kg)

Components

• Valvetrain: Overhead poppet valves
• Fuel type: 77 Octane petrol
• Cooling system: Air-cooled
• Reduction gear: Direct drive, Left hand tractor

Performance

• Power output: 340 hp at 2,000 rpm at sea level
• Compression ratio: 5:1
• Power-to-weight ratio: 0.47 hp/lb

See also

Related development

• Armstrong Siddeley Mongoose

Related lists

• List of aircraft engines

References

Notes

Bibliography

На других языках

---

[de] Armstrong Siddeley Serval

Der Armstrong Siddeley Serval ist ein Flugmotor, den der britische Hersteller Armstrong Siddeley ab 1928 baute. Der zweireihige 10-Zylinder-Sternmotor hat einen Hubraum von 17.698 cm³. Die erste Version hieß anfangs auch Double Mongoose. Entsprechend der Tradition des Herstellers, Motoren nach der Familie der Katzenartigen zu benennen, wurde der Motor nach dem Serval benannt.

---

- [en] Armstrong Siddeley Serval

---

[fr] Armstrong Siddeley Serval

Le Armstrong Siddeley Serval est un moteur d'avion dix-cylindre en étoile britannique développé par Armstrong Siddeley à la fin des années 1920. Suivant la tradition de la société le moteur fut nommé d'après le chat sauvage Serval.

---

[it] Armstrong Siddeley Serval

L'Armstrong Siddeley Serval[N 1] fu un motore aeronautico radiale a dieci cilindri, in doppia stella, raffreddato ad aria sviluppato dall'azienda britannica Armstrong Siddeley nei tardi anni venti del XX secolo.

---

[ru] Armstrong Siddeley Serval

Armstrong Siddeley Serval — британский поршневой 10-цилиндровый двухрядный авиадвигатель воздушного охлаждения, разработанный в 1928 году. В силу сложившейся в компании традиции, мотор получил название по одной из разновидностей семейства кошачьих, сервала.

---

---