Lockheed XFM-2

Lockheed XFM-2
Role	Heavy fighter/bomber destroyer Type of aircraft
Manufacturer	Lockheed Corporation
Status	Cancelled in 1936
Primary user	United States Army Air Corps
Number built	0

The Lockheed XPB-3, later designated XFM-2 (PB - Pursuit, Biplace / FM - Fighter, Multi-seat), was a proposed American heavy fighter aircraft, developed by the Lockheed Corporation during the mid-1930s. Intended as a heavy fighter and bomber destroyer for operation by the United States Army Air Corps, it failed to win a contract for construction of a prototype, the Bell YFM-1 Airacuda being preferred.

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Design and development

Given the Lockheed designation Model 11,^[1] the XFM-2 was developed in response to a United States Army Air Corps requirement for a heavy, twin-engined "bomber destroyer". Originally designated XPB-3 in the 'pursuit, biplace' category, it was redesignated 'XFM-2', for 'fighter, multiplace' early in development. Intended to be powered by two Allison V-1710 supercharged engines, the aircraft was designed for an armament of two 37mm cannon, one mounted in a nose turret and the other in a dorsal turret behind the cockpit.^[2]

The XFM-2 featured a tricycle landing gear configuration, and was a mid-wing monoplane of nearly medium bomber size. The empennage featured a twin-tail arrangement.^[3] Although the XFM-2 design was evaluated favorably by the Air Corps, the Bell YFM-1 Airacuda was selected to fill the bomber destroyer requirement, and further work on the XFM-2 was abandoned.^[4]

References

Citations

^ Badrocke and Gunston 2001, p.7.
^ Matthews, Birch. Cobra! Bell Aircraft Corporation 1934-1946. Atglen, Pennsylvania: Schiffer 1996. ISBN 978-0887409110.
^ Airpower. March 1989. Vol. 19, no. 2, p.16.
^ Francillon 1987, p.161.

Bibliography

Badrocke, Mike; Bill Gunston (2001). Lockheed Aircraft Cutaways: The History of Lockheed Martin. New York: Barns & Noble Books. ISBN 0-7607-2573-X.
Francillon, Rene (1987). Lockheed Aircraft since 1913. Annapolis, MD: Naval Institute Press. ISBN 978-0870218972.

Lockheed and Lockheed Martin aircraft and spacecraft

Transports

Constellation family	Constellation L-049 L-649 L-749 L-1049 L-1249 L-1649 Starliner C-69 C-121 EC-121 R6V XB-30
Hercules family	C-130 C-130J AC-130 DC-130 HC-130 EC-130 EC-130H KC-130 LC-130 MC-130 WC-130 L-100
Model 10 Electra family	Model 10 Electra Junior Lodestar Hudson Super Electra Ventura
L-188 Electra family	L-188 P-3 EP-3 CP-140 P-7
Other types	Air Express Altair C-5 C-141 Excalibur JetStar L-1011 L-2000 Orion Saturn Sirius TriStar RAF Vega Vega Starliner

Fighter-bombers

Lightning family	P-38 XP-49 XP-58
Shooting Star family	F-80 F-94 T-33 T2V
Starfighter family	XF-104 F-104 NF-104A CL-288 CL-1200
Raptor family	YF-22 F-22 FB-22 X-44 MANTA
Other types	A-4AR A-9 F-16 F-21 F-35 F-117 XFM-2 XF-90 YP-24

Reconnaissance

Blackbird family	A-12 SR-71 Blackbird YF-12 M-21 D-21
Maritime patrol	P-2 Neptune S-3 Viking
Other crewed	CL-400 U-2 YO-3 Quiet Star TR-X
Other UAVs	Aequare AQM-60 Cormorant (UAV) Desert Hawk Desert Hawk III Fury MQM-105 Polecat RQ-3 RQ-170 SR-72 X-44 (UAV)

