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Progress in Weather Observations

Progress in Weather Observations. Friends/Partners in Aviation Weather Forum October 23, 2002. Paul Stough NASA Langley Research Center. In-situ weather reporting In-flight turbulence detection Satellite remote observations. Progress in Weather Observations.

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Progress in Weather Observations

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  1. Progress inWeather Observations Friends/Partners in Aviation Weather Forum October 23, 2002 Paul Stough NASA Langley Research Center

  2. In-situ weather reporting In-flight turbulence detection Satellite remote observations Progress in Weather Observations

  3. TAMDAR - Tropospheric Airborne Meteorological Data Reporting Objective: Sense and report Moisture Temperature Winds Turbulence Ice for use by Forecast models Weather briefers Controllers Other aircraft Jet Transports MDCRS 25,000 ft. MSL TAMDAR Ground Level

  4. TAMDAR - Tropospheric Airborne Meteorological Data Reporting Accomplishments: • Partnership with FAA & NOAA • Concept of Operations • Requirements • Feasibility Study Derived Measured Altitude Airspeed Turbulence Winds Ice Accretion Rate Pressure Temperature Humidity Ice Developed with Georgia Tech Research Institute and Optical Detection Systems

  5. TAMDAR Status • Humidity sensor technology development • Improved capacitive sensor evaluation • MEMS hygrometer evaluation • MEMS chilled mirror design and testing • Long-term validation ongoing in humidity chamber • Flight tests ongoing • Final design modifications leading to pre-production sensor fabrication in 2003 • Operational Evaluation in 2004

  6. TAMDAR Flight TestsNASA Twin Otter Icing Research Airplane • Initial tests Jan 2002 • Additional flights planned for Nov 2002 TAMDAR Sensor

  7. TAMDAR Flight TestsUND Cessna Citation II • Initial flights Jan 2002 • Additional flights Aug-Oct 2002

  8. TAMDAR Flight Tests • Test flights began Oct 2001 • Long term testing • Still operational Test flights FY 2003 • Shakedown • Calibration • Demonstration • Inter-comparison ODS Beech Bonanza NASA Cessna 206H

  9. Turbulence Detection Objective: Develop in-flight turbulence detection technologies • Accomplishments: • Evaluated Lidar-based system on NASA DC-8 • Validated in-situ based algorithms on NASA B-757 • Validated radar-based detection algorithm on NASA B-757 • Defined technology certification path

  10. Radar-based Turbulence Warning Display Display showing radar-predicted hazard metric in background with actual hazard experienced on flight path through turbulent region

  11. Turbulence Detection Status • Complete aircraft turbulence warning experiment at CAMI • Determine warning time for wide-body cabin • Focusing on passenger and flight attendant behavior • Conduct flight experiments spring 2003 on NASA B-757 • Focus on in-situ systems and aircraft-to-aircraft links • Use research radar to predict and record turbulence encounters • Finalize warning system certification process with FAA

  12. ASAP Advanced Satellite Aviation-weather Products GIFTS Next-Generation Sounder High resolution 1 nm horizontal 3,000 ft vertical 15 min temporal Storm detection 2-4 hr before clouds form

  13. Objectives: Utilize satellite weather observations and soundings to improve aviation weather reports and forecasts Prepare for next generation of high resolution weather satellites ASAP Advanced Satellite Aviation-weather Products

  14. Accomplishments: Funded by both NASA Aviation Safety Program and Earth Sciences Enterprise Partnered with FAA Aviation Weather Research Program Identified target weather products Convective weather In-flight icing Turbulence Oceanic weather In-flight winds Initiated benefits study Begin data collection and product development in 2003 ASAP Status

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