Sound Barrier - Revision history

Pnguyen70: /* External links */

2015-11-30T06:18:15Z

External links

← Older revision		Revision as of 02:18, 30 November 2015
Line 40:		Line 40:
	http://www.physicsbook.gatech.edu/Doppler_Effect		http://www.physicsbook.gatech.edu/Doppler_Effect


	~~===External links===~~

	~~Internet resources on this topic~~

	==References==		==References==

Pnguyen70: /* Further reading */

2015-11-30T06:18:03Z

Pnguyen70: /* Mach */

2015-11-30T06:17:23Z

Mach

← Older revision		Revision as of 02:17, 30 November 2015
Line 26:		Line 26:

	===Mach===		===Mach===
	Is a measurement of the ratio of flow velocity past a boundary to the speed of sound (in the local area, as speed of sound depends on the medium).		Named after Ernst Mach, Mach is a measurement of the ratio of flow velocity past a boundary to the speed of sound (in the local area, as speed of sound depends on the medium).

	[[File:machformula.JPG]]		[[File:machformula.JPG]]
			where mu represents the flow velocity and c represents the local speed of sound in the medium. This means that mach is not one set number as the speed of sound is directly correlated to the temperature of the medium. The higher the temperature, the higher the speed of sound in that medium. The formula above is the simplistic form as when the flows become compressible or when the object is at a subsonic speed is much more complicated. For the sake of the topic, the mentioned formula is the only one we will talk about.

	==Connectedness==		==Connectedness==

Pnguyen70: /* Mach */

2015-11-30T06:09:31Z

Mach

← Older revision		Revision as of 02:09, 30 November 2015
Line 26:		Line 26:

	===Mach===		===Mach===
	Is a measurement		Is a measurement of the ratio of flow velocity past a boundary to the speed of sound (in the local area, as speed of sound depends on the medium).
			[[File:machformula.JPG]]

	==Connectedness==		==Connectedness==

Pnguyen70: /* Mach */

2015-11-30T06:01:34Z

Mach

← Older revision		Revision as of 02:01, 30 November 2015
Line 26:		Line 26:

	===Mach===		===Mach===
			Is a measurement

	==Connectedness==		==Connectedness==

Pnguyen70: /* Shock Waves */

2015-11-30T05:58:44Z

Shock Waves

← Older revision		Revision as of 01:58, 30 November 2015
Line 12:		Line 12:
	[[File:shockwaves.gif]]		[[File:shockwaves.gif]]

	~~==Shock Waves==~~		==Sonic Boom==
	~~These are regions of increased air pressure and temperature that are produced by any object moving through air and the most common example of a shock wave is the sonic boom.~~


	===Sonic Boom===
	The sonic boom is heard once the object passes the speed of sound. It is the result of all the compressible regions or high pressure regions in a wave front reaching the observer all at the same time instead of the usual delayed observed in the Doppler effect.		The sonic boom is heard once the object passes the speed of sound. It is the result of all the compressible regions or high pressure regions in a wave front reaching the observer all at the same time instead of the usual delayed observed in the Doppler effect.
	[[File:sonicboom.gif]] [[File:navyairplane.jpg]]		[[File:sonicboom.gif]] [[File:navyairplane.jpg]]

Pnguyen70: /* Sound Barrier */

2015-11-30T05:57:56Z

Sound Barrier

← Older revision		Revision as of 01:57, 30 November 2015
Line 2:		Line 2:
	Sound Barrier is a common term referring to the unusual amounts of drag in a fluid when an object approaches the speed of sound, which is about 1125 ft/s or 767 mph in dry air. First observed during World War II, the sound barrier doesn't exist as a physical limitation but rather represents the difficulty at which objects near the speed of sound experience when trying to accelerate further. The point at which the object does exceed this threshold, a shock wave is produced. The faster the object, the more conical the shock wave. When the speed of an object equals the speed of sound (v = c) then a pile up occurs and creates the "barrier" that was initially thought to be impassable. However, when an object surpasses the speed of sound (v > c, where c is the speed of sound) the shock waves become more conical in form as they lag behind the object. The edge of the cone is a supersonic wave front, known as a shock wave. The following phenomenon is depicted below.		Sound Barrier is a common term referring to the unusual amounts of drag in a fluid when an object approaches the speed of sound, which is about 1125 ft/s or 767 mph in dry air. First observed during World War II, the sound barrier doesn't exist as a physical limitation but rather represents the difficulty at which objects near the speed of sound experience when trying to accelerate further. The point at which the object does exceed this threshold, a shock wave is produced. The faster the object, the more conical the shock wave. When the speed of an object equals the speed of sound (v = c) then a pile up occurs and creates the "barrier" that was initially thought to be impassable. However, when an object surpasses the speed of sound (v > c, where c is the speed of sound) the shock waves become more conical in form as they lag behind the object. The edge of the cone is a supersonic wave front, known as a shock wave. The following phenomenon is depicted below.

