Various embodiments of space launch vehicle systems and associated methods of manufacture and use are disclosed herein. In some embodiments, the systems include a reusable, horizontal takeoff/horizontal landing (HTHL), ground-assisted single-stage-to-orbit (SSTO) spaceplane that is capable of providing frequent deliveries of people and/or cargo to Low Earth Orbit (LEO). In some embodiments, the spaceplane can takeoff with the aid of a rocket-powered sled that, in addition to providing additional thrust for takeoff, can also provide propellant for the spaceplane engines during the takeoff run so that the spaceplane launches with full propellant tanks.

Rocket propulsion systems and associated methods are disclosed. A representative system includes a combustion chamber having an inwardly-facing chamber wall enclosing a combustion zone. The chamber has a generally spherical shape and is exposed to the combustion zone. A propellant injector is coupled to the combustion chamber and has at least one fuel injector nozzle positioned to direct a flow of cooling fuel radially outwardly along the inwardly-facing chamber wall. In addition to or in lieu of the foregoing features, the injector can include an oxidizer piston and a fuel piston that deliver oxidizer and fuel, respectively, to the combustion chamber, in a sequenced manner so that the oxidizer is introduced prior to the fuel.

Rocket propulsion systems and associated methods are disclosed. A representative system includes a combustion chamber having an inwardly-facing chamber wall enclosing a combustion zone. The chamber has a generally spherical shape and is exposed to the combustion zone. A propellant injector is coupled to the combustion chamber and has at least one fuel injector nozzle positioned to direct a flow of cooling fuel radially outwardly along the inwardly-facing chamber wall. In addition to or in lieu of the foregoing features, the injector can include an oxidizer piston and a fuel piston that deliver oxidizer and fuel, respectively, to the combustion chamber, in a sequenced manner so that the oxidizer is introduced prior to the fuel.

Launch vehicles with ring-shaped external elements, and associated systems and methods are disclosed. An aerospace system in accordance with a particular embodiment includes a launch vehicle having a first end and a second end generally opposite the first end, with the launch vehicle being elongated along a vehicle axis extending between the first and second ends, and having an external, outwardly facing surface. The system can further include an annular element 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 can have 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 can be carried by the launch vehicle, and can have at least one nozzle 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.

A thermal control system may transfer energy (directly or after a delay) to a thrusting device that can be used to slow a reentry vehicle entering a gaseous atmosphere from orbit. The thermal control system may mitigate the heating of the vehicle by transferring heat generated by the viscous interaction between the vehicle and high-altitude portions of a planetary atmosphere to a working fluid. This working fluid may then be routed through and/or ejected through one or more nozzles aligned to produce thrust in a direction that opposes the forward motion of this vehicle. This counter thrust may help to slow the reentry vehicle and reduce the amount of kinetic energy that can be converted into thermal energy. The working fluid may also be stored to use for propulsion after the reentry vehicle slows below hypersonic velocities.

A thermal control system may transfer energy (directly or after a delay) to a thrusting device that can be used to slow a reentry vehicle entering a gaseous atmosphere from orbit. The thermal control system may mitigate the heating of the vehicle by transferring heat generated by the viscous interaction between the vehicle and high-altitude portions of a planetary atmosphere to a working fluid. This working fluid may then be routed through and/or ejected through one or more nozzles aligned to produce thrust in a direction that opposes the forward motion of this vehicle. This counter thrust may help to slow the reentry vehicle and reduce the amount of kinetic energy that can be converted into thermal energy. The working fluid may also be stored to use for propulsion after the reentry vehicle slows below hypersonic velocities.

A multi-layer shell structure for a vehicle and method of providing a multi-layer shell structure for a vehicle. The multi-layer structure includes a thermal protection system (TPS) layer, a structural layer connected to the TPS layer, and a high tensile fabric barrier layer bonded to the structural layer. Room-temperature-vulcanizing silicone may be used to bond the TPS layer to the structural layer and bond the high tensile fabric barrier layer to the structural layer. The high tensile fabric barrier layer may create a seal on the structural layer. The multi-layer shell structure may include inner shell enclosing a passenger and/or cargo compartment and an annulus between the inner shell and the high tensile fabric barrier layer. The high tensile fabric barrier layer may prohibit entry of gas into the annulus in the event a hole is created through a portion of the multi-layer shell structure.

A multi-layer shell structure for a vehicle and method of providing a multi-layer shell structure for a vehicle. The multi-layer structure includes a thermal protection system (TPS) layer, a structural layer connected to the TPS layer, and a high tensile fabric barrier layer bonded to the structural layer. Room-temperature-vulcanizing silicone may be used to bond the TPS layer to the structural layer and bond the high tensile fabric barrier layer to the structural layer. The high tensile fabric barrier layer may create a seal on the structural layer. The multi-layer shell structure may include inner shell enclosing a passenger and/or cargo compartment and an annulus between the inner shell and the high tensile fabric barrier layer. The high tensile fabric barrier layer may prohibit entry of gas into the annulus in the event a hole is created through a portion of the multi-layer shell structure.

The disclosure relates to space science and space transportation, in particular, to the area of commercial exploitation of outer space, and, namely—to the structure of multiple-mission geospatial transportation complex and method of operation thereof, based on the principle of non-rocket ‘planet surface to planned circular orbit’ payload insertion. A general planetary geospatial transportation complex, according to a first variant includes a general planetary vehicle encircling the planet along the line of the planet surface cross-section by the plane parallel to plane of the equator, fastened, on launch overpass of specified altitude, and represents a linear bearing structure encircling the planet, comprising pressure hull with the special endless linear flywheels, equipped with systems of magnetic and/or electromagnetic suspension and linear electromagnetic drives. For a general planetary geospatial transportation complex, it is distinctive that the present intended use is to solve the set of geospatial problems in industrial-scale volumes, for instance, for the purpose of relocation of ecologically harmful portion of earth-based manufacturing into near space and non-rocket space industrialization, as well as stabilization of the global climate.

The disclosure relates to space science and space transportation, in particular, to the area of commercial exploitation of outer space, and, namely—to the structure of multiple-mission geospatial transportation complex and method of operation thereof, based on the principle of non-rocket ‘planet surface to planned circular orbit’ payload insertion. A general planetary geospatial transportation complex, according to a first variant includes a general planetary vehicle encircling the planet along the line of the planet surface cross-section by the plane parallel to plane of the equator, fastened, on launch overpass of specified altitude, and represents a linear bearing structure encircling the planet, comprising pressure hull with the special endless linear flywheels, equipped with systems of magnetic and/or electromagnetic suspension and linear electromagnetic drives. For a general planetary geospatial transportation complex, it is distinctive that the present intended use is to solve the set of geospatial problems in industrial-scale volumes, for instance, for the purpose of relocation of ecologically harmful portion of earth-based manufacturing into near space and non-rocket space industrialization, as well as stabilization of the global climate.