“ We are just now coming along, ” says Geoffrey Lilley, professor emeritus of aeronautics at England’s University of Southampton. He adds that it could be decades before such a quiet plane could be designed.
„ Oleme alles tee hakul, ” nendib Inglismaa Southamptoni ülikooli emeriitprofessor aeronautika alal Geoffrey Lilley ning lisab, et selline vaikne lend võib saada teoks alles aastakümnete pärast.