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OUTLINE T&E Overview Helicopter/Ship Testing Dynamic Interface Support Options SoS Approach Virtual Flight Test Support Summary T&E Overview DoD Procurement Funds Current Cost of Rotorcraft Testing Becoming more expensive May uncover problems late in acquisition cycle

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Presentation Transcript
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OUTLINE

  • T&E Overview

  • Helicopter/Ship Testing

  • Dynamic Interface Support Options

  • SoS Approach

  • Virtual Flight Test Support

  • Summary


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T&E Overview

  • DoD Procurement Funds

  • Current Cost of Rotorcraft Testing

    • Becoming more expensive

    • May uncover problems late in acquisition cycle

  • Mission Rehearsal Training

    • OFT/WST Expensive

    • Far removed from battlefield site

  • Acquisition & Mishap Investigations

    • Not integrated with flight testing


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T&E Emphasis

  • Past – Cost and Cycle Time

  • Current –Interoperability & SoS

    • Interoperability

      • The ability of systems to provide services to and accept services from other systems

      • DoD 5000 series requires that all systems must be designed and tested to ensure interoperability

    • System-of-Systems (SoS)

      • A system working with a group of other systems or sub-systems in a seamless environment


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T&E Options

  • Business as usual - Conventional T&E

    • Introduction of personal computer in the 1980’s

    • Introduction of the WWW in the 1990’s

    • Cost & Cycle Time Problems

  • Combine Conventional T&E and Virtual T&E using related technology options

    • Develop and validate a virtual capability to support and enhance conventional T&E


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Land-Based Testing

  • US NAVY Test Pilot School (Conventional T&E)

  • Helicopter Performance

    • Hover, Level Flight, Climbs & Descent, Engine Assessment, &Airspeed/Altimeter Calibration

  • Flying Qualities

    • Longitudinal, Lateral, & Directional Static & Dynamic Stability, Flight Control System, Rotor Characteristics & Open Loop Testing


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T&E Environment Control

  • Land-Based – Can Control

    • Use of highly instrumented aircraft

    • Test schedule

    • Repeat test as required

  • Ship-Based – Cannot Control

    • Instrumentation in fleet aircraft

    • Test schedule (Usually plan well in advance)

    • Ambient winds and sea-state

    • Number of repeat tests required


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US Maritime Rotorcraft(Approx # of squadrons, # per squadrons)

SH-60B (12/12)

SH-60F (8/12)

AH-1W (9/18)

MV-22B

CH-46 (20/12)

UH-1N (9/9)

HH-60H (11/4)

CH-53E (7/16)

SH-2G (2/6)

HH-60J (8/4)

HH-65 (16/5)

SH-3H (30/3)

MH-53E (2/12)


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US Navy Ships

USN = Approximately 300 total ships

4 aircraft carrier classes ~ 13 ships

5 surface combatant classes ~ 141 ships

4 amphibious ship classes ~ 36 ships

20 support ship classes ~ 85 ships

9 non-helo capable classes ~ 40 ships

(+41 USCG cutters in wartime)



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Helicopter/Ship Dynamic Interface Test Scope Challenges

Launch/Recovery Envelope Development Tests

Hangar Compatibility Tests

Vertical Replenishment

Tests

Ship Motion Tests

Interservice Compatibility Tests

Shipboard Compatibility Tests

Deck Lighting

Compatibility Tests

Procedural Compatibility Tests

Stores/Deck Clearance Tests


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AIRCRAFT/SHIP TEST SYSTEMS Challenges

  • General

    • Aircraft (Geometry, rotors, flight controls, etc)

    • Ship (Geometry, airwake, motion, deck layout)

  • Specific

    • Day & Night Launch/Recovery

    • Helicopter Deck Handling/Securing

    • Rotor Engage/Disengage

    • Visual Landing Aids/Markings

    • Vertical Replenishment



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DI Analytic Options Challenges

  • Aircraft

    • Comprehensive real & non-real time codes

    • Aircraft specific codes & reduced order models

  • Ship Airwake

    • Computational Fluids Dynamics & Wind Tunnel

  • Ship Motion

    • Navy Carderock Program & Summed Sine Waves

  • Integration Options

    • Linear superposition

    • Loose & tight coupling





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