Showing papers on "Ram air turbine published in 1975"

Energy storage system

Abstract: A system and apparatus for the storage of energy generated by natural elements. Energy from natural elements such as from the sun, wind, tide, waves, and the like, is converted into potential energy in the form of air under pressure which is stored in a large, subterranean cell. Machines of known types such as windmills are driven by natural elements to operate air compressors. Air compressors pump the air under pressure to the storage cell. Air entering the storage cell displaces water from the cell which returns to a water reservoir as an ocean or a lake. Water locks the air in the storage cell. The stored compressed air is available upon demand to perform a work function as driving an air turbine to operate an electric generator.

Electronic fuel control for a gas turbine engine

Abstract: An electronic fuel control for a gas turbine engine having a gas generator and a separate power turbine includes gas generator and power turbine actual speed transducers, gas generator and power turbine desired speed signal generators, error amplifiers connected to the respective transducers and generators, a "low wins" gate for selecting the lower error, an acceleration control limiter passing the selected signal from the gate to an integrator and an output difference amplifier producing an output signal determined by the difference between the integrator output and that of the gas generator transducer to control the fuel flow to the engine.

Electric power generating system

Abstract: A plurality of base members are seated on an ocean bed adjacent the shore and they support at their shore ends normally expanded compression cylinders provided with fluid inlets and outlets controlled by check valves. The outlets are connected by conduits with the inlet of a turbine that is operatively connected with an electric generator. Rigid pressure plates are disposed above the base members and the cylinders thereon and are inclined downwardly from their shore ends to their opposite ends, where they are hinged to the off-shore ends of the base members. Waves passing over the pressure plates will force their upper ends down to compress the cylinders to force fluid through the conduits to the turbine, after which spring means will expand the cylinders and raise the pressure plates. The base members are located in such positions on the ocean bed that the pressure plates will be depressed in succession to provide substantially constant flow of fluid to the turbine. The turbine can be a water turbine alone, or there can be both a water turbine and an air turbine.

Solar energy device

Abstract: A solar energy powered hot air turbine comprising a heat collector having an air inlet and outlet with the turbine connected to the air inlet. The heat collector is heated by solar energy and is constructed so that the hot air exhausts through the air outlet thus sucking air in through the air inlet to power the turbine.

Generation of electrical power using sea wave action - involves converging channel and wave chamber displacing air to drive turbine

Abstract: Sea waves are amplified in a converging channel that leads to an opening in a cylindrical pressure chamber. The pressure chamber has a conical top section leading to a housing containing an air turbine and generator. Sea wave motion produces standing waves of considerable energy within the pressure chamber. The standing wave motion results in pulsating air flow across the turbine. Vent apertures in the top side of the turbine housing permit the necessary air flow to occur. Guide blades combine with the runner wheel to allow air expansion to occur so as to produce rotational motion of the generator driveshaft.

Method for starting a gas turbine plant with an air accumulator

Abstract: A method for starting up a gas turbine system by means of compressed air delivered from an air-storage chamber and wherein the turbine system is comprised of high and low pressure turbines operating on a common shaft, there being high and low pressure combustion chambers respectively preceding the high and low pressure turbines, and an electrical generator connectible to the turbine shaft through coupling means which serves as the load for the turbine system. The method involves feeding compressed air from the storage chamber through the turbines to accelerate them to normal operating speed, igniting the high-pressure combustion chamber during acceleration of the turbines but with a low fuel input, then coupling the generator to the turbine shaft, then igniting the low-pressure combustion chamber, then increasing the pressure at the high-pressure combustion chamber to the full operating pressure to increase the air flow to an amount greater than that normally maintained during the operating period of the turbine system, then increasing the admission temperature of the air to the low-pressure turbine until the full output of the turbine has been reached, and simultaneously increasing the admission temperature of the air to the high-pressure turbine until its full operating temperature has been reached.

