Stabilization and steering of a parabolic laser thermal thruster with an ignition device |
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| Institution: | 1. Institute of Technical Physics, German Aerospace Center (DLR), Pfaffenwaldring 38–40, Stuttgart, Germany;2. Institute of Space Systems (IRS), University of Stuttgart, Pfaffenwaldring 31, 70569 Stuttgart, Germany;1. School of Electric Power, Civil Engineering and Architecture, Shanxi University, Taiyuan 030006, China;2. School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, China;1. The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China;2. Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China;1. College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China;2. Academy of Military Medical Sciences, Academy of Military Sciences, Beijing 100850, China;3. Department of Geratology, the Third Xiangya Hospital, Central South University, Changsha 410013, Hunan, China;1. Pamukkale University, Tavas Vocational High School, Denizli, Turkey;2. Department of Advanced Technologies, Eskisehir Technical University, Graduate School of Sciences, Eskisehir, Turkey;3. Department of Biomedical Engineering, Pamukkale University, Denizli, Turkey;4. Department of Chemical Engineering, U?ak University, U?ak, Turkey;5. Chemistry Department, Pamukkale University, Denizli, Turkey;1. Key Laboratory of Hormones and Development (Ministry of Health), Tianjin Key Lab. of Metabolic Diseases, Tianjin Metabolic Diseases Hospital & Institute of Endocrinology, Tianjin Medical University, 300070 Tianjin, China;2. The Second Hospital of Tianjin Medical University, 300211 Tianjin, China;3. Department of Pathogen Biology, School of Basic Medical Sciences, Tianjin Medical University, 300070 Tianjin, China;4. Department of Gynecology and Obstetrics, Affiliated Tongji Hospital, Tongji University, Shanghai, China;5. School of Basic Medical Sciences, Tianjin Medical University, 300070 Tianjin, China;6. The First Affiliated Hospital of Jinzhou Medical University, 121000 Shenyang, China;1. Chevron, Area 52 Technology–ETC, 5 Bisbee Ct., Santa Fe, NM 87508, USA;2. School of Physics and Optoelectronic Engineering, Xidian University, Xi’an 710071, China;3. Collaborative Innovation Center of Information Sensing and Understanding, Xidian University, Xi’an 710071, China |
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| Abstract: | High energy pulses of a CO2 laser are focused in a parabolic mirror yielding to a laser-supported detonation. The generated thrust acting on the reflector as a bell nozzle is studied in multiple pulse free flight experiments with respect to axial, lateral and angular momentum coupling. The employment of an ignition pin on the reflector's axis of symmetry lowering the ignition threshold by several orders of magnitude is found to provide for a reproducible detonation process. The axial momentum coupling of each pulse is analyzed with respect to initial lateral offset and tilt during the flight. High speed analyses of recorded flights indicate that lateral momentum components occur re-centering the thruster on the beam. Thrust vector steering can be realized by tilt of the ignition pin inside the thruster, thus shifting the detonation. A design model of a laser-driven rocket including a remotely accessible steering gear was developed and tested successfully. |
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