The drag force on an airship must be determined by testing with a reduced-scale model. The tests are carried out in a wa
Posted: Tue Apr 26, 2022 4:07 pm
The drag force on an airship must be determined by testing with
a reduced-scale model. The tests are carried out in a water tunnel,
where the airship model is fixed to a support instrumented with a
force sensor, the speed of the flow that affects the model is
controlled with a variable speed pump that is the one that
originates the flow. flow to the model. The scale is 1:20,
μwater=1.01x10-3 Pa-s, μair=1.85x10-5Pa-sρair=1.25 kg/m3,
ρwater=1000kg/m3, determine: a) Vm if Vp =36km/h b) the drag power
of the airship if Fm=1 649 N c) an expression for the drag
force.
a reduced-scale model. The tests are carried out in a water tunnel,
where the airship model is fixed to a support instrumented with a
force sensor, the speed of the flow that affects the model is
controlled with a variable speed pump that is the one that
originates the flow. flow to the model. The scale is 1:20,
μwater=1.01x10-3 Pa-s, μair=1.85x10-5Pa-sρair=1.25 kg/m3,
ρwater=1000kg/m3, determine: a) Vm if Vp =36km/h b) the drag power
of the airship if Fm=1 649 N c) an expression for the drag
force.