M-Number

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

M-Number

 

the ratio of the velocity ν of a flow of a liquid or gas at a point to the velocity of sound a at the same point in the flow: M = v/a. The M-number is usually called the Mach number. In Soviet literature the M-number is sometimes called the Maievskii number. (SeeMACH NUMBER.)

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The transmitter consists of two chips: one chip incorporates an oscillator and M-number phase-shift keying (PSK) modulator, the other is a three-stage power amplifier.
The M-number PSK modulator uses a four-stage reflection-type phase shifter with varactor diodes.