Environmental Specification

Operating Temperatures

Domain(s)

Space

System(s)

Satellite

Specialty

ENV

Profile(s)

CH, COMM, EXP, PS, RP, SMAC

Specification Type

Implementation

Citation(s)

Internal_Standard

Operational temperatures are provided in thermal study for the nominal orbit. Excursions from predicted operational temperatures shall be increased by 11C (bilateral) when these temperatures are utilized in all fatigue analysis.

For the purposes of fatigue the temperature excursion within an orbital season may be considered. For the purposes of fatigue assume the following season durations:

Nominal is 50% of Life

Cold Beginning of Life is 25% of Life

Hot End of life is 25% of Life

Vendors analyzing part may request temperature distributions and heat-loading information to support their analysis.

	Nominal orbit	Hot orbit	Cold orbit
JAS Box	-18 to + 40 C	-7 to +45 C	-20 to +26 C

Predicted Temperatures for Fatigue Calculations

Internal_Standard

"Internal Standards developed by Sandia National Laboratories". Experience Base, Sandia National Laboratories, Albuquerque, NM, 0000.