Gnome-Rhône 9K
The Gnome-Rhône 9K Mistral was a nine-cylinder 550 hp (405 kW) to 700 hp air-cooled radial engine, that started life as an enlarged Gnome-Rhône 7K with two extra cylinders.
Design and development
The Gnome-Rhône 7K itself was an enlarged version of the Gnome-Rhône 5K which was derived from a licensed version of the Bristol Titan. A redesign of the cylinders is indicated by the K suffix. The 9K was followed by the larger and more powerful 14-cylinder twin row Gnome-Rhône 14K.
The 9K was license produced by Hungarian company Weiss Manfréd Repülogép- és Motorgyár Rt. (WM Rt, the aircraft engine factory of Manfred Weiss). The 9K was also produced in the Soviet Union as the M-75 at GAZ-29 in Zaporozhye. Only small numbers were built and it was dropped in favor of the M-25 a version of the Wright Cyclone and the M-85 a version of the Gnome-Rhône 14K Mistral Major.
Variants
- 9K
- 9Kbr
- 9Kdr
- 9Kdrs
- 9Kers
- 9Kfr
- I.A.R. 9KIc40
- Licence production in Romania by Industria Aeronautică Română (IAR).
Applications
Specifications (9Kd)
Data from [1]
General characteristics
- Type: Nine-cylinder air-cooled radial engine.
- Bore: Script error: No such module "convert".
- Stroke: Script error: No such module "convert".
- Displacement: Script error: No such module "convert".
- Length: Kdr 0.5 reduction gear - Script error: No such module "convert".
- Kdr 0.666· reduction gear - Script error: No such module "convert".
- Kdrs 0.5 reduction gear - Script error: No such module "convert".
- Kdrs 0.666· reduction gear - Script error: No such module "convert".
- Diameter: Script error: No such module "convert".
- Dry weight: Kdr 0.5 reduction gear - Script error: No such module "convert".
- Kdr 0.666· reduction gear - Script error: No such module "convert".
- Kdrs 0.5 reduction gear - Script error: No such module "convert".
- Kdrs 0.666· reduction gear - Script error: No such module "convert".
Components
- Valvetrain: Two valves per cylinder, pushrod operated
- Supercharger: Kdrsd - single stage centrifugal blower
- Fuel system: Carburetor
- Fuel type: Gasoline
- Cooling system: Air-cooled
- Reduction gear: Direct drive, 0.5:1 or 0.666·:1
Performance
- Power output: Kdr - Script error: No such module "convert". at sea level
- Kdrs - Script error: No such module "convert". at Script error: No such module "convert".
- Kdrs - Script error: No such module "convert". at Script error: No such module "convert".
- Compression ratio: 5.5:1
See also
Related development
Comparable engines
Related lists
References
<templatestyles src="Reflist/styles.css" />
- ↑ Script error: No such module "citation/CS1".
Script error: No such module "Check for unknown parameters".