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Shac M+ Final

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  • 1. SPECIAL HIGH ALTITUDE COMS- MARITIME PLUS (SHAC-M+) Ron Seiple [email_address] 808 2614888
  • 2.
    • Near Space Balloons offer an excellent means to expand tactical coms link
    • Submarines will NOT deploy using He gas near surface!
    • To be effective PSB’s must be:
      • Sustainable
      • Covert
    • They are:
      • Affordable
      • Simple
      • Effective
    WHY IS THIS NEEDED?
  • 3. APPROACH
    • Develop a system that would “seed” PSB’s in Littorals from:
      • Submarines
      • Aircraft
      • Surface Ships/craft
    • Emphasis from Submarine
    • Provide continuous coverage
    • Make it easy:
      • This approach takes the war fighter out of the loop!
  • 4. SUBMARINE APPROACH
    • Two phase parallel approach:
      • PSB and Tethered Mast System (TMS)
    • Important to gain Sub COMS at Speed and Depth- PSB cannot do it alone!
    • Submarines and especially SSBN’s do not like to spend time a PD!
  • 5. The Tethered Mast System (TMS) Basic Artist Concept Near Space Balloon (Temporary Satellite) Tethered TMS + Coms equipments Background Patent (Classified) NUWC NP Program in late 80’s SAIC Support plus up Program
  • 6. Mission & Characteristics of TMS SSN/SSGN/ASDS/SDV Potential
    • Coms at S&D
    • ISR
    • Potential Characteristics
      • SOF CCC
      • ISR/IO
      • Persistent Coms
      • Maintain Stealth
      • Blue and Littorals
      • Bi-directional
      • HDR>64KBPS
    • Performance Characteristics
      • 10kts – 300 ft
      • SS3 – 4
      • No organic assistance
      • Good Economy of Ops
      • LPI/LPD
      • Potential Range 500nm
      • Good utility for Sub Classes
      • Reasonable Tech Readiness
      • Minimal Load out Restrictions
      • Requires Air Relay
  • 7. Towing speed = 6knots VCG = -10.5 ft below free surface Sea state = 2 Bow quartering seas Degrees of freedom:  Surge, Sway, Heave, Roll, Pitch all free Wings / control surface = -6.0 ft below free surface Sample TMS – 5 DOF Run With Cable, PITCH, HEAVE, SURGE, ROLL, YAW unconstrained, Simple PID