1. ZENO says

    Thank you Towleroad! You don’t find stories like this on Queerty. I hope you never stop bringing “the geek”.

  2. says

    I lit the engine by inserting a burning cotton swab (with wooden stick) while a small amount of oxygen was flowing. The acrylic catches fire very easily in a pure oxygen environment. The engine can be throttled and shut off completely, which is a major benefit to hybrid engine designs. Solid-fuel rockets cannot be throttled or shut off, which makes them difficult to control.