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Gnome-Rhône 7K

Gnome-Rhône 7K

The Gnome-Rhône 7K Titan Major was a seven-cylinder 370 hp (270 kW) air-cooled radial engine, that started life as an enlarged Gnome-Rhône 5K with two extra cylinders. The Gnome-Rhône 5K was itself a licensed version of the Bristol Titan. The 7K is very comparable to the Bristol Neptune seven-cylinder engine since they used the same technology.[1] The 7K was followed by the larger and more powerful nine-cylinder 550 hp (405 kW) Gnome-Rhône 9K Mistral. Gnome-Rhône later responded to the need for a more powerful engine by developing the 7K into a two-row version that became the Gnome-Rhône14K Mistral Major.

7K
A Nationalist China Breda Ba.28, powered by a Piaggio-built Gnome-Rhône 7K
TypeRadial engine
ManufacturerGnome et Rhône

Variants

IAR 7KLicence production inRomaniabyIndustria Aeronautică Română(IAR).

Applications

  • Bernard 160

  • Breda Ba.25

  • Breguet 393T

  • Breguet 414

  • FBA 291

  • FBA 294

  • Lioré et Olivier LeO H-199

  • Lioré et Olivier LeO 203

  • Lioré et Olivier LeO H-242

  • Morane-Saulnier MS.235

  • Potez 33/3

  • Rogožarski PVT

  • Rogožarski R-100

  • SET 7

  • SPCA 80

  • SPCA 90

  • Wibault 280

  • Wibault 362

Specifications (7Kd)

Data from [2]

General characteristics

  • Type: Seven-cylinder air-cooled radial engine.

  • Bore: 146 mm (5.75 in)

  • Stroke: 165 mm (6.50 in)

  • Displacement: 19.3 l (1,180 cu in)

  • Length: 146 mm (5.75 in)

  • Diameter: 1,235 mm (48.62 in)

  • Dry weight: 270 kg (600 lb)

Components

  • Valvetrain: Pushrod operated over-head valves, two per cylinder

  • Supercharger: (7Ksd - single speed centrifugal blower)

  • Fuel system: Carburetor

  • Fuel type: Gasoline

  • Cooling system: Air-cooled

Performance

  • Power output: 7Kd - 260 kW (350 hp) at 2,000 rpm at sea-level for take-off 7Ksd - 272 kW (365 hp) at 2,000 rpm at 1,500 m (4,900 ft) 7Ksd - 250 kW (340 hp) at 2,000 rpm at 4,000 m (13,000 ft)

  • Compression ratio: 5.5:1

See also

Related development

  • Bristol Neptune

  • Piaggio Stella P.VII

Comparable engines

  • Armstrong Siddeley Cheetah

  • Armstrong Siddeley Lynx

  • Jacobs R-915

Related lists

  • List of aircraft engines

References

[1]
Citation Linkopenlibrary.orgGunston 1989, p.74.
Sep 26, 2019, 11:29 AM
[2]
Citation Linkdev.museesafran.comMoteurs Gnome-Rhône series K (PDF) (in Spanish). Paris: Société Des Moteurs Gnome-Rhône. Retrieved 3 October 2014.
Sep 26, 2019, 11:29 AM
[3]
Citation Linkdev.museesafran.comMoteurs Gnome-Rhône series K
Sep 26, 2019, 11:29 AM
[4]
Citation Linken.wikipedia.orgThe original version of this page is from Wikipedia, you can edit the page right here on Everipedia.Text is available under the Creative Commons Attribution-ShareAlike License.Additional terms may apply.See everipedia.org/everipedia-termsfor further details.Images/media credited individually (click the icon for details).
Sep 26, 2019, 11:29 AM