A liquid level measurement system includes a liquid receptacle including a side wall and a guided wave sensor array coupled to the wall. The guided wave sensor array is configured and adapted to emit induced guided waves. A method for detecting a liquid le...

In accordance with at least one aspect of this disclosure, a fuel quantity measurement system includes, one or more pressure sensors are configured to operatively connect external to a fuel volume of a fuel tank, and can be operative to sense and output a ...

A power system (10) includes a first energy harvester (14), a second energy harvester (16), a power conditioning unit (18), and a load (12). The first energy harvester (14) is configured to produce a first voltage. The second energy harvester (16) is confi...

An aircraft sensor system including a primary module (350) configured to be attached to an aircraft portion and operative to transmit electrical power wirelessly. A secondary module (300) configured to be attached to an aircraft component (10), the seconda...