A new steam engine cycle for marine propulsion - the water pulsejet - is described. The engine has no moving parts, in its simplest embodiment, and has its antecedents in a toy which was widely sold in the twenties and thirties. The working fluid is the water through which the boat moves, and the Rankine cycle functions of boiling at high pressure, expansion, and then condensing at low pressure are all performed dynamically in one tube, with the water acting as the piston. Efficiency should increase with increasing size, and the efficiency of large pulsejets should be comparable with the state-of-the-art in marine propulsion. The cycle can also be employed as a pump or to produce shaft power; of these, only the pump has so far been reduced to practice.

Media Info

  • Features: References;
  • Pagination: p. 1107-16

Subject/Index Terms

Filing Info

  • Accession Number: 00072923
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: Paper No. 749153 Proceeding
  • Files: TRIS
  • Created Date: Apr 22 1975 12:00AM