AI
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Wednesday, May 09, 2012 9:57:53 AM
Maybe they have a parachute on the end of the tether so it floats down. 
Or if it's used on the border, the cable would likely land on all those illegal immigrants crossing the border, and would be cushioned in the fall.
I'm thinking about higher payload vs reduced time on station trade-offs. With the airship acting as an aerostat with surveillance payload attached, which has been limited thus far to about 30 pounds, the tether also adds weight that would be compensated for by adding additional helium (and therefore less fuelgas).
Seems to me if the tether is released and the airship begins free flight, some helium would needed to be bled off to maintain neutral bouancy, since the weight of the tether is no longer a factor and the airship would become significantly lighter.
Anyone have any idea what a power-providing tether would weigh per thousand feet of length?
Or if it's used on the border, the cable would likely land on all those illegal immigrants crossing the border, and would be cushioned in the fall. I'm thinking about higher payload vs reduced time on station trade-offs. With the airship acting as an aerostat with surveillance payload attached, which has been limited thus far to about 30 pounds, the tether also adds weight that would be compensated for by adding additional helium (and therefore less fuelgas).
Seems to me if the tether is released and the airship begins free flight, some helium would needed to be bled off to maintain neutral bouancy, since the weight of the tether is no longer a factor and the airship would become significantly lighter.
Anyone have any idea what a power-providing tether would weigh per thousand feet of length?
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