I dunno. Remember it's got wings, which means once it shifts into forward flight mode, the engines are used solely for propulsion and not for lift, which is vastly more efficient.
...shows it can be made to work, provided the thing has very low drag (I was using a battery specific energy of 200 for a LiPoly cell). Given it's a streamlined blob with stubby wings, that seems vaguely plausible.
Anyone with a better grasp of the principles want to comment?
Update: I found their tech page (see link upthread). They use lithium ion. They have about the same specific energy as lithium polymer.
Playing with the numbers here:
http://web.mit.edu/lochie/www/erange/main.html
...shows it can be made to work, provided the thing has very low drag (I was using a battery specific energy of 200 for a LiPoly cell). Given it's a streamlined blob with stubby wings, that seems vaguely plausible.
Anyone with a better grasp of the principles want to comment?
Update: I found their tech page (see link upthread). They use lithium ion. They have about the same specific energy as lithium polymer.