- There has been a big bang in Swindon
It was mentioned at the end of the BBC local news. I’m fifteen miles away, so can’t say I noticed. Lyneham’s closed, so can’t be from there.Posted 6 years ago
Maybe someone’s finally got tired of the crappy town centre and gone for some instant urban renewal, structure-hitting all the big buildings simultaneously. 😈
Just looking on Twitter, and it appears that it was heard from Malmesbury up as far as Coventry and Leamington Spa, shook doors and windows in Coventry. May have heard something in Chippenham, but indoors and had the telly on, so could easily have mistaken it for an empty trailer behind an artic banging on a pothole at the top of the road, often happens.Posted 6 years ago
Page last updated at 19:38 GMT+01:00, Thursday, 12 April 2012
Loud bang was Typhoon sonic boom
A loud bang which sparked a deluge of calls to emergency services across a large part of England was a sonic boom from a Typhoon aircraft, the MoD said.
Mystified residents across the West Midlands, Warwickshire, Oxfordshire, Somerset and Wiltshire reported hearing a loud boom at about 18:10 BST.
The MoD revealed it was from a Typhoon responding to an emergency call.
A Coventry resident said: “I thought somebody had thrown a brick through the window.”
The Ministry of Defence initially said it was investigating what was behind a loud noise in Oxfordshire but a spokesman later confirmed it was from one of two RAF Typhoons that had been launched following an emergency call from a helicopter.
The helicopter had transmitted on the wrong frequency, he said.
Warwickshire Fire and Rescue Service had also said it was looking into what caused the noise, after a flood of calls.
Some of those who heard it said the sound lasted a few seconds.
The British Geological Survey had also said it was investigating the incident.
There were reports of the noise being heard in Bath, Swindon, Coventry, Rugby and Oxford.
BBC © 2012Posted 6 years ago
dirtbiker100 – Member
Does a sonic boom occur once when you pass through the sound barrier? So the plane was speeding up and slowing down through the sound barrier constantly?
No. It’s air compressed by the plane exceeding Mach 1, the noise follows the aircraft along its flight path so long as it’s transonic, just think of it as a cone of noise expanding behind and travelling with the plane, so it will be heard as a series of bangs by successive people as it passes over, and the noise ‘cone’ expands outwards.Posted 6 years ago
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