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Deployment

Saiph at Low Earth Orbit (Tiangong Space Station)

22 N bipropellant thruster using nitrous oxide and ethane. Qualified May 2023. Storable, non-toxic, spark-ignited. Flight heritage on Mira OTV flights (LEO Express-1 and 2) and Haven Demo (Vast). Selected for Vast Haven-1 space station propulsion (RCS + deorbit).

Saiph by Impulse Space · Operated by Impulse Space · Catalog entry · 2 sources · not yet field-verified · Space

Track Saiph at Low Earth Orbit (Tiangong Space Station)

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Machine-readable surfaces

Saiph thrusters are slated to provide RCS (augmenting CMGs) and deorbit capability for the Vast Haven-1 commercial space station, with launch targeted for 2027 and Q1 flight readiness. A Haven Demo mission launched Nov 2 2025 successfully tested the Saiph thrusters and deorbit sequence before deorbiting Feb 4 2026.

Key facts

Mission
Vast Haven-1 commercial space station propulsion
System
Saiph thrusters for RCS (augmenting CMGs) and deorbit
Target
Haven-1 launch targeted 2027 (Q1 flight readiness)
Validation
Haven Demo (launched Nov 2 2025) successfully tested Saiph thrusters and deorbit; deorbited Feb 4 2026.

Safety record

No incidents on record for Saiph at Low Earth Orbit (Tiangong Space Station).

Only active incidents are counted. Retracted incidents are excluded from this summary but remain reachable at their canonical URLs.

Trust tier
Catalog entry · 2 sources · not yet field-verifiedhow tiers work →
Last updated
2026-07-22
Model
Saiph
Company
Impulse Space
Location
Low Earth Orbit (Tiangong Space Station)
Operator
Impulse Space
Status
announced
Operator type
maker operated
ID
5d52f7ec-9832-441c-a701-aff73a117500

Timeline

  1. Jun 2026
    created
  2. Jul 2026
    Current status: announced, reviewed
    Latest recorded state. New status transitions append here as the deployment-status recorder produces them.

On the deployment map

Saiph operates in Low Earth Orbit (Tiangong Space Station). Explore the full verified map:

Sources (2)

  1. https://www.vastspace.com/updates/vast-selects-impulse-space-for-haven-1-space-station-propulsion
  2. https://www.impulsespace.com/propulsion/saiph
Methodology: Verified · 2 sources (no primary) · last reviewed 2026-07-22

Verification posture

Verified

Low confidence

Review state

Stable

Last reviewed 2026-07-22

Maturity + lifecycle

Maturity stage: commercial

Lifecycle: active

Architectural position

Cohort: space

Sources by quality tier

2
unclassified
Unclassified source

The framework is documented at /methodology. Corrections at /corrections. Reviewer: DEPLOY editorial team.

Methodology surface for Saiph at Low Earth Orbit (Tiangong Space Station).

Common questions

What is the Saiph deployment at Low Earth Orbit (Tiangong Space Station)?
Saiph, built by Impulse Space, is recorded as a deployment at Low Earth Orbit (Tiangong Space Station) on the DEPLOY registry. Impulse Space operates the deployment directly.
Who operates Saiph at Low Earth Orbit (Tiangong Space Station)?
Impulse Space, the manufacturer of Saiph, operates this deployment directly. This is a maker-deploys-its-own-product arrangement rather than a customer pilot.
Is the Saiph deployment at Low Earth Orbit (Tiangong Space Station) still active?
As of the most recent verification on the DEPLOY registry, this deployment is announced but not yet operating.
Have there been incidents at the Saiph deployment at Low Earth Orbit (Tiangong Space Station)?
No active incidents affecting this deployment are recorded on the DEPLOY registry. Absence of recorded incidents is not a guarantee no incident occurred; DEPLOY records only sourced incidents and suppresses retracted ones.

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