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Topic: Sonic boom

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	Factsheets : Sonic Boom : Sonic Boom
		The strongest sonic boom ever recorded was 144 pounds per square foot and it did not cause injury to the researchers who were exposed to it.
		Boom intensity is greatest directly under the flight path, progressively weakening with greater horizontal distance away from the aircraft flight track.
		For steady supersonic flight, the boom is described as a carpet boom since it moves with the aircraft as it maintains supersonic speed and altitude.
	www.af.mil /factsheets/factsheet.asp?fsID=184 (1033 words)

	NationMaster - Encyclopedia: Shaped Sonic Boom Demonstration
		Shaped Sonic Boom Demonstration used a F-5 Freedom Fighter modified with a new body shape, and was tested over a two year period in what has become the most extensive study on the sonic boom to date.
		NASA's sonic boom mitigation project (SBMP) is the successor to SSBE and is the one whose plans to build a second demonstrator have been cut short.
		In contrast to the (super)sonic boom of an aircraft, this "tunnel boom" is caused by a rapid change of subsonic flow (due to the sudden narrowing of the surrounding space) rather than by a shock wave.
	www.nationmaster.com /encyclopedia/Shaped-Sonic-Boom-Demonstration (566 words)

	Sonic boom
		A sonic boom is the audible component of a shock wave in air.
		Sonic booms generate enormous amounts of sound energy, sounding much like an explosion, typically the shock front may approach 100,000,000 watts per square meter, and may exceed 200 decibels.
		We experience the "boom" when there is a sudden rise in pressure, so the N-wave causes two booms, one when the initial pressure rise from the nose hits, and another when the tail passes and the pressure suddenly returns to normal.
	www.xasa.com /wiki/en/wikipedia/s/so/sonic_boom.html (1138 words)

	NASA - NASA Dryden Fact Sheet - Sonic Booms
		A sonic boom is the thunder-like noise a person on the ground hears when an aircraft or other type of aerospace vehicle flies overhead faster than the speed of sound or supersonic.
		Sonic booms created by vehicles the size and mass of the space shuttle are very distinguishable and two distinct booms are easily heard.
		Sonic booms produced by aircraft flying supersonic at altitudes of less than 100 feet, creating between 20 and 144 pounds overpressure, have been experienced by humans without injury.
	www.nasa.gov /centers/dryden/news/FactSheets/FS-016-DFRC.html (985 words)

	Sonic boom - Cassiopedia, The True Encyclopedia
		Sonic booms generate enormous amounts of sound energy, sounding much like an explosion; typically the shock front may approach 167 megawatts per square meter, and may exceed 200 decibels.
		The "boom" is experienced when there is a sudden rise in pressure, so the N-wave causes two booms, one when the initial pressure rise from the nose hits, and another when the tail passes and the pressure suddenly returns to normal.
		In contrast to the (super)sonic boom of an aircraft, this "tunnel boom" is caused by a rapid change of subsonic flow (from the sudden narrowing of the surrounding space) rather than by a shock wave.
	www.cassiopedia.org /wiki/index.php?title=Sonic_boom (1670 words)

	Sonic Boom, Sound Barrier, and Prandtl-Glauert Condensation Clouds (Site not responding. Last check: )
		As the name suggests, sonic boom is the sound of a crash, bang, or boom which is generated by high speed aircraft.
		A sonic boom is just the shock waves generated by objects which move faster than the speed of sound.
		The sound of a sonic boom has the same physical cause as the sound of cannon, gun, thunder, the crack a whip, or firecrackers.
	www.fluidmech.net /tutorials/sonic/sonicboom.htm (676 words)

	Sonic Boom - Speed Of Sound Facts
		A sonic boom is the thunder-like noise a person on the ground hears when an aircraft or other type of aerospace vehicle flies overhead faster than the speed of sound or supersonic.
		Sonic booms created by vehicles the size and mass of the space shuttle are very distinguishable and two distinct booms are easily heard.
		Sonic booms produced by aircraft flying supersonic at altitudes of less than 100 feet, creating between 20 and 144 pounds overpressure, have been experienced by humans without injury.
	www.aviationexplorer.com /sonic_boom_facts.htm (973 words)

