April 16, 1996

Mission Objective

T-39 Flight 03

• Produce contrails for in situ sampling by the DC-8

Flight Log

TAKEOFF/LANDING:
The T-39 separted SLN at 16:59UTC and returned at 20:06UTC

FLIGHT REPORT:
The T-39 flew to a position 10mi. west of the CART site and executed a series of 10mi. diameter circles at 35, 37, and 39kft.

METEOROLOGY-REPORT:
Fairly dense cirrus at 29-30kft. Patchy cirrus at 32-36kft. Contrails were persistent only in regions of cirrus.

INSTRUMENT STATUS:

• CIMS - Not yet operational
• MS - Met/Nav system - WORKED
• AMS - Air Motion Sensor - WORKED
• NDIR - CO2 - WORKED
• 3760 - fine CN - WORKED
• 3025 - ultra fine CN - WORKED
• FSSP - 0.3-20um aerosols - WORKED
• PCASP - 0.1-3um aerosols - WORKED

Highlights

• Accomplished low altitude rendezvous with the DC-8 and satisfactory formation flight.
• Made several dozen crossings of the DC-8 plume at separations of 0.8 to 8 miles.
• Observed large concentrations of volatile ultra fine particles at all distances behind the DC-8.

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