Cryogenic Two-Phase Mass Flow Measurement
In order to meet the most important demand of the rocket/spacecraft industries – namely the adequate/complete fueling of the rocket/spacecraft to insure a safe liftoff/launch – QUANTUM DYNAMICS developed two-phase mass flow measurement systems, consisting of our patented dielectric-to-density converter (DDC), our patented very wide range twin-turbine flow sensor, and a flow computer that integrates the volumetric flow and density into mass flow via the Clausius Mossotti equation.
These systems are used in ground fueling of launch vehicles using LH2, on-orbit 0-G refueling, custody transfer of LN2 used in flash freezing, etc.
A further application is the continuous control of cryogenic fracturing of shale gas formations using LN2, LCO2, etc., eliminating the voluminous amounts of trucked in water.
Also See https://www.youtube.com/watch?v=x4FNhTYwINw for another exciting application of this technology!
![Cyrogenic Flowmeter System CyroSyst](https://qdflow.com/wp-content/uploads/2019/01/cyrogenicSystem-768x503.jpg)
"Fourteen flowmeter vendors with experience in NASA DOD, commercial airborne vehicle, space vehicle, and ground measurement instrumentation were contacted to determine if they had an off-the-shelf capability to support the COLD-SAT flowmeter requirements. Only one vendor, Quantum Dynamics in Woodland Hills, California, indicated the capability to support the COLD-SAT flowmeter requirements" - NASA Contract Report 185249