The Navy's F11F was so fast it could shoot itself down – and did
By the 1950s, the Cold War was in full swing, and the Soviets appeared to have an edge in fighter plane technology.
The USSR debuted a new plane, the MiG-15. This new fighter had a design that no one had yet seen flying. Its swept-back wingspan allowed it to achieve speeds approaching the speed of sound. It was also incredibly effective against all the fighters of that age. The Navy needed to figure out how to beat it to protect its carrier.
They turned to defense contractor Grumman, who soon turned its designs inside-out and trying to take the new MiG down.
And they started with the F9F Cougar.
What came of the project was the F11F Tiger, which incorporated the latest and greatest in naval aviation technology and tactics into the basic designs of the carrier-based F9F Cougar. The Cougar has a windswept wing design of its own, as the MiG-15 had completely outclassed straight-wing fighters in the skies over Korea. The Navy wanted some fighters who could protect its ships in aerial combat. Grumman began its effort with the F9F Cougar but went back to the drawing board and came out with the Tiger, a supersonic fighter that could be launched from a carrier and bring the fight to the MiGs.
Unfortunately, its high top speed is how the F11F Tiger became the first fighter to shoot itself down.
On Sept. 21, 1956, test pilot Tom Attridge began a shallow dive in his F11F. As he did, he fired two short bursts from the aircraft's four 20mm cannons (20 mm caliber cartridges have an outside shell diameter and inside barrel diameter of 0.79 inches (20 mm). Projectiles or shells are typically 75 to 127 mm (3–5 in) long. Cartridges are typically 75 to 152 mm (3–6 in) long. Many but not all 20 mm shells have an explosive filling and detonating fuze.) and thought nothing of it – until he got to the end of his dive, and the bursts began to shoot up his aircraft. He started at 20,000 feet and then went into a Mach 1 dive as he fired. He accelerated with afterburner and at 13,000 feet, fired to empty. He continued his dive. but at 7,000 feet, something struck his canopy glass and one of his engine intake lips. The aircraft began to lose power, and Attridge headed back to base to land it.
But in order to make it back without shattering the canopy, he had to slow down his Tiger to a crawl, and the engine would only produce 78 percent of its normal power. He wouldn't make it back to base at that rate. Two miles away from the runway, the engine went out completely.
Attridge didn't bail out – test pilots are crazy – in the slowed aircraft, he settled into some trees. Despite some injuries, he exited the plane once on the ground and was picked up by a rescue helicopter. The plane, as it turned out, was hit in the windshield, the right intake, and the nose cone by its own rounds. The low pitch of the plane and its trajectory, combined with the trajectory of the bullets and the speed of the Tiger's descent at half the speed of sound right into the guns' target area, meant that the plane would easily catch up with its own burst of 20mm fire.
The pilot shot himself down in about 11 seconds.
Source:
https://www.wearethemighty.com/history/f11f-shot-itself-down?rebelltitem=3#rebelltitem3
Unfortunately, its high top speed is how the F11F Tiger became the first fighter to shoot itself down.
On Sept. 21, 1956, test pilot Tom Attridge began a shallow dive in his F11F. As he did, he fired two short bursts from the aircraft's four 20mm cannons (20 mm caliber cartridges have an outside shell diameter and inside barrel diameter of 0.79 inches (20 mm). Projectiles or shells are typically 75 to 127 mm (3–5 in) long. Cartridges are typically 75 to 152 mm (3–6 in) long. Many but not all 20 mm shells have an explosive filling and detonating fuze.) and thought nothing of it – until he got to the end of his dive, and the bursts began to shoot up his aircraft. He started at 20,000 feet and then went into a Mach 1 dive as he fired. He accelerated with afterburner and at 13,000 feet, fired to empty. He continued his dive. but at 7,000 feet, something struck his canopy glass and one of his engine intake lips. The aircraft began to lose power, and Attridge headed back to base to land it.
But in order to make it back without shattering the canopy, he had to slow down his Tiger to a crawl, and the engine would only produce 78 percent of its normal power. He wouldn't make it back to base at that rate. Two miles away from the runway, the engine went out completely.
Attridge didn't bail out – test pilots are crazy – in the slowed aircraft, he settled into some trees. Despite some injuries, he exited the plane once on the ground and was picked up by a rescue helicopter. The plane, as it turned out, was hit in the windshield, the right intake, and the nose cone by its own rounds. The low pitch of the plane and its trajectory, combined with the trajectory of the bullets and the speed of the Tiger's descent at half the speed of sound right into the guns' target area, meant that the plane would easily catch up with its own burst of 20mm fire.
The pilot shot himself down in about 11 seconds.
The pilot shot himself down in about 11 seconds.
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