On 22/10/2015 21:58, The Natural Philosopher wrote:
On 22/10/15 21:43, Vir Campestris wrote:
On 22/10/2015 14:31, NY wrote:
The valve blew off, shot through the ceiling and was found several miles
away just inside the perimeter fence of Heathrow by a routine security
patrol. The cylinder was pushed through the floor and buried itself in
the concrete floor below. No trace of the engineer was found.

That's very surprising. A range of several miles would imply the valve
was accelerated to supersonic speed within the few inches it was close
to the cylinder.


as most bullets are..

.... inside a carefully shaped cylinder. Which is usually several feet
long. Heck, even a 45 magnum pistol won't make Mach 2.

Andy