[Nicholas Rehm] works during the day at the Applied Physics Laboratory at Johns Hopkins, Maryland, so has considerable experience with a variety of UAV applications. The question arose about how the ...

Caves and natural structures were among the earliest shelters, offering protection from environmental elements and external threats. As human civilization evolved, so did these rudimentary residences ...

Reaction wheels are useful things, typically used by satellites to keep themselves oriented the right way up in space. Turning the reaction wheel creates an equal and opposite torque in the spacecraft ...

Underactuated mechanical systems arise naturally in many engineering applications due to design constraints, energy efficiency requirements, or actuator limitations. Typical examples include robotic ...