저항론 과제4_Self Propulsion Test
- 최초 등록일
- 2021.05.31
- 최종 저작일
- 2020.01
- 12페이지/ 어도비 PDF
- 가격 2,500원
소개글
"저항론 과제4_Self Propulsion Test"에 대한 내용입니다.
목차
1.Theory
2.Result
3.Analysis
4.Reference
본문내용
1. Theory
1.1 Power
- �!(Effective Power, EHP)= ��" = (total resistance) x (ship speed)
- �#(Thrust Power, THP)= ��$ = (propeller thrust) x (speed past propeller)
- �%(Delivered Power, DHP)= 2��� = (torque) x (angular velocity 2��)n
- �&(Brake Power, BHP)= �%/�#
- �'(Indicated Power)= �&/�(
1.2 Efficiency
- Total efficiency �#)*+, = -!-"= �.�&�#�(
- Hull efficiency �. = -!-#= �/�0
- Behind efficiency �& = -#-$
- Transmission efficiency �# = -$-%
- Mechanical efficiency �( = -%-"
- Quasi-Propulsive efficiency �% = -!-$= �.�& = �.�/�0
- Propeller Open Water efficiency �/ = #1&2345'= 6237#7(
- Relative rotative efficiency �0 = 5'5
1.3 Propeller Coefficient
- Advance speed �$ = �(1 − �)
- Advance coefficient � = �$⁄��
- Thrust coefficient �# = � ��2�8 ⁄
- Torque coefficient �5 = � ��2�9
1.4 POW Test
1.4.1 Values from POW test
- T : Thrust(N)
- Q : Torque(N ∙ m)
- n : Rotational speed(�:;)
- �$ : Speed of advance(�/�)
- �# = � ��2�8 ⁄
- �5 = � ��2�9 ⁄
- �$ = �$⁄��
- �/ = 6237#
참고 자료
Resistance_17_Prediction of Delivered Power / Kwang-Jun Paik
Resistance_7_Model-Ship Extrapolation(3D) / Kwang-Jun Paik