The U.S. Army has also developed and built on a large scale small portable Tesla Turbines for their Soldier and Sensor Power Program. These portable units provide electrical power for a soldiers' personal electrical devices and are 15 times more effective than comparable battery units.
On a larger scale, Phoenix Navigation and Guidance Inc. (PNGinc), located in Munising, Michigan have developed a Tesla Turbine using new materials such as Kevlar, carbon fibers and titanium which generates 18,000 rpm and delivers over 130 horsepower. The engine contains 29 discs, each disc being 10 inches (25.4 cm) in diameter and uses pulse detonation combustion to produce very high efficiencies in engineering terms.
Tesla Turbine Horsepower
To give you some perspective, a Toyota Prius produces around 70-100 hp while a larger vehicle such as the 2012 Shelby GT500 Super Snake will be available with an upgrade kit enabling it to produce up to 800 horsepower!
The earliest Tesla Turbines, made by Tesla himself were very efficient. A small hand held prototype produced well over 10 hp. More recently, the PNGinc model, mentioned above, produces 130 hp while the largest known turbine ever built generated over 10,000 hp!