The General Motors FM-2 Wildcat was the most widely produced variant of the Wildcat series and represented a significant evolution in the design, making it a more powerful and effective aircraft in its role as a carrier-based fighter during World War II.
General Motors FM-2 Wildcat Overview:
Development and Background:
- The FM-2 was developed as an improved version of the FM-1 Wildcat, with a more powerful engine and various design enhancements to increase performance, particularly for operations from smaller escort carriers.
- It became the most prolific version of the Wildcat, with a total of 4,777 units produced.
First Flight:
- The FM-2 Wildcat first took to the skies in 1943.
Production Details:
- Total Number Built: 4,777 units
- USN Bureau Numbers:
- 15952 through 16791 (840 units)
- 46838 through 47437 (600 units)
- 55050 through 55649 (600 units)
- 56684 through 57083 (400 units)
- 73499 through 75158 (1,660 units)
- 86297 through 86973 (677 units)
- 86974 through 87719 (canceled)
Physical Characteristics:
- Wingspan: 38 feet
- Wing Area: 260 square feet
- Length: 28 feet 10.6 inches
- Height: 11 feet 9 inches
Powerplant and Propulsion:
- The FM-2 was equipped with the Wright R-1820-56 Cyclone engine, a 9-cylinder single-row radial air-cooled engine producing 1,350 horsepower at takeoff.
- This engine was fitted with a single-stage, two-speed supercharger. The water-injected R-1820-56W variant also produced the same horsepower but offered better performance under certain conditions.
- The aircraft featured a Curtiss 3-blade constant-speed propeller.
Armament:
- The FM-2 carried four .50 caliber machine guns mounted in the wings.
- The last 826 aircraft produced were equipped with the capability to carry six 5-inch rockets under the wings, significantly enhancing their ground-attack capabilities.
Weight and Performance:
- Empty Weight: 5,448 pounds
- Gross Weight: 7,487 pounds
- Maximum Weight: 8,271 pounds
- Maximum Speed: 332 miles per hour at 28,800 feet; 306 miles per hour at sea level (Economical cruise speed was 164 miles per hour)
- Normal Range: 900 miles
- Maximum Range: 1,310 miles
- Initial Climb Rate: 3,650 feet per minute
- Service Ceiling: 34,700 feet
Design and Modifications:
- The FM-2 featured a higher rudder and vertical fin compared to earlier models. This modification was necessary to handle the increased horsepower of the Wright R-1820-56W engine, particularly during takeoff and wave-offs during carrier operations.
- The aircraft maintained the robust and rugged design typical of Wildcats, making it highly durable and reliable in combat.
Operational History:
- The FM-2 was primarily used by the U.S. Navy and Marine Corps, but it also served with the British Royal Navy under the Lend-Lease program, where it was known as the Wildcat VI.
- The FM-2 was well-suited for operations from escort carriers due to its smaller size, excellent low-speed handling, and ability to take off from shorter decks.
- It played a crucial role in providing air cover for convoys and amphibious operations, particularly in the later years of the war.