SramTon Posted February 16, 2010 Share Posted February 16, 2010 I'm hoping one of the more scientific/engineering-minded types will be able to help with this. If a car-tyre is being inflated when it suddenly (and violently) bursts at 35psi, is it possible to calculate the likely approximate sound pressure (in dB) created by the burst? Cheers. Look at her riding pillions on Davy’s sea-bike, carrying an apoplectic macaw in a silver hoop. Oh, Morton, let’s go there this winter! Or learning the Japanese chinchona from that Kobe group, in a dress that looks like a blowtorch rising from one knee, and which should sell big in Texas. Morton, is that real fire? Happy, happy little girl! Link to comment Share on other sites More sharing options...
The greenock guvnor Posted February 16, 2010 Share Posted February 16, 2010 I'm hoping one of the more scientific/engineering-minded types will be able to help with this. If a car-tyre is being inflated when it suddenly (and violently) bursts at 35psi, is it possible to calculate the likely approximate sound pressure (in dB) created by the burst? Cheers. No. If a writer of prose knows enough of what he is writing about he may omit things that he knows and the reader, if the writer is writing truly enough, will have a feeling of those things as strongly as though the writer had stated them. The dignity of movement of an ice-berg is due to only one-eighth of it being above water. A writer who omits things because he does not know them only makes hollow places in his writing. —Ernest Hemingway Link to comment Share on other sites More sharing options...
dmc Posted February 16, 2010 Share Posted February 16, 2010 No. You don't really know do you? & by the way, no! RIP New Order... Link to comment Share on other sites More sharing options...
NewTon Posted February 17, 2010 Share Posted February 17, 2010 Does P1V1 still equal P2V2 these days ? Link to comment Share on other sites More sharing options...
Alibi Posted February 17, 2010 Share Posted February 17, 2010 I'm hoping one of the more scientific/engineering-minded types will be able to help with this. If a car-tyre is being inflated when it suddenly (and violently) bursts at 35psi, is it possible to calculate the likely approximate sound pressure (in dB) created by the burst? Cheers. In theory you could do very complicated calculations that in essence would analyze the flow of air from the high pressure tyre outwards, but there are a lot of variables and it would need a fairly sophisticated computer programme to deal with it. Easier for something like that to do an experiment and measure the sound pressure with a dB meter at various distances, and maybe construct a graph for future predictions. "Any nation given the opportunity to regain its national sovereignty and which then rejects it is so far beneath contempt that it is hard to put words to it." Link to comment Share on other sites More sharing options...
NewTon Posted February 17, 2010 Share Posted February 17, 2010 In theory you could do very complicated calculations that in essence would analyze the flow of air from the high pressure tyre outwards, but there are a lot of variables and it would need a fairly sophisticated computer programme to deal with it. Easier for something like that to do an experiment and measure the sound pressure with a dB meter at various distances, and maybe construct a graph for future predictions. naw, it's simple - the bigger the hole, the quicker the pressure drops. Or so my old mate Boyle claims. Link to comment Share on other sites More sharing options...
GiGi Posted February 17, 2010 Share Posted February 17, 2010 Does P1V1 still equal P2V2 these days ? Boyle's Law? Anyway, yes it does. Peter Weatherson is the greatest player since Ritchie, and should be assigned 'chairman for life' Link to comment Share on other sites More sharing options...
Honor Todd Posted February 17, 2010 Share Posted February 17, 2010 naw, it's simple - the bigger the hole, the quicker the pressure drops. Or so my old mate Boyle claims. My up to date mate Boyle also assumes a constant temperature . It is the hole/crack expanding faster than the speed of sound that causes the phenomenal noise. This is in the intersonic range; effectively causing a sonic boom. It will measure about 170 dB. Your best bet would be to look at the analogy of a balloon. However, as Alibi indicates there are a number of variables. So although interesting I am out! Kindest Regards “Man cannot make a worm, yet he will make gods by the dozen†Link to comment Share on other sites More sharing options...
mortonjag Posted February 17, 2010 Share Posted February 17, 2010 My up to date mate Boyle also assumes a constant temperature . It is the hole/crack expanding faster than the speed of sound that causes the phenomenal noise. This is in the intersonic range; effectively causing a sonic boom. It will measure about 170 dB. Your best bet would be to look at the analogy of a balloon. However, as Alibi indicates there are a number of variables. So although interesting I am out! First they ignore you, then they laugh at you, then they fight you, then they pretend to befriend you, then you win! YER BARD Link to comment Share on other sites More sharing options...
