Louis Armstrong | Lance Armstrong | Neil Armstrong | George Armstrong Custer | Armstrong Whitworth | Hawker Siddeley | Armstrong | Leyland Leopard | Armstrong College | Leopard 2 | leopard | Hawker Siddeley Harrier | Gillian Armstrong | Leopard | John Armstrong | Armstrong Whitworth Whitley | Karan Armstrong | Billie Joe Armstrong | Vanessa Bell Armstrong | Tim Armstrong | Robert Armstrong | Heather Armstrong | Anton Armstrong | Warwick Armstrong | Robert Armstrong (actor) | Leopard 1 | Kerry Armstrong | John Armstrong (bishop) | Hawker Siddeley HS 748 | Frank A. Armstrong |
In 1930, the British Air Ministry issued Specification M.1/30 for a carrier-based torpedo bomber to replace the Ripon, to be powered by the Rolls-Royce Buzzard or Armstrong Siddeley Leopard engines.