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Obtaining the Practical Formula for the Trim-tab Dimensions to Reach the Minimum Drag for Planing Boat

Matin Mohebbi, Mohammad A. Ghassemi, Hassan Ghassemi

American Journal of Mechanical Engineering. 2020, 8(4), 163-171 doi:10.12691/ajme-8-4-3
  • Figure 1. Drag diagrams in terms of trim at various speed
  • Figure 2. Effect of the span on angle of trim-tab (chord=0.2B)
  • Figure 3. The effect of the chord on angle of trim-tab (span=0.6B)
  • Figure 4. Effect of the span on trim-tab drag (chord=0.2B)
  • Figure 5. Effect of the chord on trim-tab drag (span=0.6B)
  • Figure 6. Trim changes in 2 modes with trim-tab and without trim-tab
  • Figure 7. Drag changes in 2 modes with trim-tab and without trim-tab
  • Figure 8. Effect of the area on trim-tab drag
  • Figure 9. Effect of the area on trim-tab drag
  • Figure 10. Effect of the area on trim-tab drag
  • Figure 11. Effect of the area on the angle of trim-tab
  • Figure 12. changes in lift coefficient of trim-tab and average pressure coefficient of trim-tab in terms of angle of trim-tab
  • Figure 13. Flowchart of the computational process