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WebMar 22, 2024 · It can be seen that the helicopter has different RCS magnitudes in many domains. At the ( 0 °, 0 °) -coordinate, the RCS is 16.51 dBsm without trimming, while it is 12.09 dBsm with trimming, with a difference of 4.42 dB. Among all the calculated points, the largest RCS difference is located at ( 27 °, 7 °) -coordinate, which reaches 6.90 dB. WebOct 15, 2024 · You ask about damping. Damping must be considered when dealing with structural dynamics, or vibratory phenomena. In a helicopter rotor, multiple phenomena can lead to vibrations. For instance : Differences in blade properties (mass mostly, but also stiffness) Rotor imbalance due to machining uncertainties. Bearings. list of hmrc approved professional bodies
(PDF) Electromagnetic scattering characteristics of coaxial helicopter …
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