Green propellant successfully demonstrated on NASA mission:https://spacenews.com/green-propellant-successfully-demonstrated-on-nasa-mission/
However, NASA got something they value quite highly: a cool acronym - ASENT!
Quote from: Comga on 01/23/2021 02:05 amHowever, NASA got something they value quite highly: a cool acronym - ASENT!Even cooler when its spelt right! :-) The acronym is ASCENT (Advanced Spacecraft Energetic Non-Toxic).
Quote from: yg1968 on 01/22/2021 01:53 pmGreen propellant successfully demonstrated on NASA mission:https://spacenews.com/green-propellant-successfully-demonstrated-on-nasa-mission/Sheesh! An interesting definition of "success"Six and a half years after the announcement, they declare victory and retreat hastily.Note that the original plan was to demo four 1 lbf thrusters for attitude control and a 5 lbf main thruster.(Gotta love those Imperial units.)Aerojet could not deliver the larger thruster so a fifth 1 lbf thruster was put in that center position.(My friend just learned the term RUD. Aerojet could have taught him that years ago.)In the meantime, Rocketlab debuted Curie, a 120 N (~27 lbsf ) green monopropellant thruster.Rocketlab followed that with Hyper-Curie a larger green bipropellant system.(Anyone know the thrust of the Hyper-Curie engine?)So whatever was demonstrated by GPIM is now pretty far off the leading edge.
...Of all the technology gaps NASA STMD needed to be focused on demonstrating over the past decade, green propellant was never one.