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Honeywell

Honeywell. Program Status Certification Process Plan for NASA Deliverables Weather Models Data ADWRS 5.0 Flight Deck Study NASA Flight Test. Program Status - Certification Logistics. TSO - Weather Radar C63c Capability to do full alerting Disable annunciation in SW Convair STC

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Honeywell

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  1. Honeywell • Program Status • Certification Process • Plan for NASA Deliverables • Weather Models Data • ADWRS 5.0 • Flight Deck Study • NASA Flight Test

  2. Program Status - Certification Logistics • TSO - Weather Radar C63c • Capability to do full alerting • Disable annunciation in SW • Convair STC • Demo full alerting • Data Recording Period • Non-Interference STC for revenue service • External (FDAMS) interface via Hazard bus • RDR-4B STC for revenue service

  3. Program Status - Certification Schedule 4th NASA FAA Turb Workshop Revenue Flights Data Collection Submit for TSO Feb ‘02 June ‘02 Aug ‘02 Q2 ‘02 Apr ‘02 Convair STC Jan ‘03 Meet with FAA to discuss Cert plan Q3 ‘02 High Altitude Test flight RDR-4B STC

  4. Radar Spectra (square root of 2nd moment estimate) range = r azimuth =  elevation =  For isotropic turbulence g-load Threshold ? Predicted rms g load Certification Process - Front End Simplified signal processing (to predict sigma-g for alerting) Pulse Volume Correction Factor 2nd Moment Estimator (square root of estimated wind variance) Sensor manufacturer defined Airplane Response Model Predicted g load “hit” at r,, Industry/Government defined

  5. Certification Model Needs • Honeywell needs Industry/FAA/NASA to provide— • Functional Requirements • Advisory Circular or equivalent (RTCA standards) • Turbulence alert scoring method based on atmospheric truth • Weather models with atmospheric truth • Sigma-w (preferred) or EDR truth or method to derive • at 25 m grid spacing (one more file?) • Explanation of sub-grid merge process • Define/Justify acceptable aircraft model complexity • Algorithm to estimate weight per flight hour

  6. Certification Methodology Dealing with a statistical phenomenon - NOT the same as Windshear (1) Turbulence Events/ Scenarios— Weather Models and Path (2) Radar Simulation (3) Radar Algorithm HW requests either atmospheric truth, i.e. EDR or Sigma-w for sub-grids OR agreed upon process for transformation of 3D wind fields into sigma-w Built into the definition of the icon/alert employed by HW (4) Aircraft Specific Test Criteria (6) Comparative Analysis & Statistics (5) Aircraft “Truth” Fields Truth reference is critical. Prefer truth based on what Radar can measure in the atmosphere, not including noise from aircraft response model. Path definition ?

  7. Plan for NASA Deliverables - WX Model • Run Current algorithm against 191-06 • Use different paths • Start building methodology for use in Certification • need bench mark using proposed models?/NASA algorithm (BLK 3) • How many scenarios?

  8. Plan for NASA Deliverables - ADWRS 5.0 • Honeywell will use a validated tool to support analysis/certification • Options • Use clutter/Wx integration program (based on ADWRS 3.0) • Use ADWRS 5.0 as baseline • will it be validated? • Use internal HW high fidelity radar simulation tool

  9. Plan for NASA Deliverables - FD Study • Very interested • Honeywell intends to evaluate and incorporate the findings into turbulence alerting system for revenue STC • Our initial demo will have what we think the best alerting scheme should be • Initial revenue data collection will not have alerting active (SW disabled)

  10. Plan for NASA Deliverables - FT Results • Looking for suggestions on what works and what doesn’t • Trade studies • Recommendations

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