Abstract: An ornithopter which is propelled upwardly and forwardly by means of flapping wings, similar to the flight of a bird or bat. The power is supplied by a small engine that is mechanically-connected to a hydraulic pump which drives a single hydraulic cylinder and utilizes only the retraction stroke to power both wings simultaneously downwardly. The wings are brought back to the normal position by an elastic device, which in addition will not permit the wings to go beyond optimum positions. A double-acting hydralic cylinder is also provided to move the horizontal tail in an up and down motion. The operation of the wings can be automatic or manually-operated by the pilot. The rear legs and front support are constructed in such a manner that allows the ornithopter to rise and land vertically which permits takeoff and landing from most any type of terrain. The ornithopter can be assembled and disassembled quickly.

Abstract: Vehicle has wedge shaped frontal structure for urging the fluid through which it travels to pass solely along the vehicle side with minimal or zero turbulence. A visor on the structure further prevents the fluid contacting the front of the vehicle from flowing upwardly and across the vehicle's roof in turbulent fashion. The wedge may be placed above the driver enclosure, the forward vertical edge formed by the convergence of the wedge sides, being forwards of the driver enclosure.

Abstract: Turbine powered, self-propelled vehicles utilizing multiple electric motors in sets to comprise part of a novel modular electric powertrain drive system. This novel powertrain system is particularly applicable to larger weight class tracked military vehicles, such as an M-1 tank. However, other large or smaller weight class turbine powered vehicles, are candidates including both track and wheel driven types, as well as certain airborne type vehicles such as helicopters and ground-effect vehicles. The modular powertrain drive system hereof basically comprises a plurality of electric high speed drive motors and also of electrical power generator devices, such as alternators, arranged to be commonly driven by the turbine's effective output shaft.

Abstract: A bolt formed of two separate members, one of the members defining the shank and wrench-engagement portions of the bolt, the other member defining a work-engagement washer-flange surface. This two-member construction minimizes the amount of upsetting required to form the wrench-engagement portion of the bolt, with resulting reduction in total energy costs to form the bolt. The two-member construction provides other advantages, such as possible use of harder, higher tensile strength materials having improved wear characteristics, the elimination of a potential stress riser condition at the juncture of the shank and head portions, and possible use of different materials for the shank and head flange areas of the bolt.