"1"^^ . "4"^^ . "The Hawker Tornado was a British single-seat fighter aircraft design of World War II for the Royal Air Force as a replacement for the Hawker Hurricane. The planned production of Tornados was cancelled after the engine it was designed to use\u2014the Rolls-Royce Vulture\u2014proved unreliable in service. A parallel airframe with the Napier Sabre continued into production as the Hawker Typhoon."@en . .