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What Is Bernoulli’s Principle? A Simple Guide for Pilots

Pilot Institute

Airfoils use this principle, with faster airflow over the top creating lower pressure. If lift were entirely due to Bernoulli, a symmetric airfoil (one with equal curvature on top and bottom) wouldnt generate lift – yet it does when given the right angle of attack. Bernoullis principle isnt something pilots think about routinely.

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Tailless Aircraft: How Airplanes Fly Without a Tail

Pilot Institute

This setup makes the wing less efficient overall, but it can reduce drag, weight, and cost compared to using a separate tail. High aspect ratio wings reduce drag and improve performance during climb or slow flight. On the flipside, a decrease in aspect ratio will result in higher drag. This type of design is a reflex airfoil.

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Wingtip Vortices and Wake Turbulence

Pilot Institute

Pilots avoid vortices by maintaining safe separation and adjusting flight paths. 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 horizontal component of lift is called Induced Drag. 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. Bill Wheatley, Consolidated’s Chief Test Pilot, co-pilot George Newman, and flight engineers Jack Kline and Bob Keith.

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Flight Test Files: The Douglas D-558-2 Skyrocket – Chasing Mach 2

Vintage Aviation News

These stories shine a light on the aircraft and test pilots that pushed the limits of aeronautical knowledge, many of them flying out of the legendary Dryden Flight Research Center (now Armstrong Flight Research Center) at Edwards Air Force Base, California. Research pilot John McKay flew it once in this form on September 17, 1956.

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Biplanes: If One Wing Is Good, Two Must Be Better

Flying Magazine

That combination of requirements was incompatible with very thin wings, and in the early days of aviation it was widelythough not universallybelieved that thin birdlike airfoils were best. Early builders probably did not realize how great the drag of wires was.

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Nemesis NXT

Plane and Pilot

The NXT was designed using computer-based computational fluid dynamics (CFD), NASA-derived airfoils, and was tested in the Lockheed wind tunnel to refine the aerodynamics. Rolls-Royce ACCEL/NXT NEXT Jon Sharp retired from air racing in 2011 as the winningest pilot in the sports history. But the Nemesis story did not end here.

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