- subsonic wave
- 次声波
Atmospheric Sciences (English-Chinese) dictionary. 2014.
subsonic wave
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Wave drag — is an aerodynamics term that refers to a sudden and very powerful form of drag that appears on aircraft and blade tips moving at high subsonic and supersonic speeds. Overview Wave drag is caused by the formation of shock waves around the aircraft … Wikipedia
Shock wave — Bombshock redirects here. For the Transformers character, see Micromasters#Bombshock. For other uses, see shockwave. Schlieren photograph of an attached shock on a sharp nosed supersonic body. A shock wave (also called shock front or simply shock … Wikipedia
Blast wave — A blast wave in fluid dynamics is the pressure and flow resulting from the deposition of a large amount of energy in a small very localised volume. The flow field can be approximated as a lead shock wave, followed by a self similar subsonic flow… … Wikipedia
Mach wave — A wave formed in front of a body when it is moving at the speed of sound. The waves do not move ahead of the body; they bunch up and form a Mach wave. A Mach wave is at right angles to the direction of movement of the body and is called a normal… … Aviation dictionary
normal Mach wave — A wave formed in front of a body when it is moving at the speed of sound. The waves do not move ahead of the body; they bunch up and form a Mach wave. If a Mach wave is at right angles to the direction of movement of the body, the wave is called… … Aviation dictionary
detached shock wave — A shock wave not in contact with the body that originates it. It is formed when the body is flying at supersonic speeds. The airflow becomes subsonic and then accelerates to supersonic. Also called detached shock … Aviation dictionary
shock wave — n. 1. a surface of discontinuity in a flow of air, sound, etc. set up when the flow suddenly changes from subsonic to supersonic, characterized by marked increases in temperature, pressure, and density of the flow, as in supersonic flow about an… … English World dictionary
Components of jet engines — Diagram of a typical gas turbine jet engine. Air is compressed by the fan blades as it enters the engine, and it is mixed and burned with fuel in the combustion section. The hot exhaust gases provide forward thrust and turn the turbines which… … Wikipedia
Inlet cone — Infobox Aviation name=Inlet cone caption=Inlet cone of a MiG 21MFInlet cones (sometimes called shock cones) are a component of some supersonic aircraft. They are primarily used on ramjets, such as the turboramjets of the SR 71 or the pure ramjets … Wikipedia
Supersonic transport — The Concorde supersonic transport had an ogival delta wing, a slender fuselage and four underslung Rolls Royce/Snecma Olympus 593 engines. A supersonic transport (SST) is a civilian supersonic aircraft designed to transport passengers at speeds… … Wikipedia
Mach number — (mathrm{Ma} or M) (generally pronEng|ˈmɑːk, sometimes IPA|/ˈmɑːx/ or IPA|/ˈmæk/) is the speed of an object moving through air, or any fluid substance, divided by the speed of sound as it is in that substance. It is commonly used to represent an… … Wikipedia
