Thames kosmos air water power thames kosmos 555001 p build your own models powered by air and water pressure to learn about the laws of physics p p this unique kit allows you to build two different air and water powered systems water jet propelled cars and hydro pneumo which simply means air pressure and water pressure powered engines the hydro pneumo system uses a self contained air and water turbine system as a motor p p construct 15 models including a truck excavator radar c