D 558 - D 558M - 19
๐ Scientific
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
The six Douglas D-558 research aircraft, built as two variants, were produced for a US Navy and NACA collaborative project to investigate flight in the high subsonic and supersonic regimes and to develop means of coping with the dangerous phenomena of compressibility and pitch-up which had caused ma