UNDERSTANDING THE PHYSICS OF TRIM
Presentation: Understanding the physics of trim - FORCE Technology
Presentation: Understanding the physics of trim - FORCE Technology
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Propeller efficiencyNon-dimensionalised result of apropeller test i.e. not in the wakefield. Plotted as a function of theadvance ratio (J).J=VAn⋅DPropeller revolutions (n)Propeller diameter (D)10.90.80.70.60.50.40.30.20.10Open Water0 0.2 0.4 0.6 0.8 1Results for Froude number = 0.128Trim -2.0m 0.0m 2.0mJ [-] 0.751 0.752 0.729η 0 [-] 0.638 0.639 0.629Δη 0 [-] -0.1% 0.0% -1.5%ΔP D η0 [%] 0.1% 0.0% 1.5%KT10KQηoJ
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