Design and Testing of a Green Bipropellant Thruster for Satellite Propulsion

Design and performance of a hybrid fast and thermal neutron detector Singh, M. K.; Sonay, A.; DENİZ, MUHAMMED; Agartioglu, M.; Asryan, G.; Kumar, G. Kiran; Li, H. B.; Li, J.; Lin, F. K.; Lin, S. T.; Sharma, V.; Singh, L.; Singh, V.; Subrahmanyam, V. S.; Soma, A. K.; Wong, H. T.; Yang, S. W.; Yildirim, I. O.; Yue, Q.; Zeyrek, Mehmet Tevfik (2017-10-01) We report the characterization, calibration and performance of a custom-built hybrid detector consisting of BC501A liquid scintillator and BC702 scintillator for the detection of fast and thermal neutrons, respectively. Pulse Shape Discrimination techniques are developed to distinguish events due to gamma-rays, fast and thermal neutrons. Software analysis packages are developed to derive raw neutron energy spectra from measured proton recoil spectra. The validity is demonstrated through the reconstruction o...
Design and development of an internet telephony test device Çelikadam, Turgut; Ergül, Faruk Rüyal; Department of Electrical and Electronics Engineering (2003) The issues involved in Internet telephony (Voice over Internet Protocol (VoIP) device) can be best understood by actually implementing a VoIP device and studying its performance. In this regard, an Internet telephony device, providing full duplex voice communication over internet, and a user interface program have been developed. In the process, a number of implementation issues came into focus, which we have touched upon in this thesis. Transport layer network protocols are discussed in the concept of real...
Design and development of a radio frequency energy harvester for low-power sensors Özdemir, Huriye; Nesimoglu, Tayfun; Sustainable Environment and Energy Systems (2019-1) This thesis presents a systematic design and implementation of a rectenna. As a beginning, a receiving antenna is proposed. In the design of the receiving antenna, a fractal topology is utilized to widen the antenna bandwidth. Moreover, a rectifier circuit with a proposed dualband matching technique is realized to aggregate the DC power. Ultimately, the broadband fractal antenna and the proposed dual-band rectifier circuit have been assembled to realize the rectenna. In addition, a simple RF spectrum study ...
Design and evaluation of a helicopter main rotor electrohydraulic control system Düzağaç, Hasan Ali; Çalışkan, Hakan; Balkan, Raif Tuna; Department of Mechanical Engineering (2022-8-26) Helicopters are widely used aircrafts for several purposes. Main Rotor of a Helicopter creates necessary flight forces for performing flight operation. Orientation of a Helicopter Rotor System is determined and controlled manually by pilot and automatically by automatic control system via hydraulically operated flight control actuators. In this research, a novel electrohydraulically operated helicopter main rotor control system is mathematically designed and developed to improve overall performance of contr...
Design and experimental testing of an adsorbent bed for a thermal wave adsorption cooling cycle Çağlar, Ahmet; Yamalı, Cemil; Baker, Derek Keıth; Department of Mechanical Engineering (2012) Poor heat and mass transfer inside the adsorbent bed of thermal wave adsorption cooling cycles cause low system performance and is an important problem in the adsorbent bed design. In this thesis, a new adsorbent bed is designed, constructed and tested to increase the heat and mass transfer in the adsorbent bed. The adsorbent bed is constructed from a finned tube in order to enhance the heat transfer. Additionally, the finned bed geometry is theoretically modeled and the model is solved time dependently by ...

Citation Formats

Ç. Yılmaz, M. Bayramoğlu, M. Göçmen, and A. Ulaş, “Design and Testing of a Green Bipropellant Thruster for Satellite Propulsion,” 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/69354.