VIKING PARACHUTE TEST - AV4 (Supersonic)

Balloon launched on: 8/13/1972 at 13:40 utc
Launch site: Roswell Industrial Air Center, New Mexico, US  
Balloon launched by: Air Force Cambridge Research Laboratories (AFCRL)
Balloon manufacturer/size/composition: Zero Pressure Balloon Tow 356.000 cuft (0.5 Mil) Main: 34.600.000 (0.33 Mil.)
End of flight (L for landing time, W for last contact, otherwise termination time): 8/13/1972
Balloon flight duration (F: time at float only, otherwise total flight time in d:days / h:hours or m:minutes - ): 3 h

• Balloon launched decelerator test program, post-test test report. BLDT vehicle AV-4 Martin Marietta Corp.; Denver, CO, United States (1973)
• Balloon launched decelerator test program: Post-test test report NASA Technical Report (1972)
• Balloon launched Viking decelerator test program Martin Marietta Corp.; Denver, CO, United States (1973)
• Flight tests of Viking parachute system in three Mach number regimes. 1: Vehicle description, test operations, and performance NASA Technical Report (1974)
• Flight tests of Viking parachute system in three Mach number regimes. 2: Parachute test results NASA Technical Report (1974)
• Balloon Flight Record Nº 44, National Center for Atmospheric Research, Summer 1972 - StratoCat's private collection
• Parachute deployment parameter. Identification based on an analytical simulation of Viking BLDT AV-4 NASA Technical Note Nº D-7678 (1974)
• Postflight simulation of parachute deployment dynamics of Viking qualification flight tests NASA Technical Note Nº D-7415 (1973)