NASA released a cool video showing rocket testing for the Mars Sample Return mission. - by AndyTomaswick
Testing of the SSSL and the rest of the SRM1 engine was performed at Edwards Air Force Base on April 7th. Part of a spectacular video NASA released provides details about the experiment, including that the SRM1 testing took place in a vacuum chamber, so there’s no sound to pick up on. Also, the corrective movements of the SSSL during the video seem particularly precise. The test was completed successfully, and the engineer is moving on to the next testing phase.
SRM2, on the other hand, is responsible for boosting the MAV into orbit, where it will rendezvous with the spacecraft that will take it back to Earth. Another challenge represented in its test video is that it will have to deal with spin. On the test bench, which was not in a vacuum chamber and could be heard warming up, the rocket engine spun at 200 rotations per minute . Its performance appeared remarkably steady in the video, with little evidence that spinning like this is uncommon in rocket engines.Both the SRM1 and SRM2 had another requirement for their test chambers – they had to be right around -20 degrees C.
Overall, both engines seemed to pass all the metrics required by their test plans, allowing them to move on to the next stage of development & testing. However, the project’s financial and administrative future remains up in the air, so it is unclear if either rocket will make it much further in development.
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