May 7, 1996

Mission Summary

T-39 SUCCESS flights #14 and #15 (scientist: Bruce Anderson)

Mission Objective

sample the 757 exhaust emissions as it burned different fuels in its left and right engine

Flight Log

TAKEOFF/LANDING
The T-39 left Salina at 18.05 UTC (13.05 noon local time) and landed at Ellsworth AFB at 20.22 UTC (flight #14).
The T-39 left Ellsworth AFB at 21.43 UTC and returned to Salina at 23.47 UTC (flight #15).

FLIGHT REPORT
The T-39 departed Salina and sampled the 757 exhaust during the ascent as well as on the racetrack flight-pattern, which was set up between 35000 and 37000 ft over Nebraska.
After refueling at Ellsworth AFB, the T-39 rejoined the 757, still on the same racetrack pattern over Nebraska. The T-39 continued to sample the 757 emissions at a range of distances behind the 757 and including the 757 descent into Salina.

METEOROLOGY-REPORT
see DC-8 flight report

INSTRUMENT STATUS

• MS-Nav/Met System: no problems
• AMS - Air Motion/Dynamics: no problems
• NDIR - CO2: no problems
• 3760 - Fine CNCs: no problems
• 3025 - Ultrafins CNCs: no problems
• FSSP - Forward Scatt Probe: NOT OPERATIONAL
• PCASP - Passive Cav Probe: no problems
• CIMS - Mass Spectrometer: no problems

Mission Highlights

• obtained 757 exhaust samples at 0.1 to 25km separation under varying conditions of contrail formation
• much higher ultrafine particle production in the plume burning high sulfur fuels