Trainers

Helicopters

Experimental

Light aircraft

Missiles

Engines

J37/T35

Model
numbers

1
2
3
4
5
6¹
7
8
- A/D
9
10
11
12
13¹
14
15
16
17¹
18
19
20
21
22
23
24
25¹
26
27
28¹
29
30
31
32
33
34
35
36¹
37
38¹
39¹
40
41
42
44
45
49
50
51
52
60
61
62
75
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
99
100
104
105
122
129
133
136
137
140
141
144
149
170
171
182
185
186
188
189
193
199
200
204
206
207
210
212
222
244
245
246
249
282 (I)
282 (II)
285
286
288
293
295
296
298
300
301
320
322
325
329
330
331
346
349
351
379
380
382
389
400 (I)
400 (II)
402
407
414
422
437
449
475
480
489
500
520
522
549
580
595
622
645
649
680
685
704
749
760
780
785
822
823
840
849
880
901
915
934
949
977
980
981
984
985
995
1000
1010
1011
1020
1026
1049
- A
1060
1080
1090
1132
1149
1195
1200
1201
1235
1236
1237
1249
1329
1400
1449
1549
1600
1649
1700
1800
1980
2000
2329

Vega	1 2 3¹ 4¹ 5 6 7–10¹ 11 12–14¹ 15 16¹ 17 18 19¹ 20¹ 21 22 23 24 25¹ 26 27–32¹ 33 34 35 36¹ 37 38¹ 39¹ 40 41 42 43

¹ Not assigned

USAAS/USAAC/USAAF/USAF fighter designations 1924–1962, and Tri-Service post-1962 systems

1924 sequences
(1924–1962)

Pursuit (1924–1948)	P-1 P-2 P-3 P-4³ Curtiss P-4 Boeing P-4 P-5 P-6 P-7 P-8 P-9 P-10 P-11 P-12 P-13 P-14 P-15 P-16 P-17 P-18 P-19 P-20 P-21 P-22 P-23 P-24 P-25 P-26 P-27 P-28 P-29 P-30 P-31 P-32 P-33 P-34 P-35 P-36 P-37 P-38 P-39 E P-40 P-41 P-42 P-43 P-44 P-45 P-46 P-47 P-48 P-49 P-50 P-51 P-52 P-53 P-54 P-55 P-56 P-57 P-58 P-59³ XP-59 P-59 P-60 P-61 P-62 P-63 P-64 P-65 P-66 P-67 P-68 P-69 P-70 P-71 P-72 P-73² P-74¹ P-75 P-76 P-77 P-78 P-79 P-80 P-81 P-82 P-83 P-84 P-85 P-86 P-87 P-88 P-89 P-90 P-91 P-92
Fighter (1948–1962)	F-38 F-39 F-40 F-47 F-51 F-59 F-61 RF-61C F-63 F-80 F-81 F-82 F-83 F-84 F/J H F-85 F-86 C D/G/K/L F-87 F-88 F-89 F-90 F-91 F-92 F-93 F-94 F-95 F-96 F-97 F-98 F-99 F-100 B F-101 F-102 B F-103 F-104 S XF-104 NF-104A F-105 F-106³ XF-106 F-106 F-107 F-108 F-109² F-110 F-111 B C K AFTI EF-111A
Pursuit, Biplace	PB-1 PB-2 PB-3
Fighter, Multiplace	FM-1 FM-2
Non-sequential	F-24 P-322 P-400

Tri-service sequence
(1962–present)

Main sequence	F-1 C/D E/F F-2 F-3 F-4 K/M F-5 G F-6 F-7 F-8 F-9 F/G/H/J F-10 F-11 F-12 C² F-13¹ F-14 F-15 E EX J STOL/MTD F-16 XL VISTA F-17 F-18 E/F G F-19¹ F-20 F-21 F-22 YF-22 FB-22 F-23
Non-sequential	F-35 I X-35 F-117

Covert designations

YF-110
- B/D
- C
YF-113 (I)
- A
YF-113 (II)
- B/D
YF-113 (III)
- C
YF-114
- C/D
YF-117
- A
- D
YF-118

Related designations

FV-12

¹ Not assigned • ² Unofficial • ³ Assigned to multiple types
See also: "F-19" • 1919-1924 sequence

This page was last edited on 11 December 2023, at 19:41

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