	[[File:Speedequalsound.JPG]] [[File:speedgreatersound.JPG]]		[[File:Speedequalsound.JPG]]
			Speed of object = Speed of sound
			[[File:speedgreatersound.JPG]]
			Speed of object > Speed of sound

Pnguyen70: /* Sound Barrier */

2015-11-30T05:57:06Z

Sound Barrier

← Older revision		Revision as of 01:57, 30 November 2015
Line 2:		Line 2:
	Sound Barrier is a common term referring to the unusual amounts of drag in a fluid when an object approaches the speed of sound, which is about 1125 ft/s or 767 mph in dry air. First observed during World War II, the sound barrier doesn't exist as a physical limitation but rather represents the difficulty at which objects near the speed of sound experience when trying to accelerate further. The point at which the object does exceed this threshold, a shock wave is produced. The faster the object, the more conical the shock wave. When the speed of an object equals the speed of sound (v = c) then a pile up occurs and creates the "barrier" that was initially thought to be impassable. However, when an object surpasses the speed of sound (v > c, where c is the speed of sound) the shock waves become more conical in form as they lag behind the object. The edge of the cone is a supersonic wave front, known as a shock wave. The following phenomenon is depicted below.		Sound Barrier is a common term referring to the unusual amounts of drag in a fluid when an object approaches the speed of sound, which is about 1125 ft/s or 767 mph in dry air. First observed during World War II, the sound barrier doesn't exist as a physical limitation but rather represents the difficulty at which objects near the speed of sound experience when trying to accelerate further. The point at which the object does exceed this threshold, a shock wave is produced. The faster the object, the more conical the shock wave. When the speed of an object equals the speed of sound (v = c) then a pile up occurs and creates the "barrier" that was initially thought to be impassable. However, when an object surpasses the speed of sound (v > c, where c is the speed of sound) the shock waves become more conical in form as they lag behind the object. The edge of the cone is a supersonic wave front, known as a shock wave. The following phenomenon is depicted below.

	[[File:Speedequalsound.JPG]]		[[File:Speedequalsound.JPG]] [[File:speedgreatersound.JPG]]

Pnguyen70: /* Sound Barrier */

2015-11-30T05:56:06Z

Sound Barrier

← Older revision		Revision as of 01:56, 30 November 2015
Line 1:		Line 1:
	==Sound Barrier==		==Sound Barrier==
	Sound Barrier is a common term referring to the unusual amounts of drag in a fluid when an object approaches the speed of sound, which is about 1125 ft/s or 767 mph in dry air. First observed during World War II, the sound barrier doesn't exist as a physical limitation but rather represents the difficulty at which objects near the speed of sound experience when trying to accelerate further. The point at which the object does exceed this threshold, a shock wave is produced. The faster the object, the more conical the shock wave. When the speed of an object equals the speed of sound (v = c) then a pile up occurs and creates the "barrier" that was initially thought to be impassable. The following phenomenon is depicted below.		Sound Barrier is a common term referring to the unusual amounts of drag in a fluid when an object approaches the speed of sound, which is about 1125 ft/s or 767 mph in dry air. First observed during World War II, the sound barrier doesn't exist as a physical limitation but rather represents the difficulty at which objects near the speed of sound experience when trying to accelerate further. The point at which the object does exceed this threshold, a shock wave is produced. The faster the object, the more conical the shock wave. When the speed of an object equals the speed of sound (v = c) then a pile up occurs and creates the "barrier" that was initially thought to be impassable. However, when an object surpasses the speed of sound (v > c, where c is the speed of sound) the shock waves become more conical in form as they lag behind the object. The edge of the cone is a supersonic wave front, known as a shock wave. The following phenomenon is depicted below.

	[[File:Speedequalsound.JPG]]		[[File:Speedequalsound.JPG]]

Pnguyen70: /* Sound Barrier */

2015-11-30T05:52:42Z

Sound Barrier

← Older revision		Revision as of 01:52, 30 November 2015
Line 2:		Line 2:
	Sound Barrier is a common term referring to the unusual amounts of drag in a fluid when an object approaches the speed of sound, which is about 1125 ft/s or 767 mph in dry air. First observed during World War II, the sound barrier doesn't exist as a physical limitation but rather represents the difficulty at which objects near the speed of sound experience when trying to accelerate further. The point at which the object does exceed this threshold, a shock wave is produced. The faster the object, the more conical the shock wave. When the speed of an object equals the speed of sound (v = c) then a pile up occurs and creates the "barrier" that was initially thought to be impassable. The following phenomenon is depicted below.		Sound Barrier is a common term referring to the unusual amounts of drag in a fluid when an object approaches the speed of sound, which is about 1125 ft/s or 767 mph in dry air. First observed during World War II, the sound barrier doesn't exist as a physical limitation but rather represents the difficulty at which objects near the speed of sound experience when trying to accelerate further. The point at which the object does exceed this threshold, a shock wave is produced. The faster the object, the more conical the shock wave. When the speed of an object equals the speed of sound (v = c) then a pile up occurs and creates the "barrier" that was initially thought to be impassable. The following phenomenon is depicted below.

	[[File:Speedequalsound.~~jpg~~]]		[[File:Speedequalsound.JPG]]