Editing Pulsejet (section)

=== Wave ===
J-1 is a u-shaped device designed for UAVs with up to 200-lb (90-kg) gross vehicle weight. It weighs 18 lb (8.2 kg) and measures 5.5 x 12.5 x 64 inches (14 x 32 x 163 cm). It can run on fuels such as gasoline, E85 bioethanol, or jet fuel. Its thrust reaches up to {{Convert|55|lbf||abbr=on}}. When fuel ignites, the increased temperature and pressure push hot gasses out of the device, creating thrust. The resulting partial vacuum pulls in fresh air, preparing for the next pulse.<ref name=":02" /> The engine family has been tested at up to {{Convert|200|mph|abbr=on}}.<ref name=":02" />

Wave is working on a second engine, the K-1, with up to {{Convert|220|lbf|abbr=on}} of thrust for up to {{Convert|1000|lb|abbr=on}}. It claims that this will benefit larger commercial applications and a new class of [[VTOL]].