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The NACA engine cowling on a Curtiss AT-5a. A cowling is the removable covering of a vehicle's engine, most often found on automobiles, motorcycles, airplanes, and on outboard boat motors. On airplanes, cowlings are used to reduce drag and to cool the engine. On boats, cowlings are a cover for an outboard motor.
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. In the case of the NACA cowl, the ring-shaped airfoil is positioned so this lift effect is forward.
The MS400 (Ukrainian: MC-400) is a turbofan engine developed by the Ukrainian aircraft engine manufacturer Motor Sich. [ 1 ] [ 2 ] The engine is used for subsonic unmanned air vehicles. Specification
An engine cowling on a Southwest Airlines Boeing 737-800 fell off on Sunday during takeoff in Denver and struck the wing flap, prompting the Federal Aviation Administration to open an investigation.
An outboard motor is a propulsion system for boats, ... cowling and air silencer removed, exposing its shift/throttle/spark advance linkages, flywheel, ...
Underneath the wing of an A220 with cowlings open. The program cost is estimated at $10 billion. [25] The list price was $12 million in 2011. [26] At the start of its production in 2016, each GTF was costing PW $10m to build, more than the sale price, but should become less than $2m per engine. [27]
They differed from later A-series Fw 190s in that they had shorter spinners, the armored cowling ring was a different shape, with a scalloped hinge on the upper, forward edge of the upper engine cowling, and the bulges covering the interior air intakes on the engine cowlings were symmetrical "teardrops". The panels aft of the exhaust pipes had ...
The first effective drag-reducing cowling that didn't impair engine cooling was the British Townend ring or "drag ring" which formed a narrow band around the engine covering the cylinder heads, reducing drag. The National Advisory Committee for Aeronautics studied the problem, developing the NACA cowling which further reduced drag and improved ...