mach cone

mach cone
Usage: usually capitalized M
Etymology: after Ernst Mach
: the conical pressure wave front produced by a body moving at a speed greater than that of sound

Useful english dictionary. 2012.

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  • Mach cone — The cone shaped shock wave produced by a sharp pointed object moving through the atmosphere at a speed greater than Mach 1. The area bounded by the sides of an oblique shock wave forms the Mach cone …   Aviation dictionary

  • 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

  • Mach line — A theoretical line representing the backsweep of a cone shaped shock wave made by an assumed infinitesimally small particle moving at the same speed and along the same flight path as that of an actual body or particle. This line, as represented… …   Aviation dictionary

  • 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

  • Mach angle — The acute angle between a weak shock wave and a free stream airflow. Hence, at Mach 1, the Mach angle is 90°, and, thereafter, its value is equal to sin−1 × 1/M. It is represented by the symbol μ. See also Mach cone …   Aviation dictionary

  • mach angle — ˈmäk , ˈmȧk noun Usage: usually capitalized M Etymology: after Ernst Mach died 1916 Austrian physicist and philosopher : half of the vertex angle of a Mach cone whose sine is the ratio of the speed of sound to the speed of a moving body …   Useful english dictionary

  • MACH (E.) — Physicien préoccupé en même temps de la critique historique des concepts physiques et des phénomènes de psychophysiologie des sensations, Mach a fourni une œuvre scientifique importante à la jonction de plusieurs disciplines, mais souvent mal… …   Encyclopédie Universelle

  • Cone clutch — (Mach.) A friction clutch with conical bearing surfaces. [Webster 1913 Suppl.] …   The Collaborative International Dictionary of English

  • Cone pulley — Pulley Pul ley, n.; pl. {Pulleys}. [F. poulie, perhaps of Teutonic origin (cf. {Poll}, v. t.); but cf. OE. poleine, polive, pulley, LL. polanus, and F. poulain, properly, a colt, fr. L. pullus young animal, foal (cf. {Pullet}, {Foal}). For the… …   The Collaborative International Dictionary of English

  • pitch cone — Mach. See under pitch surface. * * * …   Universalium

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