“The Tilly Orifice” might sound like a poorly named lesbian bar, but it was actually a crucial field modification for British fighter planes. See, in WW2 the famous Spitfire and it’s counterpart the Hawker Hurricane both used the renown Merlin engine.
The Merlin was a wonderful design but the carburetor that fed it fuel would stop working if you flew the plane upside down, and the engine would cut out as you started a dive (the negative G force caused it to stop feeding fuel to the engine).
Beatrice “Tilly” Shilling was an engineer who helped quickly design a part that would help stop this problem and it could be installed at the airbase, keeping planes on the line instead of pulling them out of the fight.
Tilly also was the 2nd woman ever to be clocked at over 100mph on a motorcycle at the famous Brooklands circuit, on a Norton she modified herself.
That’s a proper “need for speed” kinda gal. In the Wiki page is a link to her own page, where you can learn about her career. She even helped famous racer Dan Gurney troubleshoot overheating problems in one of his F1 cars.
Johnny Killmore 
An excellent rabbit hole.
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