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Gnome-Rhône 14M

Gnome-Rhône 14M

The Gnome-Rhône 14M was a small 14-cylinder two-row air-cooled radial engine that was used on several French and German aircraft of World War II.

Gnome-Rhône 14M Mars
A preserved Gnome-Rhône 14M-05 Mars
TypeRadial engine
National originFrance
ManufacturerGnome et Rhône
First run1936
Developed fromGnome-Rhône 14N

Variants

14M-00LH rotation, 474 kW (635 hp)14M-01RH rotation identical to 14M-0014M-04LH rotation, 521.99 kW (700 hp)14M-05RH rotation identical to 14M-0414M-06LH rotation, 521.99 kW (700 hp), reduction gear 0.71:114M-07RH rotation identical to 14M-0614M-08LH rotation, 559.27 kW (750 hp), reduction gear 0.71:114M-09RH rotation identical to 14M-08

Applications

  • Breguet 693

  • Bloch MB.700

  • Gotha Go 244

  • Henschel Hs 129B

  • Focke-Wulf Fw 189E

  • Lioré et Olivier LeO 20

  • Morane-Saulnier Vanneau

  • Potez 220

  • Potez 630

  • Potez 631

  • Potez 633

  • Potez 637

  • Potez 63.11

  • Potez 662

  • SNCAO CAO.600

  • SNCASE SE-400

  • SNCAC NC.510M

  • SNCAC NC.530

  • SNCAC NC.600

Specifications (14M-4)

(14M-5 identical except opposite rotation)

Data from [1]

General characteristics

  • Type: Fourteen-cylinder two-row supercharged air-cooled radial engine

  • Bore: 122 mm (4.80 in)

  • Stroke: 116 mm (4.57 in)

  • Displacement: 18.92 L (1,154.6 cu in)

  • Length: 1,251 mm (49.25 in)

  • Diameter: 950 mm (37.40 in)

  • Dry weight: 419 kg (924 lb)

Components

  • Valvetrain: Two overhead valves per cylinder

  • Supercharger: gear driven, 8.258:1 ratio, 1-speed supercharger

  • Fuel system: Bronzavia 110-L2 carburretor with automatic boost and altitude control

  • Fuel type: 87 octane rating gasoline

  • Oil system: Pressure feed 482.6 kPa (70 psi), dry sump, 120 S.U. secs (25.1 cSt) grade oil.

  • Cooling system: Air-cooled

  • Reduction gear: 0.71:1

  • Air Equipment 47 electric inertia starter

Performance

  • Power output:

  • (Take-off): 521.99 kW (700 hp) at 3,030 rpm for takeoff with 1,100 mm (43.3 in) Hg / +3 kg (6.6 lb) boost

  • (Normal): 492.16 kW (660 hp) at 3,030 rpm at 4,000 m (13,123 ft)

  • (cruising): 339.29 kW (455 hp) at 2,350 rpm at 4,000 m (13,123 ft)

  • Specific power: 27.21 kW/l (0.61 hp/(cu in))

  • Compression ratio: 6.5:1

  • Specific fuel consumption: 0.29 kg/(kW h) (0.48 lb/(hp h))

  • Oil consumption: 0.01 kg/(kW h) (0.018 lb/(hp h))

  • Power-to-weight ratio: 1.27 kW/kg (0.77 hp/lb) B.m.e.p. max: 1,075 kPa (155.9 psi)

See also

  • Pratt & Whitney R-1535 a comparable engine sometimes fitted as an alternative to the 14M on French designs

References

[1]
Citation Linkopenlibrary.orgWilkinson, Paul H. (1946). Aircraft Engines of the World. London: Sir isaac Pitman & Sons Ltd.
Sep 26, 2019, 4:15 PM
[2]
Citation Linkweb.archive.orgAviacionnye motory voennykh vozdushnykh sil inostrannykh gosudarstv (Авиационные моторы военных воздушных сил иностранных государств)
Sep 26, 2019, 4:15 PM
[3]
Citation Linkbase13.glasnet.ruthe original
Sep 26, 2019, 4:15 PM
[4]
Citation Linkweb.archive.orgAviacionnye motory voennykh vozdushnykh sil inostrannykh gosudarstv (Авиационные моторы военных воздушных сил иностранных государств)
Sep 26, 2019, 4:15 PM
[5]
Citation Linkbase13.glasnet.ruthe original
Sep 26, 2019, 4:15 PM
[6]
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, 4:15 PM