I remembered Barnes Wallace having a similar problem releasing the bouncing bomb at the correct altitude, so i purchased a copy of Dambusters on video.
All I need is two torches a roll of selotape a photocell,a relay and a steady camera helmet.
The two torches are fastened
to the helmet at a preset angle of 30 degrees, and switched on prior to departure
from the aircraft.
The photocell is fixed
and pointed in a forward direction between the two torches.
As i fall to earth, the
two beams (circles) of light will converge at a point on the deck at a very
accurate pre-determined altitude.
The photocell will sense the two circles of light at convergence point, operate a relay releasing the conopy.
This is where you experts come in, what is the lowest altitude you can deploy a canopy and survive?
prepared to break the odd leg for the record.
And don't be pussying around
at 200ft. Its Grounddiver we are talking about here.