On Sat, Apr 12, 2014 at 4:37 PM, jim bell <jamesdbell9@yahoo.com> wrote:
art". A month ago, when it became obvious that finding Air Malaysia Flight 370 could be difficult, the 30-day limit of the electronic pingers got me to thinking. Why? Instead of pinging for 30 days, why not have them ping increasingly slowly, so that the pinger would last 'forever'. Considered
These boxes need to - record and store data - be tamper evident and monkey resistant - withstand being dive bombed into the side of a mountain, impaled by ragged airframe bits, signposts, etc at over mach 0.92 - deal with 100 story concrete and steel burning buildings falling on them - handle being frozen/quenched after a nice 600++ degF fire for an hour or so - float over, or, if attached to a bunch of scrap, sink to the bottom of, the Marianas without being crushed or infiltration water And for the transmitter model, have both high freq (ground, low power) and low freq (undersea, higher power; or acoustic) transmitters... you then want to add the impact mass / heat reactive carrying of enough tarmac float chargeable battery in the internal roll cage to last 'forever [1]' ... all at a cost an airline will buy? You've clearly got alien tech, let's make some money :) Better than trying to build and maintain single indestructible battle tanks is to distribute in the airframe a few cheap brick sized modules dedicated to locator beeping. Fan out duplicate recording streams to their flash memories. Let em run powered 24x7x365. And autopop a dozen more out the ass end like a roman candle if inflight do-not-exceed params are ever exceeded. This note constitutes prior art. [1] All batteries self discharge, current load saps more, physical distortion and heat are death. So let's say a couple months for low mass lithiums.