Aircraft
In the Universal Century timeline, aircraft were extensively used in the One Year War both in atmosphere and in space. Earth Federation Air Force mainly uses FF-3 Saberfish as their high altitude interceptor, FF-4 Toriares and FF-6 Tin cod as their short range fighter.
The FF-3 is actually a joint project with the EFSF and could be slightly modified and become the space fighter FF-S3.
The Zeon Forces, having a different testing environment, developed the Dopp fighter to counter the EFAF. The unit flies mainly by thrust and little by air lift due to space colonies having no gravitational pull in the middle. The Dopp fighter design concept is the same as mobile suits which relies heavily on its turning speed rather than its flight speed. A special type of material called Zeonium was used on such planes to give it a lighter yet stronger frame. Despite the strange name given, it is actually just a type of aluminium alloy.
The Gattle used by Zeon forces in the One Year War also incorporates Wing Binder system for minimal AMBAC.
Later, EF developed the FF-7 to slowly phase out FF-3 series.
Read more about this topic: Mobile Weapons