ɐn ˌæspɚɹˈeɪʃən sˈɪstəm pˈʊlz ˈɛɹ ˌɪntʊ ðə tˈuːbz, ænd ɪz jˈuːzd tʊ ɪŋkɹˈiːs ðə dᵻpɹˈɛʃən ˌɔn wˈʌn sˈaɪd ʌvðə sˈeɪl; ɐ ɹɪˈækʃən fˈoːɹs əkˈɜːz æz ðə ɹɪzˈʌlt ʌvðə pɹˈɛʃɚ dˈɪfɹəns.
An aspiration system pulls air into the tubes, and is used to increase the depression on one side of the sail; a reaction force occurs as the result of the pressure difference.