Tuesday, January 3, 2012

Goals

* Safe - who doesn't want to keep all their fingers?
* non-DD - ease of use, ease of transfer, legality in all 50 states, reduces administrative hurdles
* Reliable - a life-safety device is useless if you can't rely on it
* Waterproof - Waterproof capsule allows for an environmentally stable package that can survive the launch and has on-station potential
* Durable - The camera capsule and recovery mechanism must be able to withstand initial shock delivered by wading that is hit by hot expanding gasses.
* Cheap - needs to be easily affordable by civilians
* Low Recoil - can be fired by small stature individuals, must not scare them into not wanting to fire it ever again, avoid injury to rescuers repeatedly firing the device throughout the day.
* Standard Hardware - Can be used from standard 37mm and 40mm launchers, system requires only shells and receivers. Using COTS allows for lower costs and for rapid development/prototyping.
* Altitude - Minimum useful height was calculated to be 70 feet. The intent was to be able to clear over trees in pine barrens as well as to clear 5 story buildings with a bit of room to spare in an urban environment.
Based on aerodynamics of camera package, weight, propellant charge, parachute and streamer the max achievable height was calculated to be in excess of 400yds, fired in an arc at 50 degree angle.
* Range - Based on current design max range was calculated to be around 600 yards, with no wind when fired in an arc at 50 degree angle.

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