Stacked satellite assemblies and related methods
A satellite apparatus is disclosed, including a housing having first and second opposing walls, and a support structure inside the housing spanning the first and second walls. The support structure is structurally connected to the housing only at the first and second walls, and an end portion of the support structure is configured for connection to a launch vehicle by a separation system.
1. A first satellite apparatus, comprising:
a housing including an opposing fore wall and aft wall and four side walls spanning between the fore wall and aft wall, and
a support structure spanning the fore wall and aft wall and enclosed by the four side walls of the housing, the support structure having a distal end portion that is affixed to the fore wall and a proximal end portion that protrudes through the aft wall,
wherein the proximal end portion of the support structure includes a first interface flange and a first portion of a separation system for connection to a launch vehicle through a second portion of the separation system mounted to the launch vehicle, and
wherein each of the four side walls is connected to the support structure only through the fore wall and aft wall.
2. The apparatus of claim 1 , wherein the support structure is a hollow column.
3. The apparatus of claim 2 , wherein the support structure is cylindrical.
4. The apparatus of claim 1 , wherein the support structure is comprised of laser sintered metal alloy.
5. The apparatus of claim 1 , wherein the support structure includes a wall portion having diamond shaped apertures.
6. The apparatus of claim 1 , further comprising:
a second satellite apparatus comprising:
a housing including first and second opposing walls, and
a support structure spanning the first and second opposing walls and enclosed by the housing,
wherein a distal end portion of the support structure in the first satellite apparatus is connected to a proximal end portion of the support structure in the second satellite apparatus.
7. The apparatus of claim 6 , wherein loads transfer from the second satellite apparatus to the launch vehicle through the support structure of the first satellite apparatus.
8. The apparatus of claim 6 , wherein the support structure of the first satellite apparatus and the support structure of the second satellite apparatus share a common central axis when connected.
9. The apparatus of claim 6 , wherein the support structure of the first satellite apparatus is connected to the support structure of the second satellite apparatus by another separation system.
10. A satellite assembly, comprising:
a launch vehicle having a launch axis, and
a plurality of satellite stacks inside the launch vehicle, each satellite stack including a proximal satellite and a distal satellite,
wherein each satellite, of the plurality of satellite stacks, has an internal cylindrical core structure, and the internal cylindrical core structures of the proximal satellite and the distal satellite of each satellite stack are aligned along a common core axis perpendicular to the launch axis, and
wherein the distal satellite of each stack is connected only to the proximal satellite of the stack, and loads transfer from the distal satellite to the launch vehicle through the internal cylindrical core structure of the proximal satellite of the satellite stack.
11. The satellite assembly of claim 10 , wherein the plurality of satellite stacks are equally distributed around a circumference of a ring structure.
12. The satellite assembly of claim 11 , wherein the ring structure has a center point, and the core axis of each satellite stack passes through the center point of the ring structure.
13. The satellite assembly of claim 10 , wherein each distal satellite is connected to a corresponding proximal satellite by a separation system.
14. A method of deploying satellites from a launch vehicle, comprising:
stacking a plurality of satellites inside the launch vehicle by aligning the satellites along a stack axis that is horizontal relative to a vertical launch axis,
connecting each satellite of the plurality of satellites to one or more satellites that are adjacent along the stack axis, wherein each two connected satellites are connected by one of a plurality of separation systems,
connecting a first satellite of the plurality of satellites directly to the launch vehicle by one of the plurality of separation systems,
carrying the plurality of satellites to space in the launch vehicle, and
sequentially separating the plurality of satellites, by using each separation system of the plurality of separation systems to urge either a distal one of the respective two connected satellites or the first satellite away from the launch vehicle in a horizontal direction relative to the vertical launch axis.
15. The method of claim 14 , wherein each satellite has a cylindrical core structure, and stacking the plurality of satellites includes:
connecting the cylindrical core structures of adjacent satellites.
16. The method of claim 14 , wherein stacking the plurality of satellites includes:
assembling plural stacks of satellites evenly distributed around a ring structure, each stack of satellites being aligned along a respective stack axis that is horizontal relative to the vertical launch axis.
17. The satellite assembly of claim 10 , wherein the internal cylindrical core structures of the proximal satellite and the distal satellite of a respective satellite stack are connected to form a cantilever beam, extending horizontally out from a payload adaptor of the launch vehicle.
18. The satellite assembly of claim 10 , wherein loads transfer from the distal satellite of each satellite stack to the launch vehicle only through the internal cylindrical core structure of the proximal satellite of the satellite stack, a first separation system connecting the internal cylindrical core structure of the proximal satellite to the launch vehicle, and a second separation system connecting the internal cylindrical core structure of the distal satellite to the internal cylindrical core structure of the proximal satellite.
19. The satellite assembly of claim 10 , wherein the internal cylindrical core structure of the proximal satellite is connected to the internal cylindrical core structure of the distal satellite by a separation system such that the separation system is not interposed between the internal cylindrical core structure of the proximal satellite and the internal cylindrical core structure of the distal satellite.
20. The method of claim 14 , wherein each satellite of the plurality of satellites apart from the first satellite is connected only to the one or more satellites that are adjacent along the stack axis.