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2007-09-11 07:48:44 · 2 answers · asked by rhythm 1 in Science & Mathematics ➔ Engineering
The speed of sound in dry air is given approximately by V sound in air =331.4+0.6Tc m/s where tc is the temperature celsius.. so for example if the temp is 55 (131F) the speed of sound is 364.95..
This calculation is usually accurate enough, but for great precision one must examine the more general relationship for sound speed in gases. This sound speed does not apply to gases other than air, for example the helium from a balloon.
It is important to note that the sound speed in air is determined by the air itself. It is not dependent upon the sound amplitude, frequency or wavelength.
2007-09-11 07:56:12 · answer #1 · answered by midi_junkie 3 · 0⤊ 0⤋
There is no sound "Barrier" if the aircraft is designed correctly to be able to operate at speeds above the speed of sound.
What made people refer to a "Barrier" for the speed of sound was the fact that aircraft were not designed correctly to handle the higher speeds and would always have control and handling problems at speeds approaching the speed of sound, and many of them crashed while attempting the higher speeds.
The only "Mechanics" required to be able to break the sound "Barrier" is the correct design of the aircrafts wings and other control surfaces to be able to pass thru, and shed high speed air from the aircrafts surfaces.
See the following article for good explanation:
http://en.wikipedia.org/wiki/Sound_barrier
2007-09-11 08:56:04 · answer #2 · answered by gatorbait 7 · 0⤊ 0⤋