- 01Reads project dataStages, timesheets, costs, tests and documents recorded in Paylists.
- 02Searches published workOpenAlex, Europe PMC, PubMed, arXiv, Crossref, OSTI, NASA NTRS, NIST and other sources.
- 03Recommends answersEach answer is supported by references for your team and R&D tax advisor to review.
What the R&D aim of the project is
Lister recommended answerTo maintain temperature-sensitive spacecraft components inside their operating envelope while meeting strict mass, power and volume constraints.
Scientific or technological uncertainty
- 01
Describe exactly which uncertainties you need to resolve
Lister recommended answerWhether a constrained combination of passive and active thermal-control components can manage worst-case transient orbital heat loads.
- 02
Describe what made it a project to resolve a specified uncertainty
Lister recommended answerIndividual thermal-control technologies were already known, but the combined thermal response of the proposed constrained spacecraft configuration could not be predicted with sufficient confidence.
- 03
Describe the steps you plan to take to resolve them
Lister recommended answerDevelop thermal models, simulate hot/cold orbital cases, perform thermal-vacuum tests and correlate measured results with the model.
- 04
What difficulties are foreseen for the project
Lister recommended answerRapidly changing solar exposure, internal dissipation and limited radiator area can produce transient temperatures that steady-state analysis does not predict accurately.
- 05
Information about any major changes to the aims, or new uncertainties that have been encountered, while running the project.
Lister recommended answerTesting may show unexpected thermal coupling that requires changes to straps, coatings, heater logic or thermal isolation.
- 06
How the uncertainties and other challenges were overcome (or not).
Lister recommended answerThe updated configuration would be retested under worst-case thermal-vacuum profiles and model correlation repeated.
An advance in science or technology
- 01
A review of the current state of knowledge
Lister recommended answerNASA documents established heaters, insulation, coatings, thermal straps, heat pipes and other SmallSat thermal-control methods.
- 02
How the project sought an advance in a qualifying area of science or technology
Lister recommended answerThe project sought a validated thermal-control capability under a combination of mission constraints not readily predictable from component specifications.
Result, conclusion and evidence
Result
The final configuration met the defined hot/cold envelope in the validated mission cases.
Conclusion
The advance is limited to the validated spacecraft and mission envelope.
Evidence still needed
Model versions, boundary conditions, component loads, thermal-vacuum data, calibration and model-to-test correlation.
Supporting references
NASA Small Spacecraft Thermal Control.
nasa.gov ↗NASA Passive Thermal Control Engineering Guidebook.
ntrs.nasa.gov ↗NASA CubeSat thermal-control louvers.
ntrs.nasa.gov ↗