Question: During which was did Beatrice Shilling invent a simple technical device made to counter engine cut-out in early Spitfire and Hurricane fighter aeroplanes?
Sentence (from "Miss Shilling's orifice"): While it was officially called the R.A.E. restrictor, it was normally referred to under various names, such as Miss Tilly's diaphragm or the Tilly orifice in reference to its inventor, Beatrice "Tilly" Shilling.
Relevant evidence: Yes