“…A centrifuge can be used to achieve higher gravity levels than Earth's, and NASA used one for flammability studies [57]. The Japanese Space Agency (JAXA) has a centrifuge rotating arm which has also been used for flammability experiments [58]. It has been demonstrated that buoyancy effects at higher gravity levels than Earth's can provide useful data in order to correlate flame spread from microgravity to several gravity levels [59].…”