US Pentagon Plans For a Spy Blimp

nloop writes "The Pentagon is intending to develop a new spy ship — a dirigible. At 65,000 feet it would provide a 10 year, solar power based, unblinkingly intricate and continuous view of the surface via radar surveillance. Because of its altitude it would be safe from surface-to-air missiles and most aircraft. A 1/3-scale prototype, now being designed, is 'known as ISIS, for Integrated Sensor Is the Structure, because the radar system will be built into the structure of the ship. ... 'If successful, the dirigible... could pave the way for a fleet of spy airships, military officials said.'"

Comments

As safe as a satellite...

[AliasMarlowe]

Comsidering that an F-15 successfully shot down (destroyed) a satellite which was orbiting 555km above the Earth, the assertion that a blimp would be safe from aircraft attack is demonstrable bunk.
http://en.wikipedia.org/wiki/F-15_Eagle#Operational_history
Moreover, a preproduction F-15 (the "Streak Eagle") in breaking its eighth time to altitude record, went from standstill on the ground to 98,425 feet (30 km) in 208 seconds, and coasted to 103,000 feet. Modern interceptors can reach such altitudes with little if any modification. 65,000 feet is within their normal operating capability.
http://www.nationalmuseum.af.mil/factsheets/factsheet.asp?id=621