摘要:
A two-stage wingless reusable aerospace vehicle having upper and lower stages that take off from a take-off area and separate at a separation point along a first trajectory. The separation forces are generated by air retained between the upper and lower stages, which is at a pressure higher than ambient pressure at the separation point. The lower stage is then propelled along a return trajectory to a landing area. After separation from the lower stage, the upper stage continues to an Earth orbit for deployment of a payload. After deploying the payload, the upper stage moves out of the Earth orbit, re-enters the Earth's atmosphere, and returns to the take-off and landing area. The upper and lower stages are powered by liquid oxygen and kerosene engines. The aerospace vehicle is transported to a take-off area by a transport vehicle having a first fixed carriage and a second translatable carriage that is adapted to move the upper stage relative to the lower stage for assembly of the aerospace vehicle while in the horizontal position. The transport vehicle then pivots the aerospace vehicle from the horizontal to the vertical position for launching.
摘要:
An orbital vehicle (34) having a propulsion module (33) and a logistics module (36). The logistics module includes a generally cylindrical outer shell (56, 541, 542) with first and second ends. An openable cover (58) is coupled with the outer shell at the first end, thereby providing access to the interior of the logistics module. The second end is adapted to couple to the propulsion module. A cargo container (54) is disposed generally within the outer shell, the cargo container including a berthing mechanism (70) disposed to be accessible when the cover is opened. A retractable grapple fixture (176) is provided on the logistics module, selectively positionable between an extended position and a retracted position. When the grapple fixture is in the extended position a grapple shaft (78) can be accessed to secure the orbital vehicle. When the grapple fixture is retracted, it is enclosed within the orbital vehicle.
摘要:
The swirler for the fuel nozzle of the combustor of a gas turbine engine in engine designs where the swirler is off set from the center line of the combustor, localized erosion is obviated by locating and angling air cooling holes around the air swirler body to for flowing the cooling air uniformly along the body surface from bottom up to the tip of the swirler.
摘要:
An epoxy-encased wound capacitor suitable for being surface mounted and wave soldered to electronic circuitry, e.g. circuit boards and process for making the epoxy-encased wound capacitor. The wound capacitor is formed from winding together lengths of two bilaminar ribbons. The capacitor is then cured by exposing it to ultrasonic energy according to a predefined ultrasonic profile while at substantially the same time, mechanically pressing the capacitor. Contacts are formed on the capacitor and wire leads attached. Subsequently, the capacitor is placed in a flexible, reusable plastic mold featuring lead guides for precisely spacing the leads of the capacitor. Bubble-free epoxy is poured in the molds and heat cured. The epoxy-encased capacitor, suitable for surface mounting and wave soldering, is then removed from the mold.
摘要:
A socket assembly for a trailer hitch includes a ball clamp member which has lateral arms or wings that limit the pivotal movement of the ball clamp member thereby improving the opportunity for the ball to properly fit in and totally seat within the cavity defined within the socket assembly.
摘要:
An improved patient chair includes a seat section, a pivotally attached back support and a removably attached leg support. A manually actuated camming mechanism permits adjustment of the back support between a prone position and a seated position. The leg support is detachable from the seat section to facilitate use of the patient chair construction as a chair.
摘要:
The inner and outer diameter of the flange of a snap ring are oriented relative to each other and the adjacent cases to which it is attached serve to support the high pressure turbine vanes of a gas turbine engine to maintain concentricity between the turbine rotor and stator.
摘要:
The bathing tub assembly includes a removable side wall panel which is slidably engageable with a slot along the edge of an opening through the side wall of the tub. A special seal construction for the panel edge and slot prevents leakage of the contents of the tub through the slot.
摘要:
System for guiding articles along a path, consisting of a rail with a metal core and a sheath of polymer material surrounding it, the sheath being formed to provide a generally cylindrical surface facing toward the path and to provide an opposite surface adapted to be used in clamping the rail in a selected position.