A jet engine is a few thousand parts surviving temperatures above the melting point of the metals they're made from, at rotational speeds that push the limits of material science, for thousands of hours. Most engines take a decade and a billion dollars to develop. We are building ours differently. At Boom we are developing Symphony - the engine that will power Overture, the world's fastest airliner and Superpower, the natural gas turbine and revenue engine that fuels our endeavors while unblock