Aircraft HCl Sampling of the Titan IV K-23 Launch Effluent Cloud.
AEROSPACE CORP EL SEGUNDO CA TECHNOLOGY OPERATIONS
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On 14 May 1995 at 0945 EDT 1345Z, the Titan IV K-23 mission was successfully launched from SLC-40 at CCAS. This report describes the reduction of data from an aircraft plume sampling campaign overseen by 45SPW that involved Air Force, NOAA and contractor organizations. A modified commercial total HCl gaseous and aerosol monitor Geomet Model 401B, mounted in a Piper Seminole aircraft, performed post-launch sampling around SLC-40 for 100 minutes following the launch. The data consist of measured HCl concentration versus aircraft GPS location. Data are reported here in several alternative graphical formats to facilitate comparison with modeling and with plume imagery. After a brief overview of the sampling campaign, detailed information is provided for sequential 10 minute time windows. During the first 20 minutes following the launch, 3-D plume imaging documented the track and shape of the effluent ground cloud. Comparison of those imagery data to the aircraft sampling has been reported separately. The stabilized ground cloud as defined by imagery yielded aircraft sampling hits in the northeast quadrant referenced to SLC-40. Dispersal of the narrow launch column attached to the southern end of the ground cloud appears to be responsible for higher altitude aircraft hits in the southeast quadrant. The K-23 results are compared to previous aircraft sampling data from Titan III and STS launches from CCAS acquired by NASA Langley Research Center.
- Inorganic Chemistry
- Physical Chemistry
- Guided Missiles