"By crossing airships with airplanes, Solar Ship is planning to build a craft that can carry heavy loads long distances with a tiny carbon footprint. Filled with helium, they soak up rays from the sun to provide the energy for forward motion and fulfill its original design challenge – carry 1,000 kilograms (2,205 lbs) of payload 1,000 kilometers (621.4 miles). The craft is heavier than air,…

Hi,

Tired of cutting your fingers during the testing stage of your quad.

Then make some thin cardboard short propellers.Your fingers will thank…

What do you think about making a variable pitch quad  with Trex 600 tail rotor assambly parts.

It's using a outrunner motor and a servo for each 70cm blade.

It's also for sale(around 400$)…

The Buran spacecraft (Russian: Бура́н, IPA: …

The second Boeing-built X-37B Orbital Test Vehicle, or OTV, left Cape Canaveral, Fla., at 2:46 p.m. PT, atop an Atlas V rocket, Boeing said.

"History was made in December when the X-37B became the United States' first unmanned vehicle to return from space and land on its own," Craig Cooning, vice president and general manager of Boeing Space and Intelligence…