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Space development · technical draft

Temperature-responsive spacecraft radiator films

A thin-film thermal-control concept that changes emissivity with temperature.

Development technology; numerical design data to confirm

  • Tungsten-doped VO₂ thin film
  • Temperature-dependent emissivity
  • Thermal-control development concept

This development concept uses tungsten-doped vanadium dioxide to vary thermal radiation passively. It is a spacecraft thermal-control technology rather than a laser or optical amplifier.

Configuration options

Each row is a separate configuration. Limits from different rows must not be combined.
ConceptLower-temperature behaviourHigher-temperature behaviour
Responsive radiator filmLower-emissivity heat retentionHigher-emissivity heat rejection

Technical details

Transition temperature
Not numerically specified
Emissivity limits
Not numerically specified
Film thickness and area
Not numerically specified
Space qualification
Mission-specific evidence to confirm

Integration and delivery

Integration
Substrate, coating process and spacecraft thermal interface require review

Conditions and configuration notes

  • No temperature setpoint, thermal capacity, emissivity range or flight acceptance limit is inferred.
  • Ground-test statements do not establish flight qualification for a delivered coating.

Applications to discuss

  • Passive spacecraft thermal control

Specify your configuration

Precisometer supports selection and integration. Contact us for a quotation against an agreed configuration.

  • Temperature range, thermal load and radiator area
  • Substrate, coating process and environmental constraints
  • Ground-test evidence, mission qualification and delivery status
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Local technical draft · configuration and final specifications require confirmation.