	Sonic boom - Wikivisual
		A sonic boom or "tunnel boom" can also be caused by high-speed trains in tunnels (such as the Japanese Shinkansen).
		Thunder is a type of natural sonic boom, created due to the rapid heating and expansion of air.
		The end of the whip, known as the 'cracker', moves faster than the speed of sound, thus resulting in the sonic boom [3].
	en.wikivisual.com /index.php/Sonic_boom (1733 words)

	Sonic boom Summary
		Sonic booms generate enormous amounts of sound energy, sounding much like an explosion; typically the shock front may approach 167 megawatts per square meter, and may exceed 200 decibels.
		The "boom" is experienced when there is a sudden rise in pressure, so the N-wave causes two booms, one when the initial pressure rise from the nose hits, and another when the tail passes and the pressure suddenly returns to normal.
		In contrast to the (super)sonic boom of an aircraft, this "tunnel boom" is caused by a rapid change of subsonic flow (from the sudden narrowing of the surrounding space) rather than by a shock wave.
	www.bookrags.com /Sonic_boom (1768 words)

	Search Results for "Sonic boom"
		sonic boom, shock wave produced by an object moving through the air at supersonic speed, i.e., faster than the speed of sound.
		boom, sonic The sharp, explosive sound generated by an airplane traveling at speeds greater than the speed of sound.
		...and explained in 1937 by I. Tamm and I. Frank, is analogous to the creation of a sonic boom when an object exceeds the speed of sound in a medium.
	www.bartleby.com /cgi-bin/texis/webinator/sitesearch?FILTER=&query=Sonic+boom (226 words)

	Sonic Boom - Lee Morgan - Pandora Internet Radio
		The 2003 version of Lee Morgan's Sonic Boom was recorded in 1967, was not released until 1979, and then was quickly deleted.
		On the latter, Julian Priester, George Coleman, Harold Mabern, Walter Booker, and Mickey Roker are in the house.
		Sonic Boom showcases Morgan stretching his hard bop pedigree to the breaking point, such as on tracks like "The Mercenary," with its wide-open, nearly Latin groove.
	www.pandora.com /music/album/4b98729c0a80a5e6 (448 words)

	Sonic Boom Creative Media \| 647.722.9988
		Sonic Boom is pleased to announce its selection as digital agency of record for ROMA Moulding.
		Sonic Boom is proud to announce that the agency has been recognized as "one of the world’s best web design studios" in the new title from industry authority TASCHEN GmbH entitled, Web Design: Studios 2.
		Sonic Boom is pleased to announce that the agency has been selected as the Jamieson Laboratories interactive agency of record.
	www.sonicboom.com (240 words)

	Sonic Boom
		However, since both shock waves pass a location very quickly, a stationary observer may only hear one sonic boom, since the human ear has difficulty distinguishing the sudden sound changes, the sonic booms "appear" to merge together and only one sonic boom is heard.
		As the altitude of the aircraft increases the intensity of the sonic boom at ground level decreases.
		The lateral spreading of the sonic boom is dependent only upon altitude, speed and the atmospheric conditions.
	library.thinkquest.org /12228/Page3.html (1097 words)

	What is a Sonic Boom
		From the perspective of the aircraft, the boom appears to be swept backwards as it travels awayfrom the aircraft.
		Duration of sonic boom is brief; less than a second, 100 milliseconds (.100 seconds) for most fighter- sized aircraft and 500 milliseconds for the space shuttle or Concorde jetliner.
		Continuing research specifically addresses modeling the generation of a sonic boom and its impact on the environment people, domestic animals, wildlife, and historical, unconventional and conventional structures.
	www.sky-flash.com /boom.htm (1044 words)

