CrazyEngineers Forum - Mechanical & Civil Engineering |
| Revolutionary Spli Cycle Engine Posted: 12 Nov 2011 11:16 PM PST |
| reducing the rotor noise in helicopters Posted: 12 Nov 2011 09:50 PM PST It is seen that the noise in helicopters is mainly due to the formation of vortices formed by the blade tips. when the vortex formed by a blade is hit by a succeeding blade, noise is produced. to eliminate this noise or to reduce this noise a lot of modifications to the design of the rotor blades have been made. but if we can remove the chance of the blade coming in contact with the vortex by offsetting the blades, i believe that the noise level can be considerably reduced. thus we will have a shaft where the blades are fixed one below. there will only be one blade per plane. the unbalance in masses can be taken care of by adding correcting masses on the other side. |
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