Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. 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 - the Rolls-Royce Vulture - proved unreliable in service. A parallel airframe with the Napier Sabre continued into production as the Hawker Typhoon.