Solvent pumping system

Abstract: This liquid recirculation system is particularly suitable for flammable solvents since the liquid is pumped by an air powered pump. The system has a solvent tank with a sink mounted on top of it for drainage into the tank. A centrifugal liquid pump is immersed below the liquid level in the tank for pumping liquid to a spout over the sink. A centrifugal air turbine is mounted above the liquid level for driving the pump. The liquid pump and air turbine have identical housings at opposite ends of a tubular housing. A drive shaft mounted in bushings or bearings at the ends of the tubular housing connects impellers in the turbine and pump. Each impeller is a flat disk with a plurality of flat upstanding blades with a substantially larger number of blades on the turbine impeller than on the pump impeller. Air enters the turbine tangentially and is discharged through an outlet on the top of the turbine. Liquid enters the pump through an opening on the bottom of the pump and is discharged through a tangential outlet extending in the same sense of rotation as the air inlet on the turbine.

Suction power-driven air turbine

Abstract: An engine which includes a combustion chamber and a work function chamber enclosing the combustion chamber. A burner means is located in the combustion chamber for combustion. A rotatable turbine wheel is further mounted in an inlet of the work function chamber with one side of the blades in communication with the ambient atmosphere and the other side in communication with the interior of the work function chamber. The products of combustion are rapidly cooled and continuously removed from the combustion chamber by an exhaust means of the venturi type. This serves to create a pressure differential and provide a continuous stream of high velocity airflow against and through the blades of the turbine, through the work function chamber and out through the exhaust means. In this manner, a rapid rotative movement is provided for the turbine wheel and power output is taken from it and from the output shaft on which it is mounted. In one modification of the invention a pair of opposed turbine wheels are used in a manner to double the power output.

Air turbine assembly for dental drills

Abstract: Air turbine assembly for dental drills has ball bearing races lubricated by grease injected into spindle socket used to hold drill shanks

Solar-heated-air turbine generating systems

Abstract: The feasibility of large-scale solar electrical power generation using open cycle heated air turbines in conjunction with a tower-mounted, pressurized, central receiver/heliostat system is investigated. Such a system requires no cooling towers and may be sited away from cooling water supplies. A regenerative open cycle/solar gas turbine approach is chosen since it offers higher overall thermal efficiency than a simple cycle and because peak efficiency is achieved at a pressure ratio of about 4 to 1; which minimizes design considerations of the pressurized receiver. The feasibility of the heated air receiver is demonstrated, and structural design, heat transfer and efficiency aspects of a windowless cavity receiver which provides 1800/sup 0/F heated air are discussed. The capabilities of the M.I.T. Lincoln Laboratory solar simulator and the U.S. Army 35 kW thermal W.S.M.R. and the 1000 kW thermal C.N.R.S. solar furnaces for testing heated air receivers are explored. It is concluded that a central receiver solar thermal heated air gas turbine power plant is feasible and that future efforts should be directed at the development of the most effective receiver possible in order to minimize heliostat collector field area and system cost.

Centrifuge and press for compressing used containers - has air turbine and self acting pneumatic ram

Abstract: The centrifuge is provided with radially extending frames to support the used oil containers. The nozzle pipe directs a stream of air against the turbine blades driving the centrifuge at high speed which ejects the oil remaining in the used containers which are then placed between the plate and the plate mounted on the piston rod of the pneumatic ram which also serves as a base for the centrifuge. The used containers are crushed flat and plastic containers have a T-shaped slot cut by the blade so that opposite sides can be hooked together to ensure that the container remains in the compressed state.

Auxiliary turbine for aircraft - fuelled by gas generated in situ from aircraft fuel

Abstract: In a method for starting up power units and operating auxiliary equipment in aircraft, using an auxiliary turbine driven by fuel gas produced in a gas generator from aircraft fuel hypergolised with a fuel component, pref. unsymmetrical dimethyl hydrazine, by reacting with an oxidiser, pref. HNO3 or N2O4, as in parent patent, the fuel gas is used for starting up an auxiliary turbine, and the exhaust gases of this auxiliary turbine are used for preheating or vaporising the aircraft fuel.