TY - GEN
T1 - Investigations on Sonic Boom Mitigation Effect for Supersonic Transport Based on Quiet Spike
AU - Li, Zuo Tai
AU - Chen, Shu Sheng
AU - Che, Shi Qi
AU - Liu, De Yuan
AU - Zeng, Pin Peng
AU - Jia, Mu Liang
AU - Gao, Zheng Hong
N1 - Publisher Copyright:
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.
PY - 2024
Y1 - 2024
N2 - Sonic boom is one of the obstacles restricting the development of Supersonic Transport (SST). This work investigates the effect and law of Quiet Spike, one method of sonic boom passive mitigation. Based on JAXA Wing Body (JWB), the sonic boom mitigation effect of different lengths, diameters and stage numbers of Quiet Spike is studied by using CFD method in the near field and Augmented Burgers Equation method in the far field. Quiet Spike transforms the bow-shaped strong shock at the nose of JWB into multiple oblique shocks, which causes the secondary or multiple overpressure phenomenon in the far field. Single-stage Quiet Spike has critical length and critical diameter that can minimize sonic boom intensity, the mechanism and the law of which are explained briefly below: (a) short Quiet Spike yields a large initial overpressure, due to that its shock tends to be merged with the fuselage shock completely during the propagation; (b) long Quiet Spike leads to a large secondary overpressure, because its shock has little influence on the fuselage shock due to the distance; (c) thin Quiet Spike results in a large initial overpressure, as there is a strong shock at the Quiet Spike and fuselage joint; (d) thick Quiet Spike produces large initial and secondary overpressures at the same time, on account of that it causes a strong shock and has a limited effect on the fuselage shock due to the large shock angle; (e) it is calculated that the single-stage Quiet Spike of JWB has the critical length of 7.27 m and critical diameter of 400 mm. With the increasement of Mach number, the critical length of single-stage Quiet Spike increases at first and then decreases, presenting a design rule of cubic function. Multi-stage Quiet Spike produces multiple oblique shocks and causes the multiple overpressure phenomenon in the far field, mitigating sonic boom intensity further. The result can provide a guidance for the design of Quiet Spike of Supersonic Transport with practical significance.
AB - Sonic boom is one of the obstacles restricting the development of Supersonic Transport (SST). This work investigates the effect and law of Quiet Spike, one method of sonic boom passive mitigation. Based on JAXA Wing Body (JWB), the sonic boom mitigation effect of different lengths, diameters and stage numbers of Quiet Spike is studied by using CFD method in the near field and Augmented Burgers Equation method in the far field. Quiet Spike transforms the bow-shaped strong shock at the nose of JWB into multiple oblique shocks, which causes the secondary or multiple overpressure phenomenon in the far field. Single-stage Quiet Spike has critical length and critical diameter that can minimize sonic boom intensity, the mechanism and the law of which are explained briefly below: (a) short Quiet Spike yields a large initial overpressure, due to that its shock tends to be merged with the fuselage shock completely during the propagation; (b) long Quiet Spike leads to a large secondary overpressure, because its shock has little influence on the fuselage shock due to the distance; (c) thin Quiet Spike results in a large initial overpressure, as there is a strong shock at the Quiet Spike and fuselage joint; (d) thick Quiet Spike produces large initial and secondary overpressures at the same time, on account of that it causes a strong shock and has a limited effect on the fuselage shock due to the large shock angle; (e) it is calculated that the single-stage Quiet Spike of JWB has the critical length of 7.27 m and critical diameter of 400 mm. With the increasement of Mach number, the critical length of single-stage Quiet Spike increases at first and then decreases, presenting a design rule of cubic function. Multi-stage Quiet Spike produces multiple oblique shocks and causes the multiple overpressure phenomenon in the far field, mitigating sonic boom intensity further. The result can provide a guidance for the design of Quiet Spike of Supersonic Transport with practical significance.
KW - Augmented Burgers Equation
KW - Quiet Spike
KW - Sonic boom mitigation
KW - Supersonic Transport
UR - http://www.scopus.com/inward/record.url?scp=85200451218&partnerID=8YFLogxK
U2 - 10.1007/978-981-97-4010-9_34
DO - 10.1007/978-981-97-4010-9_34
M3 - 会议稿件
AN - SCOPUS:85200451218
SN - 9789819740093
T3 - Lecture Notes in Electrical Engineering
SP - 457
EP - 472
BT - 2023 Asia-Pacific International Symposium on Aerospace Technology, APISAT 2023, Proceedings - Volume II
A2 - Fu, Song
PB - Springer Science and Business Media Deutschland GmbH
T2 - Asia-Pacific International Symposium on Aerospace Technology, APISAT 2023
Y2 - 16 October 2023 through 18 October 2023
ER -