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 12 of 12 for “"Gust Response"”.
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A study of gust response for a rotor-propeller in cruising flight.
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1974.
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Gust response and its alleviation for a hingeless helicopter rotor in cruising flight.
Thesis. 1977. Ph.D.--Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics.
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Design of an Experimental Rig to Characterize the Gust Response of Small Wind Turbines and Autorotating Seeds
… increase in oncoming flow velocity, i.e. a gust. These rotors consisted of blades with aspect ratios characteristic of samara seeds, which are known for their ability to maintain autorotation in unsteady wind. The models were tested in a towing tank using a custom-built experimental rig. The …
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MICRO AIR VEHICLE SCALE GUST-WING INTERACTION IN A WIND TUNNEL
Studying isolated gust effects on simple airfoil models in a controlled environment is a necessity to further the development of MAV gust response and control laws. This work describes the creation of a vertical gust generator in a low speed, low turbulence wind tunnel through the use of an …
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Separated Flows Over Non-slender Delta Wings
… the dynamic-stall process during a streamwise gust. Separated flow near the wing apex is shown to reattach during the gust, resulting in lift enhancement. Strong favourable pressure gradients drive the flow to promote reattachment, even after the gust has terminated. Combining the steady-state …
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Local Continuum Sensitivity Method for Shape Design Derivatives Using Spatial Gradient Reconstruction
… nonlinerity during a transient aeroelastic gust response is critical for sizing the aircraft configuration early in the design process. The primary motivation of this research is to develop a continuum shape sensitivity method that can support gradient-based design optimization of practical …
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Utility of Quasi-Static Gust Loads Certification Methods for Novel Configurations
Aeroelastic gust and maneuver loads have driven the sizing of primary aircraft structures since the beginning of aviation. Methodologies for determining the gust loads on aircraft have evolved over the last 100 years. There are three general approaches to gust loads analysis: quasi-static, …
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Improved gust rejection for a micro coaxial helicopter in urban environments
… design a micro coaxial helicopter with improved gust response in complex urban environments. Both experimental flight tests and modeling and simulation tools are developed and executed to analytically understand the challenges and potential solutions to enable rotorcraft to operate efficiently …
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Mitigation of Gust Loads Through Pitching
Wind gusts can cause large loads on aerial vehicles, affecting their controllability and hindering their performance. The negative impact is especially significant for small vehicles, which experience relatively stronger gusts due to their low speeds. This raises the necessity of a control approach …
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Aeroelastic behaviour of composite wings
… is carried out into the flutter suppression and gust alleviation of a laminated composite wing by the use of active controls. The results show that by using an active control in an optimum trailing edge position the gust response of a wing can be significantly alleviated without compromising the …
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Stereovision Correction Using Modal Analysis
… random atmospheric turbulence in the form of gusts that will excite the dominate frequencies of the aircraft. A method of stereo image rectification has been developed for cases where cameras that will be allowed to deflect on the wings of an fixed wing aircraft that is subjected to random …
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Conceptual Design for a Laminar-Flying-Wing Aircraft
… is low, and the structural efficiency and gust response are thus likely to be relatively poor. On the basis of this specification, a detailed conceptual design is undertaken. A 220-passenger laminar-flying-wing concept, propelled by three turboprop engines, with a cruise range of 9000 km is …