supersonic-flow phenomenon
31Space Shuttle — STS redirects here. For other uses, see STS (disambiguation). This article is about the NASA Space Transportation System vehicle. For the associated NASA STS program, see Space Shuttle program. For other shuttles and aerospace vehicles, see… …
32Critical Mach number — Transonic flow patterns on an aircraft wing showing the effects at critical mach. In aerodynamics, the critical Mach number (Mcr) of an aircraft is the lowest Mach number at which the airflow over any part of the aircraft reaches the speed of… …
33Gas dynamic cold spray — is a coating deposition method developed in the mid 1980s in the Soviet Union in The Institute of Theoretical and Applied Mechanics by Papyrin and his team. The solid powders (1 to 50 micrometers in diameter) are accelerated in supersonic gas… …
34Expansion chamber — An Expansion chamber is an exhaust system used on a two stroke cycle engine to enhance its power output by improving its volumetric efficiency. It makes use of the energy left in the burnt exhaust exiting the cylinder to aid the filling of the… …
35Magnus effect — The Magnus effect, demonstrated on a ball. v represents the wind velocity, the arrow F the resulting force towards the side of lower pressure. The Magnus effect is the phenomenon whereby a spinning object flying in a fluid creates a whirlpool of… …
36Pitch-up — In aerodynamics, pitch up is a severe form of stall.The phenomenon of pitch up is directly related to inherent properties of all swept wings. Wingtips of a swept wing carry a higher load relative to the lift they generate compared to more inboard …
37Dust reduction system — mergeto: see below A dust spot caused by a dust particle on the image sensor A dust reduction system, or dust removal system, is a technology employed by several manufacturers of digital system cameras (often referred to …
38Cluster (spacecraft) — Cluster Operator European Space Agency in international collaboration with NASA Major contractors Dornier GmbH (now part of EADS) Mission type Orbiter Satellite of Earth …
39Comet — This article is about the astronomical object. For other uses, see Comet (disambiguation). Comet Hale– …
40Dark Kingdom — This article is about the villain group. For the corresponding story arc, see List of Sailor Moon episodes (season 1). For other uses, see Dark Kingdom (disambiguation). Sailor Moon villain group The Dark Kingdom as seen in the anime, with Queen… …
