Figure 12(a) Effects of Inclining Water. Figure 12(b) Sand. NASA-TN-D-56 An investigation to determine conditions under which downwash from VTOL aircraft will start surface erosion from various types of terrain.

Photographer NASA

Location NASA Langley Research Center

Date May 4, 1959

NASA Langley LRC LARC 1959-L-01946 LRC-1959-B701_P-01946

Figure 12(a) Effects of Inclining Water. Figure 12(b) Sand. NASA document NASA-TN-D-56 An investigation to determine conditions under which downwash from VTOL aircraft will start surface erosion from various types of terrain