摘要:
Launch vehicles (1400) with ring-shaped external elements (1480), and associated systems and methods are disclosed. An aerospace system in accordance with a particular embodiment includes a launch vehicle (1400) having a first end and a second end generally opposite the first end, with the launch vehicle being elongated along a vehicle axis (V) extending between the first and second ends, and having an external, outwardly facing surface. The system further includes an annular element (1480) carried by the launch vehicle, the annular element having an external, inwardly-facing surface radially spaced apart from, and extending at least partially circumferentially around, the vehicle axis. The annular element has a first edge surface facing a first direction along the vehicle axis, and a second edge surface facing a second direction along the vehicle axis, the second direction being opposite the first direction. A propulsion system is carried by the launch vehicle, and has at least one nozzle (1411) positioned toward the first end of the vehicle to launch the vehicle. A controller can be in communication with the launch vehicle and programmed to direct the vehicle in the first direction during vehicle ascent, and in the second direction during vehicle descent.
摘要:
Launch vehicle systems and methods for landing and recovering a booster stage and/or other portions thereof on a platform at sea or on another body of water are disclosed. In one embodiment, a reusable space launch vehicle is launched from a coastal launch site in a trajectory over water. After booster engine cutoff and upper stage separation, the booster stage reenters the earth's atmosphere in a tail-first orientation. The booster engines are then restarted and the booster stage performs a vertical powered landing on the deck of a pre-positioned sea-going platform. In one embodiment, bidirectional aerodynamic control surfaces control the trajectory of the booster stage as it glides through the earth's atmosphere toward the sea-going platform. The sea-going platform can broadcast its real-time position to the booster stage so that the booster stage can compensate for errors in the position of the sea-going platform due to current drift and/or other factors. After landing, the sea-going platform can be towed by, e.g., a tug, or it can use its own propulsion system, to transport the booster stage back to the coastal launch site or other site for reconditioning and reuse. In another embodiment, the booster stage can be transferred to another vessel for transport. In still further embodiments, the booster can be refurbished while in transit from a sea-based or other landing site.
摘要:
Inflatable rings for supporting friction welding workpieces, and associated systems and methods. A support assembly (874) for joining multiple workpieces in a representative embodiment includes two drive rings (875), each carried by a corresponding drive ring carriage (876). Each drive ring (875) can include a generally cylindrical body (890) carrying one or more inflatable members (880) that extend around some or all of the circumference of the region enclosed by the drive ring (875). Each of the inflatable members (880) can be inflated with a suitable fluid (e.g., a gas or liquid) so as to expand radially inwardly (as indicated by arrows I) to engage the outer circumference, periphery or other outwardly-facing surface of a workpiece.
摘要:
Launch vehicles with fixed and deployable deceleration surfaces and associated systems and methods are disclosed. A system in accordance with a particular embodiment includes a launch vehicle that has a first end and a second end generally opposite the first end, and is elongated along a vehicle axis extending between the first and second ends. The vehicle carries an exposed outwardly facing surface having a first region positioned or positionable to have a first cross-sectional area generally normal to the vehicle axis toward the first end of the vehicle, and a second region positioned or positionable to have a second cross-sectional area generally normal to the vehicle axis toward the second end of the vehicle. The system can further include a propulsion system carried by the launch vehicle and having at least one nozzle positioned toward the first end of the vehicle to launch the launch vehicle.
摘要:
Modular friction welding heads and associated systems and methods are disclosed herein. A friction welding system in accordance with a particular embodiment includes a carrier fixture positioned to carry a workpiece, a head support positioned proximate to the carrier fixture, and a modular friction welding head releasably carried by the head support. At least one of the carrier fixture and the head support can have a guide structure with a constrained motion path positioned to guide relative motion between the modular friction welding head and the carrier fixture. A controller can be operatively coupled to the modular friction welding head and programmed with instructions to control the operation of the friction welding head.
摘要:
Launch vehicles with fixed and deployable deceleration surfaces and associated systems and methods are disclosed. A system in accordance with a particular embodiment includes a launch vehicle that has a first end and a second end generally opposite the first end, and is elongated along a vehicle axis extending between the first and second ends. The vehicle carries an exposed outwardly facing surface having a first region positioned or positionable to have a first cross-sectional area generally normal to the vehicle axis toward the first end of the vehicle, and a second region positioned or positionable to have a second cross-sectional area generally normal to the vehicle axis toward the second end of the vehicle. The first cross-sectional area is less than the second cross-sectional area. The system can further include a propulsion system carried by the launch vehicle and having at least one nozzle positioned toward the first end of the vehicle to launch the launch vehicle. In a further particular embodiment, the exposed surface can include a deployable flare surface that is positioned toward the forward section of the vehicle and is stowed during an ascent phase of the vehicle. During descent, the deployable flare surface can pivot outwardly to slow the vehicle down for a tail-down landing. Systems is accordance with other embodiments include launch vehicles with fuel tanks shaped to control the motion of the center of gravity of fuel in the tanks as the fuel level in the tank changes.
摘要:
Launch vehicles (1400) with ring-shaped external elements (1480), and associated systems and methods are disclosed. An aerospace system in accordance with a particular embodiment includes a launch vehicle (1400) having a first end and a second end generally opposite the first end, with the launch vehicle being elongated along a vehicle axis (V) extending between the first and second ends, and having an external, outwardly facing surface. The system further includes an annular element (1480) carried by the launch vehicle, the annular element having an external, inwardly-facing surface radially spaced apart from, and extending at least partially circumferentially around, the vehicle axis. The annular element has a first edge surface facing a first direction along the vehicle axis, and a second edge surface facing a second direction along the vehicle axis, the second direction being opposite the first direction. A propulsion system is carried by the launch vehicle, and has at least one nozzle (1411) positioned toward the first end of the vehicle to launch the vehicle. A controller can be in communication with the launch vehicle and programmed to direct the vehicle in the first direction during vehicle ascent, and in the second direction during vehicle descent.