Seraphina Relight Test - August 20th, 2026

On August 20, 2026, MACH completed a remotely commanded relight of its liquid-bipropellant engine. The first hotfire was intentionally shut down, chamber pressure returned to ambient, and the engine was then commanded through a second hotfire without physical servicing or personnel approaching the system.

Team photo

Seraphina team beside the test stand at the August Launch Canada relight — Team at the Seraphina test stand.

Launch Canada 2026

Test Video

Additional Hotfire

A separate Seraphina hotfire was also completed on August 20. No telemetry data is available for this firing, so it is documented by video only and is not represented in the plots below.

Additional August 20 hotfire. No telemetry data is available for this firing.

Test Data

Download Test Data (.xlsx)

Propellant Loading

Fuel and oxidizer tank pressures with raw propellant mass during loading for the Seraphina relight test on August 20th, 2026

Double Hotfire Telemetry

Firing	Peak thrust	Peak chamber pressure
First	1,380.1 N	287.7 psi
Relight	1,208.1 N	250.0 psi

Combined pressure, thrust and propellant-mass telemetry for both Seraphina hot fires on August 20th, 2026

Team celebration

Seraphina team celebrating the August Launch Canada relight test — Team celebration.