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Today in Aviation History: First Flight of the Yakovlev Yak‑23

Vintage Aviation News

Yakovlev Yak-23 early Soviet jet fighter in service with the Czechoslovak Air Force by u/jacksmachiningreveng in WeirdWings Power came from a Klimov RD‑500 centrifugal‑flow turbojet, rated at 3,500 pounds of thrust. This gave the Yak‑23 a top speed of 575 mph, a range of 650 nm, and a service ceiling of 48,600 ft.

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Overrun Accident Traced to Pilot Fatigue, Other Factors

AV Web

Ceilings were reported as 600 feet above ground level with minimum visibility. Complicating the following sequence of events, the left thrust reverser was inoperative and stowed in the locked position, in accordance with the minimum equipment list.

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Today in Aviation History: First Flight of the Boeing 367-80

Vintage Aviation News

(Boeing) Powered by four Pratt & Whitney JT3C turbojet engines, each producing 10,000 pounds of thrust, the Dash 80 demonstrated impressive performance during testing.

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Today in Aviation History: First Flight of the Convair YB-60

Vintage Aviation News

It was powered by eight Pratt & Whitney J57-P-3 turbojet engines, each producing 8,700 pounds of thrust. The aircraft boasted a combat range of 2,920 miles and a service ceiling of 53,300 feet. These engines propelled the bomber to a top speed of 508 miles per hourfar faster than its piston-powered predecessor.

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Today in Aviation History: First Flight of the Ryan FR-1 Fireball

Vintage Aviation News

Navy photo The FR-1 Fireball was powered by a 1,350-horsepower Wright R-1820-72W Cyclone radial piston engine in the nose and a General Electric J31-GE-3 turbojet engine in the tail, producing 1,600 pounds of thrust. With a service ceiling of 43,100 feet, the Fireball was well-suited for high-altitude interception.

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Today in Aviation History: First Flight of the Lockheed XF-90

Vintage Aviation News

Its two Westinghouse J34-WE-15 turbojet engines produced only 4,100 pounds of thrust each, leaving the aircraft underpowered. Despite the aircraft’s sleek design and aerodynamic improvements, the XF-90’s performance fell short of expectations.

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Today in Aviation History: Boeing 367-80 Prototype Rolls Off the Assembly Line

Vintage Aviation News

Powered by four Pratt & Whitney JT3C-6 turbojet engines, each producing 13,500 pounds of thrust, the aircraft had a range of 3,000 nautical miles and a service ceiling of 42,000 feet. The first production variant, the Boeing 707-120, featured a three-person flight crew and could cruise between 557 and 621 miles per hour.