If all goes to plan, the Mars Ascent Vehicle will be the first rocket ever to launch on another planet.
The MAV, which is planned to be the first
ever to launch from another planet, is a two-stage vehicle. Two development solid rocket motors, SRM1 and SMR2, for each stage have been fired in recent months to test their performance before building the real motors destined for Mars.A rocket motor that’s part of the development program for NASA’s Mars Ascent Vehicle is tested at a Northrop Grumman facility in Elkton, Maryland on March 29, 2023.
SRM2 was tested at Northrop Grumman's facility in Elkton, Maryland, on March 29. Footage from a recently released video shows the engine firing up while spinning at 200 RPM. The second stage will use spin stabilization to keep the launcher on target toward its correct orbit. SRM1 was tested on April 7 at Edwards Air Force Base in California. Both trials were conducted to test performance of the motors at minus 4 degrees Fahrenheit to simulate conditions on Mars.
The SRM1 test demonstrated a state-of-the-art trapped ball nozzle featuring a supersonic split line, which will allow the motor to alter the direction of its thrust and control its flight. This novel design was employed because normal gimballing solid rocket motor nozzles can't handle the extreme cold present on Mars, mission team members said.
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