Advanced Experiment of Sonic Booms
We are very pleased to announce that two successful drop tests were performed within a four weeks window, says Dr. Kenji Yoshida, Project Manager of D-SEND Project Team. SSC's cooperation made everything possible and from a quick data review we appear to have good data.
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We are happy to state that the performance of these complicated tests went according to plan, says Mr. Mikael Toyra, Project Manager at Esrange Space Center. Each gondola released two heavy drop models in quick succession, making SSC the first to drop such heavy objects from a single balloon in sequence.
The experimentThe D-SEND#1 experiment demonstrates a reduced sonic boom for aircraft with a non-conventional shape by releasing drop models from a high altitude (20-30 km) so that they reach supersonic speeds and produce sonic booms. The drop models include electronics that measure their motion, while a microphone system at lower altitudes (0-1 km) records the sonic booms.
SSC engineeringSSC's engineers have developed the balloon gondola and four drop models according to JAXA's specifications. Three of the drop bodies were equipped with an inertial measurement system and onboard telemetry system that downlinked real time data to the customer. JAXA used their own developed recording system on ground with microphones in the field.
The two drop tests were performed from Esrange Space Center, SSC's operational base for launch services.
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Source : SSC Group