That’s the title of the first chart in Max Vozoff’s talk, which is describing a new monopropellant that Firestar Technologies has been developing up in Mojave. Almost every vehicle, launch and in-space, uses it in some form, despite its toxicity and cost, because up to now there hadn’t been much alternative.
NOFBX is non-toxic and environmentally friendly, and outperforms hydrazine in every respect, particularly for monoprop hydrazine applications. It can literally be poured out on the ground. Will also reduce insurance costs, due to toxicity of crash site if a launch vehicle comes down in an unplanned location.
Firestar has 24 different patents filed, both domestically and internationally (Australia, Europe, Japan and China). Tested in thrusters from 0.1 pounds to a hundred pounds or so.
Showing a comparison matrix that’s too far away for me to read, but comparing Isp, storability (wide temperature range, etc.), throttleability (hundred to one), full thrust in under ten milliseconds, no catalyst bed or heaters, can be mixed up on site with standard chemicals. Acoustic environment much lower due to no need to mix in the chamber — very quiet engines. Self pressurizing, so no need for pressurant (single-fluid system). Less than 5% of the cost of monomethyl hydrazine. Think they can get T/W ratio of a hundred to one on a hundred pound thruster.