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- NACA_duct abstract "A NACA duct, also sometimes called a NACA scoop or NACA inlet, is a common form of low-drag air inlet design, originally developed by the U.S. National Advisory Committee for Aeronautics (NACA), the precursor to NASA, in 1945.When properly implemented, a NACA duct allows air to flow into an internal duct, often for cooling purposes, with a minimal disturbance to the flow. The design was originally called a "submerged inlet", since it consists of a shallow ramp with curved walls recessed into the exposed surface of a streamlined body, such as an aircraft. It is especially favored in racing car design.Prior submerged inlet experiments showed poor pressure recovery due to the slow-moving boundary layer entering the inlet. This design is believed to work because the combination of the gentle ramp angle and the curvature profile of the walls creates counter-rotating vortices which deflect the boundary layer away from the inlet and draws in the faster moving air, while avoiding the form drag and flow separation that can occur with protruding scoop designs. This type of flush inlet generally cannot achieve the larger ram pressures and flow volumes of an external design, and so is rarely used for the jet engine intake application for which it was originally designed, such as the North American YF-93 and Short SB.4 Sherpa. It is, however, common for piston engine and ventilation intakes.".
- NACA_duct thumbnail NACA-subm-inlet-early-jet.jpg?width=300.
- NACA_duct wikiPageExternalLink naca.central.cranfield.ac.uk.
- NACA_duct wikiPageExternalLink report.php?NID=2176.
- NACA_duct wikiPageExternalLink naca-duct.htm.
- NACA_duct wikiPageID "2506410".
- NACA_duct wikiPageRevisionID "561100687".
- NACA_duct hasPhotoCollection NACA_duct.
- NACA_duct subject Category:Aerodynamics.
- NACA_duct subject Category:Engine_technology.
- NACA_duct comment "A NACA duct, also sometimes called a NACA scoop or NACA inlet, is a common form of low-drag air inlet design, originally developed by the U.S. National Advisory Committee for Aeronautics (NACA), the precursor to NASA, in 1945.When properly implemented, a NACA duct allows air to flow into an internal duct, often for cooling purposes, with a minimal disturbance to the flow.".
- NACA_duct label "Conducto NACA".
- NACA_duct label "NACA duct".
- NACA_duct label "NACA-Öffnung".
- NACA_duct label "Presa d'aria NACA".
- NACA_duct sameAs NACA-Öffnung.
- NACA_duct sameAs Conducto_NACA.
- NACA_duct sameAs Presa_d'aria_NACA.
- NACA_duct sameAs m.07jmff.
- NACA_duct sameAs Q1766959.
- NACA_duct sameAs Q1766959.
- NACA_duct wasDerivedFrom NACA_duct?oldid=561100687.
- NACA_duct depiction NACA-subm-inlet-early-jet.jpg.
- NACA_duct isPrimaryTopicOf NACA_duct.
