“There’s been a lot of people looking at this, looking at the approach, looking at the design,” said Raymond “Jim” Lanzi, chief engineer for NASA’s Sounding Rockets Program Office. Brad Wheaton, who also served as the principal investigator on BOLT I, spot-checked the students’ analysis on BOLT II, as well as examined the flight stability of BOLT II with the lessons learned from BOLT I. “The NASA team really held our feet to the fire in terms of flight stability,” commented Bowersox.Ī John Hopkins University Applied Physics Laboratory (JHUAPL) team, led by Dr. #Nasa wallops launch full#TAMU graduate students provided computational fluid dynamics aerodynamic database of the full rocket stack, which was the input for the flight stability analyses carried out by NASA Wallops. “There was a tremendous amount of flight stability work that took place in the design of the BOLT II flight system.” Because of the atypical geometry, a close collaboration between the Department of the Air Force, TAMU, CUBRC, and the NASA teams was required. Popkin was all over the flight stability, wanting to know exactly what happened to help avoid repeating for BOLT II,” said Bowersox. Rodney Bowersox, professor of aerospace engineering, serving as lead PI. Texas A&M University (TAMU), which had consulted on BOLT I, led the science mission as the principal investigator organization on BOLT II, with Dr. Like its predecessor, BOLT II benefits from a multi-collaborative approach involving government, academia and industry organizations, with many of the same players, using simulations, ground testing and flight data. While the BOLT I transition flight experiment did not perform as hoped, Popkin said that everything they learned from the telemetry data collected has been analyzed for BOLT II by several organizations. Heat is the mother of all problems for hypersonics.” Turbulence can cause heat to evolve over almost the entire vehicle surface, and so now you're having to worry about protecting internal electronics and things like that, from that heat, and being able to understand and predict the turbulence associated with the heating will help us design better hypersonic vehicles. “There's a lot of heat that happens right at the very leading edge, but that's all in a very focused area. “Turbulent flow drives up the heat over the largest portion of the vehicle,” Popkin said. Sarah Popkin, who oversees BOLT II as AFOSR’s Program Officer for High-Speed Aerodynamics. “Boundary layer transition and turbulence are both complex phenomena that are very difficult to study because we cannot replicate very well on the ground,” said Dr. Specifically, the desire is to better enable prediction and control of viscous drag and heating on hypersonic vehicles. The goals of the AFRL/AFOSR BOLT flight experiments are to collect scientific data to better understand Boundary Layer Transition (BOLT) and Turbulence (BOLT II) during hypersonic flight. Officials at NASA Wallops project the launch to be visible anywhere from 10 to 120 seconds from parts of seven states: Virginia, Maryland, Delaware, New Jersey, North Carolina, Pennsylvania, and West Virginia as well as Washington, D.C. Live coverage of the launch will be provided on NASA Wallops YouTube channel. WRIGHT-PATTERSON AIR FORCE BASE, Ohio (AFRL) – A launch of a two-stage suborbital sounding rocket for the Air Force Research Laboratory/ Air Force Office of Scientific Research’s BOLT II flight experiment is set to take place the evening of March 21 at the National Aeronautics and Space Administration (NASA) Wallops Flight Facility in Virginia. By Air Force Research Laboratory Public Affairs
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