1. Status of P3DWL for T-PARC and TSC-08
G. D. Emmitt
Simpson Weather Associates
July 8, 2008
WG, Wintergreen, VA

2. P3DWL for TPARC/TCS-08 1.6 um coherent WTX (ARL/LMCT)
10 cm bi-axis scanner (NASA)
P3 and other parts (NRL)
Analyses software (SWA/CIRPAS)

3. Mission Plan
Study of tropical cyclogenesis, intensification, transition and demise
Based out of Guam
Other aircraft include USAF C130 and DLR Falcon
P3: dropsondes, ELDORA and P3DWL
C130: dropsondes
Falcon: dropsondes, DWL
Use ferry flights to collect long curtains of wind soundings to test data impact on NWP.
Pax River to Whidbey Island
Whidbey to Hawaii
Hawaii to Guam

4. Guam

5. P3DWL Status Pre-installation lab test conducted April,2008
Pre-installation scanner tests conducted in March
Post installation ground tests 4 -6 June.
Scanner worked and then failed
Returns from atmosphere achieved
Ferry flight Pax River – Boulder
No signal after takeoff
Scanner remained inoperative

6. P3DWL Status P3 currently in NCAR hanger in Boulder
Scanner problem found to be binding due to dust ring and aerodynamic wipers
Fix was found and scanner now performs well
Transceiver was removed and sent to LMCT
Transceiver OK
Alignment with telescope not OK; suspect is the 17 and 57 Hz P3 engine vibration
Mounting for transceiver was redesigned and parts ordered.
Reinstallation expected this week
Next test flight scheduled for 11 July
LMCT person will fly with the system

7. Operator’s schedule Dan Carre’, Simpson Weather Associates
July ferry flight Pax river to Guam
1 -17 August in Guam
Michael Riemer, Naval Post Graduate School
15 – 31 August
Brian Tang, Massachusetts Institute of Technology
28 – 15 September
CDR Dan Eleuterio, NRL/ONR
13 September – 3 October