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What is the difference between a nacelle and a cowling? The definition of a cowling is specifically a removable cover of the engine the removable cover of a vehicle or aircraft engine So a nacelle refers to the whole covering of an engine that is outside the plane, typically on the wing The cowling would just be the removable part of this cover
aerodynamic forces on an engine cowling - Aviation Stack Exchange In Mendenhall's book about the Gee Bee racers, he describes that on the Models Z, R-1, and R-2, there was a strong tendency for the engine cowl to get pulled forward and into the prop during races,
aircraft design - What are cowl flaps? - Aviation Stack Exchange They are flaps or doors on the engine cowling that open up in order to provide increased cooling airflow for the engine They look like this when open They are generally controlled by a handle in the cockpit (some aircraft have electric cowl flaps with an open close switch) The disadvantage is that the open flaps also increase drag So on airplanes equipped with cowl flaps, they are
aircraft design - Aviation Stack Exchange The vortex generator helps only at high angle of attack by energizing the airflow between nacelle and wing During cruise it will create additional drag without much benefit, especially if the nacelle-wing-combination has been designed well However, in the landing configuration it can help to lower minimum airspeed by several knots and make shorter landings possible Now the aircraft maker
How hazardous is it if an engine cowl falls off? But an engine cowling falling off is a structural failure, with unpredictable consequences: What bit of the cowling breaks off? What other parts of the structure do the broken off bits impact upon? Are any of the engine cowling parts being sucked into the engines? In this case, it looks like they were
Where exactly is the engine compartment, remarked in yellow? The engine compartment is the entire area between the firewall and the propeller, which is normally covered by the engine cowling The alternate air valve opens to allow engine intake air to bypass the filter, and to be drawn from the ambient air surrounding the engine itself This would be done in case of blockage to the air filter system due to icing or other possible failure
Do turbofan engine cowlings dilate during spool-up? In the end, since intuition is a poor tool for discovering the truth, I decided to ask: Do turbofan engine cowlings really dilate due to spooling up, and is it really because of pressure difference? And is it the whole cowling or only the inlet that dilates?