CUVX Design Report - the AOE home page - Virginia Tech

CUVX Design – VT Team 2 Page 82Figure 74 and Table 47 describe the righting arm and heeling arm curve for the full load condition.Figure 74. Righting Arm (GZ) and Heeling Arm Curve for Full Load ConditionTable 47. Righting Arm (GZ) and Heeling Arm Data for Full Load ConditionBeam Wind with Rolling Stability Evaluation (per US Navy DDS079-1)Wind Heeling Arm Lw 0.297 m Displacement 30686 MTMaximum Righting Arm 1.252 m GMt (corrected) 3.177 mCapsizing Area A2 0.3 m-rad Mean Draft 7.116 mRighting Area A1 0.7 m-rad Roll Angle 25.0 degWind Pressure Factor 0.0035 Angle at Intercept 60.0 degWind Pressure 0.1709 MT/m2 Wind Heel Arm Lw 0.297 mWind Velocity 100 knts Wind Heel Angle 5.0 degProjected Sail Area 3977.5 m2 Maximum GZ 1.252 mVertical Arm 17.056 m ABL Angle at Maximum GZ 36.2 degHeeling Arm at 0 deg 0.299CUVX-HI3 intact stability is satisfactory for both minimum operating and full load conditions.4.11.2 Damage StabilityIn addition to the locating transverse bulkheads to satisfy floodable length requirements, the two load cases,Minimum Operation (Minop) and Full Load, are checked for damage stability using a 15% LWL damage length inaccordance with DDS 079-01. This is equal to a 32 meter damage length which is systematically applied along thelength of the ship starting from the bow and moving aft. Worse case penetration to the centerline is used. 28 damagecases were assessed for each loading condition. In all cases, the flooded angle of heel must be less than 15 degrees,the margin line must not be submerged, and remaining dynamic stability must be adequate (A 1 > 1.4 A 2 ).Table 48. Minop Damage ResultsIntact Damage BH 21-66 Damage BH 132-180Draft AP (m) 7.055 3.995 9.546Draft FP (m) 7.024 14.855 6.739Trim on LBP (m) 0.031A 10.860F 2.807ATotal Weight (MT) 30259 40356 36876Static Heel (deg) 0.0P 2.8S 11.4SWind Heel (deg) 5.5P 8.7S 18.1SGM t (upright) (m) 3.166 2.796 1.701Maximum GZ 1.80 1.545Maximum GZ Angle (deg) 60.1S 60.1SGZ Pos. Range (deg) > 57.2 > 48.6