Definition of downwash in English:


Line breaks: down|wash
Pronunciation: /ˈdaʊnwɒʃ


[mass noun]
The downward deflection of an airstream by an aircraft wing or helicopter rotor blade: the energy in main-rotor downwash [count noun]: it generates a 200 mph downwash when lifting heavy loads
More example sentences
  • In each case, the helicopter descended into rotor downwash and entered what is commonly called the vortex ring state.
  • There is no propeller blade downwash, which reduces the probability of an accidental mine detonation.
  • This account suggests that at low speed and high angle of attack wing downwash could have a blanking effect on airflow to the engine intakes (made worse by any yaw).

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