Encourage different types of designs...seesaws are good for younger kids because they are easy to build and fire. Slingshots don't work as well. The "traditional" catapult design works very well but ...

Steam-powered catapults, expensive and difficult to maintain, are operating near their limits and will not be able to accommodate heavier aircraft planned for the future. PH3 Jason A. Fults / US ...

Catapults can launch almost anything, including heavy, fully armed strike aircraft. That trade-off has shaped how different navies design and operate their carriers, especially when it comes to ...