Gnome-Rhône 14N

The Gnome-Rhône 14N was a 14-cylinder two-row air-cooled radial engine designed and manufactured by Gnome-Rhône just before the start of World War II. A development of the Gnome-Rhône 14K, the 14N was used on several French and even one German aircraft.

Design and development
The 14K's reliability was poor, so Gnome-Rhône carried out major redesign, using different materials for the pistons and valves, and enlarging the cooling fins to increase surface area by 39%.

The 14N was introduced in 1937 and was quickly installed on several aircraft models. In 1939, minor improvements allowed Gnome-Rhône to increase the compression ratio from 6.1:1 to 6.8:1, which increased power.

The 14N was further developed into the Gnome-Rhône 14R featuring a 2-stage supercharger, but this type was not widely used until after World War II as production of improved engines was restricted by the armistice with Germany.

Variants
Data from:Aircraft engines of the World 1945, Aircraft engines of the World 1946


 * 14N-2: Left hand (LH) rotation, 1050 hp
 * 14N-3: Right hand (RH) rotation version of N-2


 * 14N-10: LH rotation, 910 hp
 * 14N-11: RH rotation version of N-10


 * 14N-16: LH rotation, 935 hp
 * 14N-17: RH rotation version of N-16


 * 14N-20: LH rotation, 1135 hp
 * 14N-21: RH rotation version of N-20


 * 14N-44: LH rotation, 1050 hp
 * 14N-45: RH rotation version of N-44


 * 14N-48: LH rotation, 1180 hp
 * 14N-49: RH rotation version of N-48


 * 14N-50: LH rotation, 1400 hp


 * 14N-54: LH rotation, 1250 hp
 * 14N-55: RH rotation version of N-54


 * 14N-58: LH rotation, 1180 hp
 * 14N-59: RH rotation version of N-58

Applications
• Amiot 351 (1 × 14N-38 + 1 × 14N-39)

• Amiot 354 (1 × 14N-48 + 1 × 14N-49)

• Bloch MB.131 (1 × 14N-10 + 1 × 14N-11)

• Bloch MB.135 (2 × 14M-4 + 2 × 14M-5)

• Bloch MB.150 (14N-7)

• Bloch MB.151 (14N-35)

• Bloch MB.152 (14N-25)

• Bloch MB.155 (14N-49)

• Bloch MB.161 (2 × 14N-38 + 2 × 14N-39)

• Bloch MB.170 (2 × 14N-6)

• Bloch MB.174 (2 × 14N-49)

• Bloch MB.175 (2 × 14N-48)

• Bloch MB.210 (1 × 14N-10 + 1 × 14N-11)

• Bloch MB.220 (1 × 14N-16 + 1 × 14N-17)

• Bloch MB.300 Pacifique (2 × 14N-16 + 1 × 14N-17)

• Dewoitine D.342 (2 × 14N-16 + 1 × 14N-17)

• Farman F.222.2 (4 × 14N-11)

• Farman F.224 (4 × 14N-1)

• Latécoère 611 (prototype) (2 × 14N-30 +2 × 14N-31 )

• Lioré et Olivier LeO 451 (14N-48 + 14N-49 or 14N-38 + 14N-39 or 14N-46 + 14N-47)

• Sud-Est SE.161 Languedoc (2 × 14N-44 + 2 × 14N-45 )

• Messerschmitt Me 323 (various)

• Koolhoven F.K.58A (14N-16)

• PZL P.24F and G (14N-7)

• PZL P.24H (14N-21)

• PZL.43 (14N-1)

• SNCAO CAO.700 (4 × 14N-49)

• SNCASE SE.100 (1 × 14N-20 + 1 × 14N-21)