MilitaryFighters & multirolede Havilland Aircraft Company de Havilland Vampire1943 fighter aircraft family; first single-engine jet in RAF service1943
MilitaryMilitary helicoptersDe Lackner HZ-1 Aerocycle1954 experimental personal helicopter model by de Lackner Helicopters1954
MilitaryExperimental & historic pioneersDemoiselle1907 experimental aircraft series by Alberto Santos-Dumont1907