It's a strange one, how much it cost and how much it is worth are 2 different things.
I can't see it being worth £50 million to be honest, it may have cost £150m to develop and they have only built 3 uptill now, thus giving a newspaper headline grabbing figure of £50m each. But the unit price might be as little as £3m to put together.
I think a Chinnock costs around £8m (although might be way out there), so I just can't see it being true.
As for collecting it, some of these UAV's are bigger than the lancaster bomber from WWII, not sure how easy it would be to pick that up on a battlefield.
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The sun also says it had an engine "flame out" yet the Reaper is prop driven unmanned vehicle with pic next to the story. A flame out as far as I know can only happen on a jet engine, so that's a little strange to say the least. Never seen a jet powered unmanned vehicle before and not sure why they would really want one. Fuel efficeny for slow flying aircraft is much better with a prop. You only really need a jet when you get to heights where the air is much too thin, or if you need speed.
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They say it landed in one piece but personally can't see it. It won't have the electrical power to beam pics back to base when the engine goes out and pilot the craft. These things are lite as hell and won't be carrying more than a small battery.
As for the special forces going in, one can only imagine it was to collect the debris scattered over a few hundred meters from the crash and put it all in one big pile. Then I imagine the harrier can destroy eveything in one go. Otherwise the harrier couldn't be sure it would get everything incinerated.
All the best
GW