NewTon Posted February 17, 2010 Share Posted February 17, 2010 My up to date mate Boyle also assumes a constant temperature . It is the hole/crack expanding faster than the speed of sound that causes the phenomenal noise. This is in the intersonic range; effectively causing a sonic boom. It will measure about 170 dB. Your best bet would be to look at the analogy of a balloon. However, as Alibi indicates there are a number of variables. So although interesting I am out! When I last had a chat with my old mate Boyle (circa 1965) he had the theory that the temperature in Inverclyde is relatively constant from one minute to the next. Does yer up to date mate disagree ? Link to comment Share on other sites More sharing options...
shaddypeekey Posted February 17, 2010 Share Posted February 17, 2010 Sonar operators can work it out, using onboard equipment, they do it regularly. Run Silent, Run Deep... "Men who go to sea in Submarines are nothing but pirates in His Majesties uniform" Admiral of the Fleet Lord Jellicoe Link to comment Share on other sites More sharing options...
The greenock guvnor Posted February 17, 2010 Share Posted February 17, 2010 Still No Then. If a writer of prose knows enough of what he is writing about he may omit things that he knows and the reader, if the writer is writing truly enough, will have a feeling of those things as strongly as though the writer had stated them. The dignity of movement of an ice-berg is due to only one-eighth of it being above water. A writer who omits things because he does not know them only makes hollow places in his writing. —Ernest Hemingway Link to comment Share on other sites More sharing options...
The greenock guvnor Posted February 17, 2010 Share Posted February 17, 2010 Sonar operators can work it out, using onboard equipment, they do it regularly. Wrong. They don't measure cars bursting their tyres. If a writer of prose knows enough of what he is writing about he may omit things that he knows and the reader, if the writer is writing truly enough, will have a feeling of those things as strongly as though the writer had stated them. The dignity of movement of an ice-berg is due to only one-eighth of it being above water. A writer who omits things because he does not know them only makes hollow places in his writing. —Ernest Hemingway Link to comment Share on other sites More sharing options...
shaddypeekey Posted February 17, 2010 Share Posted February 17, 2010 Still No Then. Naw, its an Aye! Run Silent, Run Deep... "Men who go to sea in Submarines are nothing but pirates in His Majesties uniform" Admiral of the Fleet Lord Jellicoe Link to comment Share on other sites More sharing options...
The greenock guvnor Posted February 17, 2010 Share Posted February 17, 2010 Naw, its an Aye! Naw it isnae. If a writer of prose knows enough of what he is writing about he may omit things that he knows and the reader, if the writer is writing truly enough, will have a feeling of those things as strongly as though the writer had stated them. The dignity of movement of an ice-berg is due to only one-eighth of it being above water. A writer who omits things because he does not know them only makes hollow places in his writing. —Ernest Hemingway Link to comment Share on other sites More sharing options...
mortonjag Posted February 17, 2010 Share Posted February 17, 2010 I'm hoping one of the more scientific/engineering-minded types will be able to help with this. If a car-tyre is being inflated when it suddenly (and violently) bursts at 35psi, is it possible to calculate the likely approximate sound pressure (in dB) created by the burst? Cheers. I reckon it's likely that you could get an approximation. First they ignore you, then they laugh at you, then they fight you, then they pretend to befriend you, then you win! YER BARD Link to comment Share on other sites More sharing options...
The greenock guvnor Posted February 17, 2010 Share Posted February 17, 2010 I reckon it's likely that you could get an approximation. Far, far too many variables but approximately maybe but then the question is what would the approximation range be. My answer would be between "****in hell whit wis that? to Jesus I nearly s*** myself" scale range. If a writer of prose knows enough of what he is writing about he may omit things that he knows and the reader, if the writer is writing truly enough, will have a feeling of those things as strongly as though the writer had stated them. The dignity of movement of an ice-berg is due to only one-eighth of it being above water. A writer who omits things because he does not know them only makes hollow places in his writing. —Ernest Hemingway Link to comment Share on other sites More sharing options...
mortonjag Posted February 17, 2010 Share Posted February 17, 2010 Far, far too many variables but approximately maybe but then the question is what would the approximation range be. My answer would be between "****in hell whit wis that? to Jesus I nearly s*** myself" scale range. Boom effin' boom in other words. First they ignore you, then they laugh at you, then they fight you, then they pretend to befriend you, then you win! YER BARD Link to comment Share on other sites More sharing options...
shaddypeekey Posted February 17, 2010 Share Posted February 17, 2010 Naw it isnae. Aye is an aye an aw the noo ye know. Run Silent, Run Deep... "Men who go to sea in Submarines are nothing but pirates in His Majesties uniform" Admiral of the Fleet Lord Jellicoe Link to comment Share on other sites More sharing options...
chris_mceleny Posted February 17, 2010 Share Posted February 17, 2010 scramton did this happen to you? i would imagine that would be an almighty bang! Link to comment Share on other sites More sharing options...
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