wˈʌns ɪɡnˈaɪɾᵻd, ðə ɡˈʌnpaʊdɚ tˈuːb wʊd aɪdˈiəli ɪdʒˈɛkt ɐ stɹˈiːm ʌv flˈeɪmz ɪnðə dᵻɹˈɛkʃən ʌvðə spˈɪɹhɛd.
Once ignited, the gunpowder tube would ideally eject a stream of flames in the direction of the spearhead.