TY - GEN
T1 - Reduction of Sonic Boom Signature Using Energy Deposition
AU - Knight, Doyle
N1 - Funding Information:
This research was supported by NASA Langley Research Center through the National Institute of Aerospace under NIA Task 601042. The task managers are Moazzam Jangda and Catherine Mcginley. Special thanks also to Stephen Wilkinson for his advice.
Publisher Copyright:
© 2022, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
PY - 2022
Y1 - 2022
N2 - The effect of a continuous energy deposition on the ground pressure PLdB (Perceived Loudness in decibels) for the AXIE geometry at Mach 2 and 10 km altitude is examined. The simulation is performed in three steps. First, the steady flowfield generated by the interaction of a continuous upstream heated region with the Axisymmetric Equivalent Area (AXIE) geometry is computed using the Navier-Stokes equations. Second, the pressure distribution at a radial distance 100R is extracted and input to the sBOOM code to propagate the pressure signal to the ground. Third, the ground pressure signal is input to the PyLdB code to calculate the PLdB. Three configurations of energy deposition are examined with the largest reduction of 6.4 dB. The power required is substantial and likely impractical.
AB - The effect of a continuous energy deposition on the ground pressure PLdB (Perceived Loudness in decibels) for the AXIE geometry at Mach 2 and 10 km altitude is examined. The simulation is performed in three steps. First, the steady flowfield generated by the interaction of a continuous upstream heated region with the Axisymmetric Equivalent Area (AXIE) geometry is computed using the Navier-Stokes equations. Second, the pressure distribution at a radial distance 100R is extracted and input to the sBOOM code to propagate the pressure signal to the ground. Third, the ground pressure signal is input to the PyLdB code to calculate the PLdB. Three configurations of energy deposition are examined with the largest reduction of 6.4 dB. The power required is substantial and likely impractical.
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U2 - 10.2514/6.2022-0096
DO - 10.2514/6.2022-0096
M3 - Conference contribution
AN - SCOPUS:85122584317
SN - 9781624106316
T3 - AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022
BT - AIAA SciTech Forum 2022
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022
Y2 - 3 January 2022 through 7 January 2022
ER -