// ORBITAL LOGISTICS AND PROPULSION TERM

Blackout Period

A temporary interval during which communication with a spacecraft is impossible or severely degraded, often due to atmospheric interference during re-entry or when the spacecraft is behind a celestial body.

Blackout Period — illustration from Wikipedia
Image via Wikipedia

TECHNICAL DEFINITION

A blackout period is a predefined or emergent interval during which radio communication with a spacecraft is interrupted or severely attenuated, commonly caused by plasma sheath formation during atmospheric re-entry, occultation by a celestial body, or solar conjunction, preventing data transmission and command reception.

BACKGROUND

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READ MORE ON WIKIPEDIA

SYNONYMS & ALIASES

  • Communication loss
  • Signal outage
  • Radio silence
  • Comms blackout

USAGE NOTE

During re-entry, spacecraft experience a blackout period due to superheated plasma.

DEVELOPERS

Organizations developing technology related to Blackout Period.

  • NASA

    Developing advanced communication systems, particularly optical communication, and autonomous spacecraft operations to mitigate communication blackouts during re-entry and deep space missions.

  • ESA (European Space Agency)

    Implementing robust space communication strategies and researching solutions to manage and reduce the impact of communication blackouts for Earth observation, exploration, and re-entry missions.

  • SpaceX

    Designing spacecraft (Dragon, Starship) that navigate re-entry blackout periods and developing resilient satellite communication networks to minimize service interruptions and enhance autonomy during signal loss.

  • Lockheed Martin

    Developing advanced satellite communication systems and spacecraft with enhanced autonomy to ensure reliable operations and data transmission, even during predicted or unexpected communication blackouts.

  • Boeing

    Involved in the design of spacecraft and communication architectures that address the challenges of communication blackouts, focusing on maintaining connectivity and operational control during critical mission phases.

  • JAXA (Japan Aerospace Exploration Agency)

    Conducting research into overcoming re-entry communication blackouts through innovative technologies and developing autonomous spacecraft systems for effective operation during periods of lost contact.

  • Blue Origin

    Developing reusable launch vehicles and space platforms that face re-entry communication challenges, focusing on technologies to maintain or restore connectivity during blackout periods.

  • Rocket Lab

    Designing and operating launch vehicles and spacecraft that encounter re-entry blackouts, and researching ways to improve communication and operational autonomy during these critical phases.

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