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P K Pillai
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The downwash from a helicopter rotor, if passed over a suitable surface below the rotor could produce a Coanda Effect. Will this influence lift?
P K Pillai said:The downwash from a helicopter rotor, if passed over a suitable surface below the rotor could produce a Coanda Effect. Will this influence lift?
Baluncore said:The lift generated by a helicopter is created by the blade airfoil section, not by the down stream draft.
Nothing is truly independent. The downwash is a reaction to the lift generated by the airfoil.cjl said:Those aren't really independent
Yes, Boneh3ad is correct, I never doubted it. Increasing lift by interfering with the downwash is the same as trying to lift yourself by your own boot laces, or a snake eating it's own tail.cjl said:Boneh3ad is correct - any redirection of this downwash is going to reduce the lift generated.
Baluncore said:Nothing is truly independent. The downwash is a reaction to the lift generated by the airfoil.
That is not always true, for example, the increase in lift when hovering in ground effect.Baluncore said:Increasing lift by interfering with the downwash is the same as trying to lift yourself by your own boot laces, or a snake eating it's own tail.
Baluncore said:Nothing is truly independent.
You seem to be contradicting yourself thereBaluncore said:... rather than implementing a postmodernist analysis/confusion of everything being inseparably connected.
Science is the contradiction.AlephZero said:You seem to be contradicting yourself there
The Coanda Effect is a phenomenon in fluid dynamics where a fluid (such as air) tends to follow a curved surface instead of moving in a straight line.
In a helicopter, the rotor blades create a downward flow of air known as downwash. This downwash can be redirected and intensified by using the Coanda Effect, which increases the lift force and helps the helicopter stay in the air.
The strength of the Coanda Effect on a helicopter rotor is affected by several factors, including the shape and curvature of the rotor blades, the speed and angle of the airflow, and the density and viscosity of the fluid (air).
By utilizing the Coanda Effect, helicopter designers can create rotor blades with specific shapes and angles that redirect the downwash and increase the lift force. This allows the helicopter to generate more lift and stay airborne.
Yes, the Coanda Effect has been used in various engineering and design applications, such as in aircraft wings, exhaust systems, and fluid pumps. It has also been studied for potential applications in renewable energy and propulsion systems.