Me and my brother are at a loss, we understand the basics of how the upside down thing works, but how does the engine get fuel when the tank is turned around, is it a vacoom and how would that work or is the intake from the tank in the back of the it, so the fuel is forced into the engine? Thanks.
In: Engineering
One thing to keep in mind is that the issue isn’t necessarily flying upside down, it’s negative Gs.
Many upside-down aerobatic maneuvers are positive G maneuvers. For example, barrel rolls and loops are positive G maneuvers even though the aircraft is upside down during part of the maneuver. An aileron roll is an example of a negative G maneuver. Of course, at the end of a half loop or half aileron roll, the aircraft would remain upside down until the next maneuver.
Many aircraft rated for negative G flight still have limitations on how long they can stay inverted. This could be a fuel supply issue, an engine oil supply issue, or another similar fluid supply problem.
As for how aircraft are able to sustain inverted flight, they will have been designed with some sort of pressurization at some point in the fuel supply system to ensure supply for a limited time.
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