Originally Posted by
Copterline 103
This "formula" is a S76 series helicopter's upper (deck) cowling. This term is used by the factory and e.g. Flight Safety, Florida. The profile of upper deck cowling separately looks likes a formula car profile.
Never, ever heard it called that: it's been known as the 'race car' for as long as I've been S76 qualified. About 1980.