On 26/07/2018 11:46, GB wrote:
On 26/07/2018 11:38, Bert Coules wrote:
Tim,

Many thanks for your thoughts.Â* The collapse has to be pretty much
instant, so any release of pressure on an inflatable dummy would need
to take immediate effect or nearly so.

That means there will be a bang or very loud hiss/whoosh. It may be
better to settle or gradual but fast deflation.


Maybe a fan inflated body and reverse the fan to collapse it?