This paper describes "Development of Hydrogen Turbine" which was sponsored by NEDO. The main result was the selection of optimum high efficiency cycle which goes beyond the target HHV 60%. This cycle was dervied from Dr. Jericha's cycle and modified to more efficiency cycle. 1/3 scaled 1^<st> vanes & blades and combustor were manufactured and tested under 1700℃. This result showed good verification. After this development we are now starting new project using the similar cycle which uses methane as a fuel instead of hydrogen. New project can be applied to real society earlier and give technical contribution to "Development of Hydrogen Turbine" in future.
