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 13 of 13 for “"Aerobatic"”.
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Autonomous aerobatic maneuvering of miniature helicopters
… methodology for the autonomous execution of aerobatic maneuvers with small-scale helicopters, and a low-order dynamic model which adequately describes a miniature helicopter in a wide range of flight conditions, including aerobatics. The control laws consist of steady-state trim trajectory …
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Nonlinear control of an aerobatic RC airplane
… on the ideas of backstepping is applied to an aerobatic RC airplane. The controller asymptotically tracks a time-parameterized position reference, and depends on an orientation look-up rule to determine the vehicle orientation from a desired acceleration. A coordinated-flight look-up rule …
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Measurement of head acceleration and angular rate experienced by aerobatic pilots
Background: Aerobatic pilots are exposed to high levels of positive and negative G’s which can be associated with career-limiting neurovestibular effects including “the wobblies.” Extensive research has been conducted on the effects of positive G’s in centrifuge experiments. Gz tolerances have been …
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Modeling and validation of a subscale aerobatic aircraft configuration in spin
An approach for modeling the stall/spin regime of single engine aircraft is presented. A three-pronged approach is taken that involves the following components: flight testing, the development of a new analytical model for calculating the forces on a stalled spinning wing, and validation of that …
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Measurement of unsteady aerodynamic characteristics of a subscale aerobatic aircraft in high angle-of-attack maneuvers
High angle-of-attack flight testing was performed using the UIUC Subscale Sukhoi, which is a 35% scale, 2.6 m (102 in) wingspan Sukhoi 29S electric model aircraft that was developed at the University of Illinois at Urbana-Champaign. The aircraft was instrumented with a custom sensor data …
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Syntax-based guidance for autonomous aggressive aerobatics in urban environments
… a new guidance paradigm for an autonomous aerobatic helicopter. In addition, it presents the design of a hammerhead aerobatic maneuver on the same helicopter, and validates both designs in flight. The proposed guidance architecture integrates a new path-following algorithm with a …
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Flight Regime and Maneuver Recognition for Complex Maneuvers
… for maneuver recognition, for example in aerobatics.</p> <p>This study uses a flight simulator to generate representative flight data that is parsed by a specifically developed algorithm into appropriate flight regimes. This algorithm is a filter technique that uses states based on the …
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Experimental wind tunnel study of airfoils with large flap deflections at low Reynolds numbers
… similar performance characteristics that favor aerobatic flight. Airfoil performance was predicted computationally using XFOIL during the inverse design of the W1011 and W1015 airfoils. In order to effectively analyze and compare the experimental results, lift and moment increment plots were …
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Development and Deployment of a Dynamic Soaring Capable UAV using Reinforcement Learning
… which is based upon an off-the-shelf unmanned aerobatic glider. A combination of high-fidelity Reynolds-Averaged Navier-Stokes (RANS) computational fluid dynamics (CFD) in ANSYS Fluent and low-fidelity vortex lattice (VLM) method in Surfaces was employed to build a complete aerodynamic model of …
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Measurement of aerodynamic characteristics of MAVs using motion tracking
… The aircraft used were flat foam surface, highly aerobatic RC models. Tests were conducted for unpowered and powered flight conditions to assess the aerodynamic performance of a commercially manufactured Extra 300 3D and a custom-built Extra 260 with wingspans of 42.67 cm (16.8 in) and 41.27 cm …
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Perching with fixed wings
… to matching this agility for a certain class of aerobatic maneuvers where the rotor or propeller forces dominate the dynamics of the aircraft [3, 4, 5]. However, as our flying machines scale down to smaller sizes (e.g. Micro Aerial Vehicles) operating at low Reynold's numbers, viscous forces …
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Supermaneuverable perching
… 'swim' through the air while executing aerobatic maneuvers that routinely defy modern aeronautical and control engineering, consistently reminding us that the skies are truly their playground. These animals are masters at inducing and exploiting post-stall aerodynamics to quickly execute …
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Artistry in Air: The Story of the Younkins
… industry. His son, Bobby became one of the top aerobatic pilots in the world and Jim’s grandchildren, Matt and Amanda, also became critically acclaimed performers in the air show business. Like his father, Matt is ranked among the best of pilots in the industry. Jim also received national …