	Guardian \| Palestinians hit by sonic boom air raids
		The UN Palestinian refugee agency said a majority of the patients seen at its clinics as a result of the sonic booms were under 16 and suffering from symptoms such as anxiety attacks, bedwetting, muscle spasms, temporary loss of hearing and breathing difficulties.
		"Sonic booms are an indiscriminate instrument, the use of which punishes the population collectively.
		The military was forced to apologise after one sonic boom was unintentionally heard hundreds of kilometres inside Israel last week.
	www.guardian.co.uk /print/0,3858,5324569-103681,00.html (787 words)

	Sonic Boom and the Supersonic Transport (Site not responding. Last check: )
		Clouds, turbulence, wind, and sharp temperature inversions are inhomogeneities in the atmosphere that alter the intensity of the sonic boom.
		A factor that tends to affect the peak over-pressure is the length of the aircraft: the longer the airplane, the less intense is the sonic boom.
		The myriad of variables affecting the sonic boom as it is generated and propagated, plus the complexity of the response by a structure, make it difficult, if not impossible, to predict exactly the damage that will be caused by a particular supersonic overflight.
	www.airpower.maxwell.af.mil /airchronicles/aureview/1971/jul-aug/roberds.html (4078 words)

	Sonic boom attacks spread trauma across Gaza - World - smh.com.au
		DOCTORS in Gaza say a combination of Israeli bombardment, sonic boom attacks and economic warfare is leading to a serious deterioration in public health, with children and pregnant women most vulnerable.
		They believe the main cause is Israel's reintroduction of sonic boom attacks in recent days in a campaign to terrify Gaza's 1.4 million people and prevent them from sleeping.
		Israel began to use sonic booms against the people of Gaza last year, and security officials sought to portray the booms as a "non-lethal" and humane weapon designed to persuade the civilians of Gaza to force militants to stop firing missiles at neighbouring Israel and, more recently, to free Corporal Shalit.
	www.smh.com.au /news/world/sonic-shock-in-gaza/2006/07/05/1151779013619.html (726 words)

	Re: What causes a sonic boom.?
		Some people imagine that the speed of sound is a "barrier", and that a sonic boom is the noise made when this barrier is "broken." This isn't correct.
		This is because for you the "boom" is a region of increased pressure that follows along with the plane.
		A sonic boom is only a "boom" or "crack" sound for people on the ground.
	www.madsci.org /posts/archives/feb98/886430559.Ph.r.html (823 words)

	Sonic Boom Lines
		The window-shattering sonic boom that occurs when the aircraft "breaks the sound barrier" is caused by an atmospheric shock wave that extends from the aircraft to the ground.
		The center line of the cylinder is aligned with the Earth's rotational axis and the surface of the cylinder (which represents all points that are rotating at the speed of sound) pierces the Earth's surface at the two sonic boom latitudes.
		The two supersonic atmospheric regions that are directly above the sonic boom lines at the Earth's surface are called, curiously, the "nether regions." Those small areas of the atmosphere dissipate the sonic boom shock waves into outer space, thus preventing the shock waves from causing a continuous, annoying boom to listeners on the surface.
	www.mattox.com /sonic/sonic.html (629 words)

	Sonic boom silenced them - The Boston Globe
		The Sonics took an easier-than-it-should-have-been, 113-100 victory over the Boston green and white, who did everything in their power to make the guests feel right at home.
		Seattle may not be as good as last year's 52-win ensemble, but the Sonics certainly are not as bad as the 2-5 group that arrived here last night, supposedly to play out the string and allow the Celtics to get back to.500.
		The Sonics made the plays, more than enough to win a game few thought they'd even be in position to compete.
	www.boston.com /sports/basketball/celtics/articles/2005/11/17/sonic_boom_silenced_them (800 words)

	NASA wants to take the blast out of sonic booms \| NetworkWorld.com Community
		NASA said sonic boom modeling is one of the key technologies needed to let a next generation supersonic aircraft quiet enough that it can fly supersonically over land without significant disturbance to the people or damage to property under such noise.
		The sonic boom work will include a look at what JAXA has done with its "Silent Supersonic Technology Demonstration Program" that is researching key technologies to realize a silent supersonic transport.
		The lateral spreading of the sonic boom depends only upon altitude, speed and the atmosphere -- and is independent of the vehicle's shape, size, and weight, NASA said.
	www.networkworld.com /community/node/27649 (826 words)

