Bayan kammala karatunsa daga Purdue, Armstrong ya zama matukin jirgi mai gwajin gwaji. Ya yi amfani da shi a Kwamitin Shawara na Kasa don Jirgin Sama (NACA) Babban Jirgin Jirgin Sama a Edwards Air Force Base. NACA ba shi da wani matsayi, kuma ya aika da aikace-aikacensa zuwa Lewis Flight Propulsion Laboratory a Cleveland, inda Armstrong ya fara gwajinsa na farko a ranar 1 ga Maris, 1955.
gwajin gwaji na gwaji