4.5.7 - Hosted Payload

4.5.7-24 Level 2 Tasks

Tasks Applicable Mission Phases Description SFWC Artifacts References
4.5.7-24-1 Ensure assessment of solar reflections between the Hosted Payload and Host Vehicle Phase B | Phase C | Phase D1 | Ensure that reflections between the Host Vehicle and Hosted Payload do not create thermal accentuation, such as "double-sun" conditions, that could overheat the Hosted Payload or Host Vehicle. Emphasis is on damage to Host Vehicle, but adverse thermal conditions should not cause Hosted Payload to fail in a manner that can propagate to the Host Vehicle. Ensure that appropriate number of orbit positions are analyzed to capture such effects. Assess all optical properties being assumed, including specularity. NA NA TOR-2014-02199, Guidelines for Hosted Payload Integration
4.5.7-24-2 Ensure assessment of any radiative exchange between the Hosted Payload and Host Vehicle Phase B | Phase C | Phase D1 | Ensure assessment includes (but is not limited to) appendages in the field of view of radiators, backloading exchanges, shadowing effects, etc. Emphasis is on damage to Host Vehicle, but adverse thermal conditions should not cause Hosted Payload to fail in a manner that can propagate to the Host Vehicle. Ensure that appropriate number of orbit positions are analyzed to capture such effects. Assess all optical properties being assumed. NA NA TOR-2014-02199, Guidelines for Hosted Payload Integration
4.5.7-24-3 Ensure that Hosted Payload does not cause Host Vehicle temperature requirements to be exceeded while the Hosted Payload is in any operating or non-operating configuration Phase B | Phase C | Phase D1 | Ensure Hosted Payload does not cause Host Vehicle to exceed any thermal limits under any circumstance. For example, if the Hosted Payload mission ends before completion of the Host Vehicle mission, the Hosted Payload in its powered off state should not cause excessive heat leaks that could cause Host Vehicle units to exceed their thermal requirements. NA NA TOR-2014-02199, Guidelines for Hosted Payload Integration
4.5.7-24-4 Ensure that the Hosted Payload has survival heaters (through all mission phases, if necessary) to satisfy minimum non-operational temperatures that can potentially harm the Host Vehicle Phase B | Phase C | Phase D1 | Ensure Hosted Payload is provided with survival heater power in the event that cold survival limits cannot be satisfied by passive means. Potential concerns include changes in Hosted Payload material properties, such as embrittlement, resulting in fracture and generation of FOD that damages the Host Vehicle. Heaters should be oversized per common design practices to ensure acceptable control authority. NA NA TOR-2014-02199, Guidelines for Hosted Payload Integration