 Roger Mark Boisjoly ,; April 25, 1938 January 6, 2012 aiva American injiniya, fluid dynamicist, uye aerodynamicist. Iye anonyanyozivikanwa nokuda kwokusimudza zvinetso zvakaoma pakutanga kweSpaceship Shuttle Challenger mwedzi pamberi pokurasikirwa kwechikepe chomuchadenga navashandi vachomuna January 1986. Boisjoly akafanotaura zvakarurama, achishandisa mashoko okutanga okubhururuka, kuti O-rings dzomumakombi roketi dzaizokundikana kana shuttle ikatanga mumamiriro okunze anotonhora. Mamaneja aMorton Thiokol akasarudza kubudisa ngarava yacho pasinei nenyevero dzake. Aifungidzirwa kuva muzivisi wenhema akatanhamara. 