1 / 18

NASA B-757 Turbulence Flight Experiment Setup

WxAP Flight Test Director & observer. Technology Transfer (AWIN/EWxR). In Situ Pallet & Displays. Radar Pallet & Displays. Flight Management & Flight Systems Interfaces. Video Recording & Telemetry. I/O Concentrator. ONYX Operator Station. Flight Test Director. SGI ONYX

mei
Télécharger la présentation

NASA B-757 Turbulence Flight Experiment Setup

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. WxAP Flight Test Director & observer Technology Transfer (AWIN/EWxR) In Situ Pallet & Displays Radar Pallet & Displays Flight Management & Flight Systems Interfaces Video Recording & Telemetry I/O Concentrator ONYX Operator Station Flight Test Director SGI ONYX Computer Power Flight Deck Research Station Transport Research System (TRS) NASA B-757 Turbulence Flight Experiment Setup

  2. Turbulence severity transmissions “auto PIREP’s” (thresholded onboard receiving aircraft) On-board aircraft systems: - turbulence hazard metric - eddy dissipation rate measurement Tactical Products reported/forecast turbulence updates Communications Network eddy dissipation rate Strategic Products AOC, Dispatch, ATC, FBO: - forecast/reported turbulence - location and severity NWS, FSS “Free Wx” (e.g., RUC-2) Turbulence forecast models Turbulence Product Integration in Communications Infrastructure • Improved situational awareness of turbulence hazards • Improved turbulence forecast/warnings

  3. In Situ Flight Experiment Data Analysis • Data quality assessment • Wind recovery algorithms • Eddy dissipation rate algorithms • Distributed load analysis

  4. In Situ Flight Experiment Data Analysis:Preliminary Findings • All in situ algorithms have been “shaken out” and verified to be working correctly • On board air data system capable of making acceptable turbulence measurements • Several (>12) events encountered providing an excellent database for algorithm assessment and development • Initial assessment of aircraft flexibility effects on distributed loads underway

  5. Flight 190Event 6 Characteristics • Altitude : 24,000 ft • Mach: 0.67 • Weight Average: 183,200 lbs • Airspeed: TAS-215 m/s Indicated- 290 kts • e1/3 peaks: 0.5 to 0.8 m2/3/s • c.g. peaks: +0.75g / -1.3g • sDn peaks: 0.35 g • sWg peaks: 4.4 m/s • Roll on run start, heading changes throughout run

  6. RMS Normal Load - Flight 190

  7. Recovered Vertical GustFlight 190-06

  8. C.G. Normal Acceleration [+up]Flight 190-06

  9. Eddy Dissipation Rate from NCAR AlgorithmFlight 190-06

  10. R.M.S. Vertical Gust & R.M.S. Normal LoadFlight 190-06

  11. Flight 191Event 6 Characteristics • Altitude : 33,000 ft • Mach: 0.76 to 0.78 • Weight Average: 177,700 lbs • Airspeed: TAS-235 m/s Indicated- 275 kts • e1/3 peaks: 0.7 to 0.8 m2/3/s • c.g. peaks: +0.80g / -1.5g • sDn peaks: 0.44 g • sWg peaks: 9.8 m/s • Roll maneuvers at end [on escape vector] • 200 ft drop in altitude on R.M.S. Normal Load spike

  12. RMS Normal Load - Flight 191

  13. Recovered Vertical GustFlight 191-06

  14. C.G. Normal Acceleration [+ up]Flight 191-06

  15. Eddy Dissipation Rate from NCAR AlgorithmFlight 191-06

  16. R.M.S. Vertical Gust & R.M.S. Normal LoadFlight 191-06

More Related