The De Havilland Goblin turbojet, designed by Frank Halford, was the second British jet engine to fly and was based on compressor technology pionered by Frank Whittle. Originally named the Halford-1, after its designer, the Goblin 1 first ran in April 1942 and achieved its first flight while being fitted to a Gloster Meteor in March 1943. The Goblin D.Gn.2 version delivered 3,125 lbs of thrust and was used extensively in the DeHavilland Vampire fighter aircraft of the late 1940's.