Originally Posted by
Cubdriver
Janitrols are located in the nose and I doubt that one could light off without at least one engine running. But it is an excellent systems question for an exam and I'll check on it. They also have thermocouples to prevent fuel flow to the unit in the absence of exhaust heat.
Strange, it was definitely flowing fuel onto the ramp instead of providing heat, but I can't exactly remember the particulars or if it was contained in the heater or outside. Anyways thanks.