Pakupanga ma prototype, zida zachitsulo zimagwira ntchito yofunika kwambiri popanga ma prototypes olimba komanso olondola. Zitsulo monga aluminiyamu, chitsulo, ndi titaniyamu nthawi zambiri zimasankhidwa chifukwa cha mphamvu zawo zapadera, kulimba mtima, komanso kuthekera kopirira kuyesedwa kolimba.