Louis Armstrong | Lance Armstrong | Neil Armstrong | George Armstrong Custer | double bass | Armstrong Whitworth | Hawker Siddeley | Double (association football) | Armstrong | double | Armstrong College | Double Dragon | body double | Double bass | double (baseball) | double agent | Hawker Siddeley Harrier | Gillian Armstrong | double feature | Mamee Double-Decker | John Armstrong | Double Dare | Armstrong Whitworth Whitley | the double | Karan Armstrong | Billie Joe Armstrong | Vanessa Bell Armstrong | Tim Armstrong | Robert Armstrong | Heather Armstrong |
Some of the more successful British aircraft with contra-rotating propellers are the Avro Shackleton, powered by the Rolls-Royce Griffon engine, and the Fairey Gannet, which used the Double Mamba Mk.101 engine.