So far, the new nozzle designs have been tested in the laboratory with exhaust as hot as 1100 degrees Fahrenheit. The scale model jet engine used in testing is a scale version of the F-18 F404 engine.

New 40, 65 and 105 hp shallow-water propulsion. Courtesy Honda Marine. Jet outboards, like these new models from Honda, have long been favored by boaters who run in shallow, rocky rivers.From the ...

The new, patented, outboard propulsion system mates a reliable automotive engine with a high performance, large diameter, waterjet in a single, stand-alone unit. ... (10-in.) water jet.

The design can be used in turboshaft, turbojet and turbofan engines, says R-Jet. The company claims an OCN turboprop rated at 640shp (480kW) will have a thermal efficiency of 32%, compared with 23 ...