pump with hydraulic fluid, as the rotor design is significantly different. no prototype of this variation has been demonstrated. Two-port without carriages This third design combines aspects of the first two. this design is conceptual only. It has not been built, but is used for purposes of illustration. If built it would not support photo-detonation. Many other designs are possible within the patented Quasiturbine model, with or without carriages and with differing numbers of ports. , which design will be used for further work on the internal combustion version has not been announced. History Prof. J. Ignacio Martínez-Artajo (1907-1984) from Universidad Pontificia Comillas (Madrid, Spain) made sketches of an adaptative rotary compressor in the mid seventies, which led to the construction of a railway model missing of proper rotor dynamic solutions. Lately, research was conducted by Dr. Gilles Saint-Hilaire, a thermonuclear physicist, and members of his immediate family. The original objective was to make a turbo-shaft turbine engine where the compressor portion and the power portion would be in the same plane. In order to achieve this they had to disconnect the blades from the main shaft, chain them around in such a way that a single rotor acts as a compressor for a quarter turn and as an engine for the following quarter of a turn. The general concept of the Quasiturbine engine was first patented in 1996. Small pneumatic and steam units are available from the patent holders for sale or hire for research, academic training and industrial demonstration, as is a book (largely in French) describing the concepts and development of the design. Demonstrations have been undertaken on an Air Gokart in 2004, on “APUQ Air Car” in 2005, on the University of Connecticut “Brash Steam Car” in 2010, and other products (Chainsaw and generator). The patent holders have announced that they intend to make similar internal combustion prototypes available for demonstration. See also Compressed air vehicle References External links Quasiturbine official site. How Quasiturbine Engines Work from HowStuffWorks. University of Connecticut “Brash Steam Car” Video. Quasiturbine entry on INIS at International Atomic Energy Agency. 2006 Pneumatic Demo Quasiturbine Chainsaw. 2011 Oregon Steam-up Demo Quasiturbine Steam. Engine technology s Steam power Pumps