Spacecraft device with increased cargo capacities, and associated systems and methods
A representative spacecraft system includes a launch vehicle elongated along a launch vehicle axis and having at least one stage carrying a corresponding rocket engine. The representative system further includes an annular support structure carried by the at least one stage and positioned to support a cargo spacecraft having a service module and a cargo module. The cargo module of the cargo spacecraft is positioned along the launch vehicle axis in a direction distal from the support structure, and at least a portion of the service module of the cargo spacecraft positioned within an annulus of the support structure.
1. A spacecraft device, comprising:
an annular support structure fixedly coupleable to at least one stage of a launch vehicle that is elongated along a launch vehicle axis, the annular support structure being positionable to releasably support a cargo spacecraft, the cargo spacecraft having:
a propulsion section, and
a cargo section consisting of cargo or configured to carry cargo, with the cargo section of the cargo spacecraft positionable along the launch vehicle axis in a direction distal from the annular support structure, and with at least a portion of the cargo spacecraft positionable within an annulus of the annular support structure; and
wherein the annular support structure is configured to remain carried by the at least one stage when the cargo spacecraft separates from the launch vehicle.
2. The device of claim 1 wherein the at least a portion of the cargo spacecraft positionable within the annulus includes the propulsion section.
3. The device of claim 1 wherein the annular support structure includes a cylinder.
4. The device of claim 1 wherein the annular support structure includes at least one strut positioned around the annulus.
5. The device of claim 1 wherein the annular support structure includes a plurality of struts positioned around the annulus.
6. The device of claim 1 wherein the annular support structure includes separation structures positioned to releasably engage the cargo section of the cargo spacecraft.
7. A spacecraft system, comprising:
an annular support structure according to claim 1 ; and
a cargo spacecraft.
8. The device of claim 7 wherein the propulsion section of the cargo spacecraft is at least partially suspended from at least one of the cargo section or the annular support structure.
9. The device of claim 7 wherein the propulsion section of the cargo spacecraft carries at least one of: a guidance system, a navigation system, a control system, a solar power system, and/or a communications system.
10. The device of claim 7 wherein the cargo section of the cargo spacecraft is configured to carry human cargo.
11. The device of claim 7 wherein the cargo section of the cargo spacecraft is configured to carry non-human cargo.
12. The device of claim 7 , further comprising a supplemental supply support carried by, and extending radially outwardly from, the cargo section, the supplemental supply support being positioned along the launch vehicle axis in a direction distal from the annular support structure to transmit loads along the load path from the cargo section to the at least one stage and around the propulsion section.
13. The device of claim 12 , further comprising a supplemental cargo section carried by the supplemental supply support.
14. The device of claim 13 wherein the supplemental cargo section is operatively coupled to the propulsion section.
15. The device of claim 14 wherein the supplemental cargo section includes a power supply for the propulsion section.
16. The device of claim 13 wherein the supplemental cargo section is operatively independent of the propulsion section.
17. A method for making a spacecraft device, comprising:
forming an annular support structure having an annular opening positioned to receive at least a portion of a cargo spacecraft; and
attaching to the annular support structure a separation element configured to releasably attach to the cargo spacecraft at a position on the cargo spacecraft that suspends the at least a portion of the cargo spacecraft in the annular opening,
wherein the annular support structure is configured to remain attached to a launch vehicle when the cargo spacecraft separates from the launch vehicle.
18. The method of claim 17 wherein the support structure includes a first portion connectable to the launch vehicle, and a second portion connected to the first portion, wherein the second portion carries the separation element.
19. The method of claim 18 wherein the first portion has a truncated cone shape and the second portion is cylindrical.
20. The method of claim 17 wherein the annular support structure includes a plurality of struts.
21. The method of claim 17 , further comprising attaching the annular support structure to the cargo spacecraft.