"This invention has for its object to effect improvements in turbine installations so as to make them specially suitable to the propulsion of torpedoes, where it is desired to have a simple plant working from stored energy not only contained in the combustible, but also in the form of compressed air, compressed gas, liquid air or gas, or a compound such as slow burning powders and the like, which are capable of giving off heat energy without the employment of oxygen derived from the external air."