	PlayStation News Articles: - Sonic boom
		The storyline pits Sonic and his rivals against the evil machinations of Eggman once again, with the drama unfolding from the different perspectives of the rivals while converging on the disappearance of the mysterious Chao.
		Each character has particular traits; Sonic for instance is the most well rounded, while Rouge balances both attack and defence with her signature Bat calling move, and Espio employs camouflage to confound foes and throws stars to impede them.
		Sonic Rivals builds upon the great idea of its PSP predecessor, the reinvention of classic Sonic gameplay in 3D featuring a new competitive twist, with new characters, challenges and, most importantly, two player battling.
	uk.playstation.com /home/news/articles/detail/item92167 (512 words)

	CNN.com - Bang goes the sonic boom - Oct 2, 2006
		But by taking the bang out of the sonic boom a new generation of supersonic cruisers aim to rekindle that sense of glamour while making it a quieter and more environmentally friendly 21st-century mode of travel.
		While taking the bang out of the sonic boom may usher in a new era of supersonic travel for the super-rich, there are still reservations that the aircraft design and technology could be applied to commercial aircraft, primarily because the magnitude of a sonic boom increases with an aircraft's weight.
		The noise from jaws dropping at the cost of a ticket might be louder than the sonic boom itself.
	www.cnn.com /2006/TECH/science/10/02/fs.supersonic/index.html?section=cnn_latest (1072 words)

	Sonic Boom May 1991
		Sonics first solo album came out in March of this year, and this is his first tour since the Space-men split up.
		Sonic Boom came onstage with little fuss, and after a technical hitch in the first song, they proceeded to enthrall the audience with a mix of Spacemen 3 songs, as well as a Mudhoney cover, just to prove that they too can steal other peoples songs.
		Having gone to the interview expecting the worst we all found Sonic to be a charming and honest guy who has had too much bad press, a controversial stance perhaps but what the fuck.
	www.obsolete.com /convulsion/interviews/convulse/1.9.html (1789 words)

	The Doppler Effect and Sonic Booms
		The sudden change in pitch of a car horn as a car passes by (source motion) or in the pitch of a boom box on the sidewalk as you drive by in your car (observer motion) was first explained in 1842 by Christian Doppler.
		It is this intense pressure front on the Mach cone that causes the shock wave known as a sonic boom as a supersonic aircraft passes overhead.
		A supersonic aircraft usually produces two sonic booms, one from the aircraft's nose and the other from its tail, resulting in a double thump.
	www.kettering.edu /~drussell/Demos/doppler/doppler.html (1050 words)

	Gazans struggle through indiscriminate sonic boom raids - World - theage.com.au
		They believe the main cause is Israel's reintroduction of sonic boom attacks in recent days in a bid to terrify Gaza's 1.4 million people and prevent them from sleeping.
		Israel began to use sonic booms against the people of Gaza last year, shortly after it withdrew its troops and 7500 Jewish settlers from inside the crowded Palestinian enclave.
		Areesh Bahja, 26, said the sonic booms were severely distressing for her three children, aged between five years and five months.
	www.theage.com.au /news/world/gazans-struggle-through-indiscriminate-sonic-boom-raids/2006/07/05/1151779012207.html (839 words)

	NASAexplores K-4 Lesson: Sonic Boom (Teacher Sheets)
		The shock wave forms a cone of pressurized air molecules that move outward and rearward in all directions and extend to the ground.
		There are several factors that can influence sonic booms—weight, size, and shape of the aircraft or vehicle, plus its altitude, attitude and flight path, and weather or atmospheric conditions.
		As the shock cone gets wider, and it moves outward and downward, its strength is reduced. Generally, the higher the aircraft, the greater the distance the shock wave must travel, reducing the intensity of the sonic boom.
	www.nasaexplores.com /show_k4_teacher_st.php?id=040227145742 (578 words)

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