Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 91 for “"Launch Vehicle"”.
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Estimating launch vehicle trajectories and atmospheric emissions
Launch vehicles enable Earth observation, navigation or space exploration. In doing so, they cause direct anthropogenic emissions in the troposphere and above. This comes with an environmental cost. They can emit carbon dioxide (CO2), water vapor, chlorine, aluminum oxide, black carbon and nitrogen …
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Modeling Launch Vehicle Success Using Artificial Neural Networks
<p>Expendable launch vehicles in the United States currently have a reliability of 92%. The failures that do occur cost millions of dollars in spacecraft replacement, lost revenue, and other expenses. These costs are passed on in higher insurance rates and launch vehicle price. If the launch …
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Unidirectional active acoustic control for launch vehicle fairings
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2000.
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Controller Design for a Swirl Injection Hybrid Launch Vehicle
… on the design of controllers for stabilizing a launch vehicle with an internally originating torque. The motivation for this research arises from the new development of rocket engines which swirl combustion gases to gain combustion stability benefits, and in the case of hybrid rocket engines, …
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Stochastic Methods for Robust Design of Launch Vehicle Structures
… thin-shelled structures, commonly used on launch vehicles such as the Ariane family, has been widely studied since the 1930s. Research in this area has resulted in a variety of analytical and empirical design procedures to account for the diminished buckling loads of such shells. Some …
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The impact of launch vehicle constraints on space system design
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics; and, (S.M.)--Massachusetts Institute of Technology, Technology and Policy Program, 2001.
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A Legendre Pseudospectral Method for rapid optimization of launch vehicle trajectories
A Legendre Pseudospectral Method for launch vehicle trajectory optimization, pro posed by Mike Ross and Fariba Fahroo of the Naval Postgraduate School, is presented and applied successfully to several launch problems. The method uses a Legendre pseudospectral differentiation matrix to discretize …
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Durable Sandwich Structure Joining Technology for NASA's Ares V Launch Vehicle
… segments, typical in state of the art aerospace launch vehicles, should be mass-efficient. Adhesively bonded joints can provide increased mass-efficiency over mechanically-fastened joints. But, due to manufacturing sensitivities and certification requirements, conventional bonded joints can be …
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Dynamic Inversion and Backstepping Controller Robustness Analysis for a Reusable Launch Vehicle
… responsive space (ORS), which is the ability to launch military assets into space without the long set up time currently required. Part of the solution to ORS is to develop a reusable booster vehicle capable of sending any vehicle into orbit, then descending back to the atmosphere and landing …
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Investigating Variation in Launch Vehicle Atmospheric Impact by Launch Latitude and Season
Launch vehicles are a significant anthropogenic atmospheric emissions vector, and in the past have been shown to cause up to 50% as much global heating as aviation CO2. Despite this high magnitude of emissions impact, few studies quantify the variation in launch vehicle emissions beyond exploring …
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Model predictive control for ascent load management of a reusable launch vehicle
… of ascent, winds have a significant impact on a launch vehicle's angle of attack, and can induce large structural loads on the vehicle. Traditional methods for mitigating these loads involve measuring the winds prior to launch and designing trajectories to minimize the vehicle angle of attack …
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An asymptotic approach in the preliminary design of a launch vehicle control system
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1989.
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Analysis of a heavy lift launch vehicle design using small liquid rocket engines
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1988.
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Designing sustainable heavy lift launch vehicle architectures adaptability, lock-in, and system evolution
… on the development of a sustainable heavy lift launch vehicle (HLLV). But what exactly is sustainability in the context of launch systems and how can it addressed in the design process? A HLLV must balance myriad technical and programmatic factors such as performance, reliability, cost, …
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Effective CFD Integration into Product Development and Validation of Wind Tunnel Data for Transonic Launch Vehicle
… the steady-state pressure coefficient of a launch vehicle under transonic conditions. The results from the computational fluid dynamics simulations are then compared to experimental data from NASA Technical Memorandum X-778. The results indicate a process to implement computational fluid …
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Effects of multirate compensation on a digital autopilot for thrust vector control of a launch vehicle
Thesis. 1976. M.S.--Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics.
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Benchmark characterization for reusable launch vehicle onboard trajectory generation using a Legendre psuedospectral [sic] optimization method
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2002.
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An application of robust H₂/H[infinity] control synthesis to launch vehicle ascent by Tyler Nicklaus Hague.
… of H2/H [infinity] control synthesis methods to launch vehicle ascent, specifically the pitch-plane control of the Kistler Aerospace launch vehicle, K1. A classical single-input, single-output design is also presented in order to assess the true applicability of a modern control synthesis …
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Model predictive control for terminal area energy management and approach and landing for a reusable launch vehicle
The space industry plans to develop new reusable launch vehicles. The new vehicles will need advanced, new guidance and control systems. Since 1996 Draper Laboratory has been developing the next generation guidance and control for reusable launch vehicles in which guidance and control is integrated …
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Design of a robust integrated guidance and control algorithm for the landing of an autonomous reusable launch vehicle
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1998.
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