Pintle exotic metal alloys. For World War II aircraft with sideways-retracting main gear units, carefully set-up "pintle angles" for such axes of rotation during retraction and extension allowed the maingear struts to be raked forward while fully extended for touchdown and better ground handling, while permitting retraction into rearwards-angled landing gear wells in their wings to usually clear the forward wing spar for stowing while in flight. Pintle A pintle is a pin or bolt, usually inserted into a gudgeon, which is used as part of a pivot or hinge. Other applications include pintle and lunette ring for towing, and pintle
Jonbar hinge the term when reviewing S. M. Stirling's "In the Courts of the Crimson Kings". In Michael Chabon's "The Yiddish Policemen's Union" the jonbar hinge was the death of the main opponent to the King-Havenner Bill, which, if passed, would have allowed Jewish refugees to settle in Alaska. The jonbar hinge in "Bring the Jubilee," Ward Moore's 1953 novel of American Civil War alternate history, is Robert E. Lee's victory at the 1863 Battle of Gettysburg. The term is also used when describing an important upcoming event or decision humanity will have to make in the future. Jonbar hinge In science-fiction