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 16 of 16 for “"F-15"”.
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Implementation of Constrained Control Allocation Techniques Using an Aerodynamic Model of an F-15 Aircraft
… and an aerodynamic model of a highly modified F-15 aircraft is used to demonstrate the various aspects of Constrained Control Allocation. This work was conducted under NASA research grant NAG-1-1449 supervised by John Foster of the NASA Langley Research Center
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Development of Mechanistic Flexible Pavement Design Concepts for the Heavyweight F-15 Aircraft (Airfield, Computer Design, Cbr, Algorithms)
A new configuration of the F-15 aircraft has been developed and is in use by the U.S. Air Force. This heavyweight F-15 has a 30-kip/355-psi wheel loading. A heavier-weight F-15 with 36-kip/395-psi wheel loading has been proposed for use. The F-15 will become the controlling aircraft for design of …
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A Comparison of Control Allocation Methods for the F-15 ACTIVE Research Aircraft Utilizing Real-Time Piloted Simulations
… allocation methods is performed utilizing the F-15 ACTIVE research vehicle. The control allocator currently implemented on the aircraft is replaced in the simulation with a control allocator that accounts for both control effector positions and rates. Validation of the performance of this Moment …
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Demonstration of Wallace Astrophysical Observatory's 24-inch telescope upgrade
… The telescope optics were configured to an f/15 Cassegrain with a resolution of 1 arcsecond, and a large-format commercial CCD detector was installed. The optical configuration gave a pixel scale of 0.55 arcseconds/pixel, covering a field of 0.220 across the diagonal of the detector. As a …
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Structural Identification and Buffet Alleviation of Twin-Tailed Fighter Aircraft
… structural dynamics of the twin tails of the F-15 fighter plane. The objective is to first investigate and identify the different possible attractors that coexist for the same operating parameters. Second is to develop a model that simulates the experimentally determined dynamics. Third is to …
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Development of a testing approach for tack coat application rate at pavement layer interfaces
… four temperatures: 5°F, 41°F, 77°F, and 113°F (–15°C, 5°C, 25°C, and 45°C). The study found that the optimum tack coat residual rate was 0.04 gal/yd2 (0.18 L/m2) for trafficked and non-trafficked unmilled aged HMA surface, while the optimum residual rate for milled HMA was 0.06 gal/yd2 (0.26 …
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A Decision Support Model for Large Systems Using Quality Function Deployment and Goal Programming: A Capital Budgeting Problem
… fighter aircraft (F-16 Fighting Falcon, F-15 Eagle, F-117 Nighthawk and A-10 Thunderbolt II).</p>
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A Study of Non-Fluid Damped Skin Friction Measurements for Transonic Flight Applications
… flight test plate mounted underneath a NASA F-15 aircraft flying at altitudes ranging from 15,000 to 45,000 ft. at Mach numbers ranging from 0.70 to 0.99. These conditions lead to predicted shear levels ranging from 0.3 to 1.5 psf. The gage consisted of a floating element cantilevered beam …
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Coberturas muertas de follajes de árboles de sombra, para el control de malezas en café (Coffea arabica L.)
… que la cobertura de rápida descomposición (F = 15**, 17* * y 67* *). Coberturas dobles lograron disminuir el número de individuos pero no en todas las fechas. En conclusión, los árboles de sombra según la especie tienen un posible papel en el manejo de malezas en café.
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The nature and co-behaviour of volatile and non-volatile elements in the sub-continental lithospheric mantle
… P (40 ppm) add higher than for the halogen (F = 15 to 27 ppm; Cl = 3.4 to 5.4 ppm), B (0.09 to 0.22 ppm) and Li (1.77 ppm). In comparison with the depleted mantle, the off-craton mantle is more concentrated in Li, B and F has similar CO2, P and Cl and lower amounts of H2O. Finally, this study …
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The effects of velocity specific isokinetic training on strength, hypertrophy, and cross education
… arm (AG) in the trained. Thirty volunteers (M=15, F=15) were randomly assigned to an experimental, slow velocity group (S), 60 degrees-per-second (n=9; 25.4±..6.5yr), a fast velocity group (F), 450 degrees-per-second (n=ll, 23.7 ±..S.4yr), or control group (C) (n=10, 26 ± 3.2yr). One limb was …
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Study of Rubber Damped Skin Friction Gages for Transonic Flight Testing
… gage performance at altitudes ranging from 15,000 to 45,000 feet, Mach numbers ranging from 0.6 to 0.99 resulting in shear values of 0.3 to 1.5 psf. under vibration conditions up to 8.0 grms over a 15 - 2,000 Hz frequency range. The gage consisted of a rubber RTV sheet-coated floating …
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Dynamics and precursor signs for phase transitions in neural systems
… growth of spectral power at low frequencies (f < 15 Hz) was observed in LFP recordings prior to initiation of some SLEs. In addition we demonstrated prolongation of electrically evoked potentials in cortical tissue, while forwarding the slice to a seizing regime. The results offer the possibility …
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A Correlational Model of Burnout and Personality Among Clergy in the United States
… statistically significant, Wilks’s λ = 0.317, F(15, 1640.17) = 56.477, p < .001, