announcing sift’s $42M series b funding. read more.
Specific impulse (Isp) is a measure of rocket or jet engine efficiency expressed as the amount of thrust produced per unit of propellant mass flow rate per second. It is the primary metric used to compare propulsion system performance with higher values indicating more efficient use of propellant. It is measured in seconds.
Specific impulse is calculated from propulsion test telemetry including chamber pressure, thrust, and mass flow rate. Getting an accurate Isp measurement requires full-fidelity sensor data at high sampling rates throughout the burn. Sift preserves that data without decimation and enables engineers to correlate Isp results across multiple test runs to validate engine performance.
