F84F Thunderstreak Ohio Air Guard

The swept-wing Republic F-84F Thunderstreak evolved from the straight-wing F-84 Thunderjet. The "F" model incorporated such aerodynamic improvements as swept back wings, due to the success of the North American Aviation F-86 Sabre. It also featured improved tail and elevator surfaces, a smaller canopy and a redesigned windscreen. With these improvements, the F-84F was introduced in 1949 as a competitor to the F-86.

The prototype first flew on June 3, 1950, and deliveries began in 1954, primarily to the Tactical Air Command (TAC) as a ground support fighter bomber.

Armed with six 50-caliber M-3 aircraft machine guns, 24 5-inch rockets and 6,000 pounds of bombs the Thunderstreak was designed as a fighter-bomber capable of attacking ground targets and intercepting high-altitude Soviet Bombers.

Early models of the F-84F were plagued by control and stability problems. The first production models were equipped with conventional stabilizer-elevator tail-planes, which caused an accelerated stall pitch-up problem and degraded maneuverability at combat speeds. Republic promised a tooling commonality of 55 percent with the F-84, yet when initial production finally commenced it was much closer to 15 percent.

By May of 1954, the introduction of a hydraulically powered one-piece stabilizer and side-mounted spoilers improved performance and corrected the high-speed control problems.
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