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Wingtip Vortices and Wake Turbulence

Pilot Institute

When air flows over the aircraft wing, the shape of the airfoil creates low pressure above the wing and relatively higher pressure below the wing. This is called lift. Wingtip vortices are a byproduct of lift. Once the wing stops producing lift, the vortices dissipate instantly. How Are Wingtip Vortices Formed?

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Today in Aviation History: First Flight of the Consolidated B-24 Liberator

Vintage Aviation News

Davis, who had developed a new wing, whose airfoil had a lower drag co-efficiency than other wing designs of the time, and which had already been used on the company’s Model 31/XP4Y Corregidor flying boat. The Davis Wing allowed for higher speeds and added lift at relatively low angles of attack.

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Air pressure and density

Professional Pilot

A lighting the runway with under 1000 ft to go, the pilots breathed a sigh of relief. However, they underestimated their climb from the lift off point and, with the sluggish rate of climb, the saddle ridge across the departure path suddenly became a dangerous obstacle they might not clear.

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The Role of Newton’s Third Law in Aviation

Pilot Institute

Lift is the force that aircraft use to counter gravity. Newton’s Third Law is one of the key laws of physics that explains lift. Lets see what Newtons Third Law is, and why we need it to understand lift. This principle is fundamental in generating lift, thrust, and maneuverability, allowing aircraft to fly.

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Flight Test Files: B-47A Stratojet

Vintage Aviation News

However, neither center had runways long enough to accommodate the B-47, so the aircraft was assigned to NACAs High-Speed Flight Research Station at Edwards Air Force Base in California. Langley was particularly focused on structural loads, while Ames concentrated on dynamic stability. The B-47A fuselage was 106 feet 11 inches in length.

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FAA Releases Powered-Lift Certification Guidance

Flying Magazine

The FAA this month quietly published long-awaited guidance for the certification of powered-lift aircraft—the first new category of civil aircraft since helicopters were introduced in the 1940s. For lift during horizontal flight, they use rigid airfoils such as wings. b) regulations for special class aircraft.

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Flight Test Files: B-47A Stratojet

Vintage Aviation News

Operation of the aircraft from either Center was not practical because of runway length. However, by the mid 1950s, the desire to increase the range and speed of large airplanes led to swept-back wings of high aspect ratio, thin airfoils, and fuselages with high fineness ratios (i.e. long and thin).