downwash
Air pushed downward
Downwash is the downward flow of air deflected by an aircraft's wings or rotor blades during flight.
As a wing generates lift, it pushes air downward; this column of moving air affects anything beneath it.
Helicopter downwash is particularly strong: The downwash from the chopper flattened the grass.
In aerodynamics, downwash also influences drag and the behavior of trailing aircraft.
Spinning mechanical assembly
- wakePath left in water
- vortexRotating fluid column
- slipstreamAerodynamic wake zone
- propwashAir displaced by propeller
Forceful forward motion
- pressureForce upon contact
- velocityDirected rate of motion
- momentumProduct of mass, velocity
- airflowMovement of atmosphere
blast · wind · acceleration
Aircraft lifted by blades
- hoverRemain suspended midair
- autogyroRotorcraft with unpowered rotor
- gyrocopterRotorcraft with unpowered rotor
- bladesSharp flat cutting parts
skids · hovering · brownout · whiteout · recirculation · collective · cyclic · flare
Counter-flowing circular currents
- vorticesRotating fluid masses
- buffetingRepeated striking or jolting
- roilDisturb by churning
- churnAgitate cream into butter
instability · disturbance · recirculation · swirl · gusts · fluctuations · mixing · agitation
rotor
Spinning mechanical assembly
- wakePath left in water
- vortexRotating fluid column
- slipstreamAerodynamic wake zone
propwash · circulation · airfoil · lift · Bernoulli · inflow · outwash
thrust
Forceful forward motion
airflow · blast · wind · acceleration
rotorcraft
Aircraft lifted by blades
- hoverRemain suspended midair
- autogyroRotorcraft with unpowered rotor
- gyrocopterRotorcraft with unpowered rotor
blades · skids · hovering · brownout · whiteout · recirculation · collective · cyclic · flare · approach
eddies
Counter-flowing circular currents
churn · instability · disturbance · recirculation · swirl · gusts · fluctuations · mixing · agitation
scour
Clean by hard rubbing
- Downdownhill, downstairs, downwind, downsize, downtime
- Hovering Flighthelicopter, hummingbird, hover, hoverfly, dragonfly
- aerodynamicsairflow, lift, drag, drag coefficient, turbulence
- helicoptershelicopters, helicopter ride, chopper, rotorcraft, copter
- TiltrotorOsprey, nacelle, vertical lift, airplane mode