BELL P-39 AIRACOBRA
XP-39: April 1939 1st flight with turbosupercharger. Engine: Allison V-1710-17: 1,150 hp./T.O./S.L./5 minutes.
1,150 hp./25,000 ft./15 minutes.
XP-39B: In November 1939 1st flight without the turbosupercharger. Engine: Allison V-1710-37: 1,090 hp./T.O./S.L./5
minutes. 1,090 hp./13,000 ft./15 minutes.
P-39C: March 1941: 31st Pursuit Group is supplied with the P-39C. Engine: Allison V-1710-35 (E4): 1,150
hp./T.O./S.L./5 minutes. 1,150 hp./12,000 ft./15 minutes.
Note: On 6 July 1941 the first of three P-39Cs arrives in the U.K.
P-39D-1: April 1941: Deliveries begin to the USAAF. Engine: V-1710-35.
P-400: July 1941: Tested in the U.K. at 7,830 lbs. powered by the Allison V-1710-E4. This model was prone to engine
Airacobra I: September 1941: No.601 Sqdn. became operational.
9 October 1941 the first operational sorties are flown by the RAF.
P-39F: December 1941: 1st deliveries to the USAAF. Engine: V-1710-35.
7 December 1941: P-39Ds made up five pursuit groups: 8th, 31st, 52nd, 36th & 53rd.
P-400: February 1942: Deliveries to Australia began to the 35th FG.
2 June 1942: 1st combat.
P-39D-2: June 1942: Deliveries begin to the USAAF. Engine: Allison V-1710-63: 1,325 hp./T.O./S.L./ 5 minutes.
1,590 hp./2,500 ft./5 minutes/62" Hg boost. 1,150 hp./12,000 ft./15 minutes/42" Hg boost.
P-39K: July 1942: Deliveries begin. V-1710-63
P-39L: July 1942: Deliveries begin. V-1710-63
P-39M: November 1942: Deliveries begin. V-1710-83: 1,200 hp./T.O./S.L./5 minutes. 1,420 hp./9,500 ft./5 minutes.
1,125 hp./14,600 ft./15 minutes.
P-39N: November 1942: Deliveries begin: V-1710-85: 1,200 hp./T.O./S.L./50.5" Hg/5 minutes. 1,420 hp./9,500 ft/
5 minutes/57" Hg. 1,125 hp./15,500 ft./15 minutes/44.5" Hg.
April 1943: 90 P-39Ns are supplied to the French in North Africa.
June 1943: The 18th FG become operational at Guadalcanal with P-39Ns.
P-39Q-1: May 1943 deliveries begin.
15 December 1943 the 15th A.F. in Italy becomes operational.
P-39Q-5: March 1944: The 71st Tactical Reconnaissance Sqn. becomes operational in the PTO.
P-39Q-20: February 1944: The 332nd FG / 15th AF in Italy becomes operational.
P-39Q-21: 4-blade propeller.
P-39Q-25: 4-blade propeller.
P-39Q-30: August 1944 the last P-39s are delivered to the USAAF with 3-blade propellers.
Edited by CORSNING, 16 November 2016 - 02:36 PM.