This would allow enough room for some, but not all, of the air to flow around the capsule as it speeds through at Mach 0.99. 2. Pump It Through A compressor can suck air in and pump it out below and behind the capsule. But the air must first be slowed by a diffuser to Mach 0.6...
However, in remote areas, it is difficult to conduct in situ measurement to obtain reliable evaporation data due to tough conditions; many ET studies have thus been based on empirical or estimated values rather than measured PET data—an approximation that increases uncertainty and has some ...