Factors influencing the predicted performance of advanced propeller designs

Bober, L. J.; C, Li

doi:10.2514/6.1981-1564

Cited by 10 publications

(2 citation statements)

References 2 publications

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“…4 ' 5 Comparisons between experimental data and the predicted results for the NASA advanced turboprop are given in Ref. 6. Although an ideal model has been assumed in this paper, the optimization method can be extended to include the neglected factors.…”

Section: Formulationmentioning

confidence: 99%

Optimization of Propeller Blade Twist by an Analytical Method

Sullivan

1984

AIAA Journal

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Based on the vortex lattice method and nonlinear programming, the problem for predicting optimum propeller blade twist has been formulated and solved to maximize the propulsive efficiency under the constraint of constant power consumption. The propeller is represented by a curved lifting line and a number of control points. The optimum twist distribution can be determined for a specified geometry of the lifting line. The method can be applied to complex blade shapes (swept, bent, propletted, and biblades). To demonstrate the method, the geometry of the lifting line of a straight blade and a propletted blade has been employed. The twist distribution and the ideal efficiency for the optimized and unoptimized blades are compared. The predicted improvement in ideal efficiency is about 1-6% for the optimized blade with proplet over that of the original propeller.

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Section: Formulationmentioning

confidence: 99%

Optimization of Propeller Blade Twist by an Analytical Method

Sullivan

1984

AIAA Journal

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“…17). These comparisons are shown in figure 13 and are intended to indicate the current status in the development of the programs and demonstrate areas where the programs need to be improved.…”

Section: Propeller Model Designsmentioning

confidence: 99%