Platform and launch initiation system for secondary spacecraft for launch vehicle
A platform and launch initiation control system for secondary spacecraft for a launch vehicle includes an aluminum honeycomb core sandwiched between top and bottom structural aluminum skins and strengthened by a spider-like stiffener. Spool inserts for engaging the secondary spacecraft are arranged on the platform. A computer processor based auxiliary payload support unit (APSU) is provided on the platform and receives power and enable signals through a single cable from the LV to permit the APSU to control the release of the secondary spacecraft transparently to the LV without impacting LV operations.
1. A auxiliary payload support unit (APSU) for coordinating release of at least one auxiliary payload (AP) from an AP support assembly of the APSU, the APSU being engageable with a launch vehicle (LV), the APSU comprising:
at least one processor associated with a deployment sequencer at least indicating when a particular AP associated with the APSU should begin to receive power;
at least one communications interface between processor and LV;
at least one computer readable data storage medium accessible to the processor and bearing instructions executable by the processor; wherein
the APSU is configured to communicate with the LV through a cable, the processor when executing the instructions being configured for receiving, post-launch of the LV, an enable signal from the LV prior to which the deployment sequencer cannot begin causing power to be sent to any AP and the processor cannot begin executing a launch sequence for any AP such that the LV controls when the APSU begins executing AP release, the processor when executing the instructions being configured for, responsive to receiving the enable signal, executing the deployment sequencer to power at least one AP on the APSU and execute a launch sequence for the at least one AP on the APSU such that the LV need not, after sending the enable signal to the APSU, thereafter command or communicate anything to the APSU regarding AP release, relieving the LV of the burden of controlling launch of the AP, the deployment sequencer being configured for receiving from an AP a separation signal indicating the AP is separated from the APSU.
2. The APSU of claim 1 , wherein the processor, responsive to the enable signal, enables power switching to the AP such that a separation device of the AP is energized as appropriate to ensure AP launch on schedule.
3. The APSU of claim 1 , wherein the processor when executing the instructions is configured to receive from the AP a separation signal indicating AP separation from the APSU.
4. The APSU of claim 3 , wherein the processor when executing the instructions, responsive to receiving the separation signal, determines whether another AP awaits release from the APSU and if so, enables release of the AP.
5. The APSU of claim 3 , wherein the processor when executing the instructions, responsive to receiving the separation signal, determines whether another AP awaits release from the APSU and if not, deenergizes itself.