Advances in Ship Helicopter Support Systems Enhancing Mission ...

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Speed-Weight Weight-Intended Service • Regulatory body structural design guidelines – DNV – Open Ocean operation is restricted for high speed craft • Time from sheltered waters • Minimal high loadings assumed • Limited attention to fatigue issues • Limited attention to extreme loads relative to spe cial material properties – relationship between yield and ultimate – Heat treated materials – Materials not lending themselves to non-destructive test inspection – ABS – Current deterministic rules are similar to DNV – Direct Loads Analysis Application – ABS-NSWCCD Team
Environment • Regulatory body guidelines : Probability Wave Period of Versus Wave Height Region for - Sea Sea State State 4 – Linear behavior (small amplitude responses) Northern Arabian Seas Summer 0.40 Gulf of Mexico – Implicit - seaway restrictions N. North Arabian Atlantic Winter 0.35 – Restricted water operation reflects the “peakedness” an d “bandedness” North Sea Winter of benign environments N. Atlantic North Sea 0.30 Gulf Of Mexico • 0.3500 Open ocean-greater spreading of amplitudes and perio ds • Littoral environments wave energy concentrated close t o ship dynamics 0.3000 resonant 0.25 conditions • Achieving reliability in structural design and ship stability: Probability Probabiltiy of Occurrence SS4 0.4500 0.4000 0.20 – design process consider probability of occurrence of o vermatching events in the specified environment 0.15 0.2500 0.2000 0.1500 0.10 0.1000 0.05 0.0500 0.00 0.0000 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 4-5 ft 5-6 ft 6-7 ft 7-8 ft Modal Wave Period (seconds) Wave Height
Page 1 and 2: Advances in Ship Helicopter Support
Page 3 and 4: Certification • Approval versus c
Page 5 and 6: AIR CAPABLE SHIP AVIATION FACILITIE
Page 7 and 8: 1H Scope of Application TABLE OF CO
Page 9: Safety Case Example
Page 13 and 14: Risk Events Evaluated P-Spec Define
Page 15 and 16: • Impact Value of Improved Inform
Page 17 and 18: X-Craft Maneuvering Requirements X-
Page 19 and 20: Directional Stability/Maneuvering C
Page 21 and 22: Ship Motions Certification λ=25 Te
Page 23 and 24: Ship Structural Certification STREN
Page 25 and 26: X-Craft Control Requirements X-Craf
Page 27 and 28: Human Performance • Evaluate exis
Page 29 and 30: Fire Scout System Hardware (Shipboa
Page 31: RQ-8A Air Vehicle Physical Characte

Advances in Ship Helicopter Support Systems Enhancing Mission ...

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