An “Avoidable” Mishap

By lex, on March 4th, 2009

The F/A-18 is a wonderfully simple aircraft for a pilot to merely fly, a fact made possible by its hideous internal complexity. This complexity is hidden from the pilot (thank God!) by brilliant engineering. After having once heard a lecture on the flight control system, I remarked to a companion that it reminded me of the Schleswig-Holstein dispute: Only three men had ever really understood it; one had died, another had gone mad and the third had forgotten everything.

One of the main innovations in the transition from the F/A-18A to the C-model was a motive flow system – essentially an eductor that uses forced fuel flow to move more fuel from place to place. The motive flow system was slightly more complicated (but much lighter) than the mechanically operated, engine driven boost pump it had replaced. From the pilot’s perspective however, fuel just moved when it was supposed to – the internal system is entirely automated, there are no switches to throw.

views