| Top US air force officials are working on a strategy to put spy planes in near space - the no man's land above 65,000 feet, but below an outer space orbit. If successfully developed, the aircraft could play a vital role in surveillance over trouble spots such as Iraq. Air force chief of staff General John Jumper said on Tuesday that he would meet next week with the head of Air Force Space Command, General Lance Lord, to map out plans to get lighter-than-air vehicles into near space. Jumper said the air force was working with the Defence Advanced Research Projects Agency (DARPA) to develop a stealthy aircraft without metal that could be equipped with special sensors and remain in the air for months at a time. That would help meet the demand for persistent surveillance, which is difficult with current satellites which circle the Earth in orbit at altitudes above 300km. |