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In aeronautics, bracing comprises additional structural members which stiffen the functional airframe to give it rigidity and strength under load. Bracing may be applied both internally and externally, and may take the form of struts, which act in compression or tension as the need arises, and/or wires, which act only in tension.
The drag strut member, used to transfer the load to the shear walls or frames; the chord, used to resist the tension and compression forces that develop in the diaphragm since the collector is usually incapable of handling these loads alone
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Simpson started in drag racing and SCCA Formula racing, eventually moving up to the USAC Championship Car series. He raced in the 1968-1974 and 1976-1977 seasons, with 52 career starts. He raced in the 1968-1974 and 1976-1977 seasons, with 52 career starts.
They often consist of a metal flap that is lowered against the air flow, thus creating drag and reducing dive speed. [ 1 ] In the past, dive brakes were mostly used on dive bombers , which needed to dive very steeply, but without exceeding their red line speed , in order to drop their bombs accurately.
The NACA cowling enhanced speed through drag reduction while improving engine cooling. The cowling consists of a symmetric, circular airfoil that is wrapped around the engine. In a normal planar airfoil, like a wing, the difference in airspeeds, and their associated changes in pressure, on the top and bottom surfaces, enhances lift.
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A Townend ring is a narrow-chord cowling ring fitted around the cylinders of an aircraft radial engine to reduce drag and improve cooling. It was patented in 1929, and found use on various aircraft of the 1930s and into the 1940s.