NASA to use radio waves to gauge fuel levels on Nova- C lunar lander
When the Intuitive Machines Nova-C lunar lander lifts off on February 14, it will be carrying a novel new fuel gauge developed by NASA that can measure cryogenic propellants in the thruster tanks by means of radio waves.Measuring the amount of liquid in a tank on Earth is about as easy a problem to solve that there is. You can insert a dipstick or you can set up a simple mechanism with a float and a gauge marked E to F. In space, things are more than a bit complicated. With no gravity to pull the fluid to the bottom of…