Abstract:
A novel concept for a propeller blade configuration incorporates the model of the natural wave behavior. The leading edge (3) of the propeller blade has a convex segment (8) followed by a concave segment (6), as seen in a plan view. The leading (3) and trailing (4) edges are rounded so as to promote proper fluid sheet formation along the flat surfaces and to reduce undesirable vortice formation. Best results are obtained by modeling the surfaces along a sine or tangent function.
Abstract:
A combustion engine includes a combustion chamber without pistons, wherein combusted and expanded air exiting the combustion chamber flows into a first displacement pump, such as a gear pump or radial vane pump. The displacement pump dnves the load, and, in addition, another smaller second displacement pump, which pressurizes fresh air and introduces same, via a feedback loop, into the combustion chamber. Gas or other burnable fuels are introduced in the combustion chamber, so that continuous fuel burning will occur, after being ignited. The ratio of bigger to the larger pump to the smaller pump is influenced by the percentage of expansion of the air in the combustion chamber. Additional embodiments could include spπng loaded adjustable baffles within the chamber, meandenng walls and protrusions in the feedback loop, and heating the air prior to entry into the feedback loop.
Abstract:
The fluid displacement pump enables substantially continuous pumping from a low-pressure side to a high-pressure side substantially without any backflow or backpressure pulsations. Liquid or gas is injected to the high-pressure side by way of mutually intertwined worm spindles that form a fluidtight displacement system. The blades (9A, 9B) of the impeller system are slightly curved from the inside out, i.e., from their axles (31) to their periphery, so as to ensure a tight seal between adjacent blades. The orientation of the blades is almost flat, i.e., their attack angle relative to backpressure is close to perpendicular so that they will turn quite freely in the forward direction, but will not be turned backwards by a pressurized backflow. The impeller rotation that is introduced via the spindle shafts (31) nevertheless leads to a volume displacement towards the high-pressure side, for instance, towards a chamber to be pressurized or to be subjected to equal pressure.