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NASA TAMDAR Development Tropospheric Airborne Meteorological Data Aviation Safety and SecurityReporting Program (TAMDAR) Case Studies of T, Q, and V for the 2003 ATReC First THORPEX Symposium December 6-10, 2004 Montréal, Canada Taumi Daniels1, John Murray1, Dan Zhou1, George Tsoucalas1, Robert Neece1, Phil Schaffner1, Dan Mulally2, Mark Anderson2, Kristopher Jensen2, Tony Grainger3, Dave Delene3 1 NASA Langley Research Center 2 AirDat, LLC. 3 University of North Dakota 1st THORPEX Symposium Montréal, Canada Outline Aviation Safety and Security Program • TAMDAR System Overview • Flight Profile • Case Study • Results •Summary 1st THORPEX Symposium Montréal, Canada TAMDAR Concept Aviation Safety and Security Program Icing Cockpit Display Temperature Pressure Altitude Humidity Time Ground Station Lat / Long Winds* Turbulence* True Airspeed* AirDat TAMDAR Other Aircraft Sensor *computed 1st THORPEX Symposium Montréal, Canada TAMDAR Sensor Aviation Safety and Security Program 1st THORPEX Symposium Montréal, Canada TAMDAR System Aviation Safety and Security Program 1st THORPEX Symposium Montréal, Canada TAMDAR Specifications Aviation Safety and Security Program Parameter Range Accuracy Resolution Temperature -70 to +55Cº +/-1Cº 0.1Cº Relative 0 to 100% RH +/- 5% < 136 m/s 1% Humidity +/-10% > 136 m/s Wind Speed +/- 3.1 m/s 0.51 m/s Wind Direction +/- 5º 1º Pressure 0-4.5 km +/-45.72 m 3.05 m Altitude 4.5 - 7.6 km +/-76.2 m 3.05 m Pressure 10-101 kPa 3 hPa 0.05 hPa True Airspeed 36-231.5 m/s +/- 2.1 m/s 0.51 m/s Turbulence 0 - 20 cm2/3 / sec N/A N/A Ice Detection 0.51 mm 1st THORPEX Symposium Montréal, Canada UND Cessna Citation II Aviation Safety and Security Program 1st THORPEX Symposium Montréal, Canada Case Study 12/05/2003 Aviation Safety and Security Program 1st THORPEX Symposium Montréal, Canada UND Citation Altitude, 12/05/2003 Aviation Safety and Security Program 9000 8100 7200 6300 5400 4500 3600 2700 Pressure Altitude, m 1800 900 0 15:32 15:36 15:40 15:44 15:48 Time, UTC 1st THORPEX Symposium Montréal, Canada UND Citation Airspeed, 12/05/2003 Aviation Safety and Security Program 150 120 90 60 True Air Speed, m/s 30 0 15:32 15:36 15:40 15:44 15:48 Time, UTC 1st THORPEX Symposium Montréal, Canada Temperature 12/05/2003 Aviation Safety and Security Program 0 Citation TAMDAR -10 -20 -30 Temperature, C -40 -50 15:32 15:36 15:40 15:44 15:48 Time, UTC 1st THORPEX Symposium Montréal, Canada Relative Humidity, 12/05/2003 Aviation Safety and Security Program 100 90 Citation TAMDAR 80 70 60 50 40 30 Relative Humidity, % 20 10 0 15:32 15:36 15:40 15:44 15:48 Time, UTC 1st THORPEX Symposium Montréal, Canada Wind Speed, 12/05/2003 Aviation Safety and Security Program 60 Citation TAMDAR 50 40 30 20 Wind Speed, m/s 10 0 15:32 15:36 15:40 15:44 15:48 Time, UTC 1st THORPEX Symposium Montréal, Canada Wind Direction, 12/05/2003 Aviation Safety and Security Program 360 Citation TAMDAR 315 270 225 180 135 90 Wind Direction, Degrees 45 0 15:32 15:36 15:40 15:44 15:48 Time, UTC 1st THORPEX Symposium Montréal, Canada Correlation Results Aviation Safety and Security Program Case Study Temperature Relative Wind Wind Day Humidity Speed Direction 12/3/2003 0.995 0.804 0.841 0.905 Entire Flight 12/5/2003 0.999 0.839 0.710 0.928 Take Off 12/8-9/2003 0.998 0.957 0.963 0.977 Correlation 12/13/2003 0.999 0.934 0.996 0.966 Sounding 12/14/2003 0.985 0.854 0.981 0.819 Sounding 1st THORPEX Symposium Montréal, Canada Temperature Results Aviation Safety and Security Program Case Study Day Mean ∆ (ºC)* STD ∆ (ºC) 12/3/2003 0.14 0.66 12/5/2003 -0.27 0.52 12/8-9/2003 0.57 0.21 12/13/2003 0.88 0.41 12/14/2003 0.33 1.8 *∆ is the difference in measurements 1st THORPEX Symposium Montréal, Canada Relative Humidity Results Aviation Safety and Security Program Case Study Day Mean ∆ (%) STD ∆ (%) 12/3/2003 6.3 16.3 12/5/2003 2.9 19 12/8-9/2003 -6.7 8.4 12/13/2003 -1.3 10.2 12/14/2003 -7.1 9.5 1st THORPEX Symposium Montréal, Canada Wind Speed Results Aviation Safety and Security Program Case Study Day Mean ∆ (m/s) STD ∆ (m/s) 12/3/2003 -0.89 4.4 12/5/2003 -0.11 1.3 12/8-9/2003 -0.41 1.9 12/13/2003 -1.8 1.7 12/14/2003 -0.57 4.2 1st THORPEX Symposium Montréal, Canada Wind Direction Results Aviation Safety and Security Program Case Study Day Mean ∆ (º) STD ∆ (º) 12/3/2003 -0.05 3.6 12/5/2003 -0.21 4.5 12/8-9/2003 -0.42 3.9 12/13/2003 3.2 4.3 12/14/2003 -1.1 8.6 1st THORPEX Symposium Montréal, Canada Summary Aviation Safety and Security Program • ATReC flight profiles of winter weather • Five case studies • TAMDAR sensor performed within specifications for temperature and winds in all cases • Three of five cases for relative humidity within specifications (RH calibration data extrapolation required) 1st THORPEX Symposium Montréal, Canada.
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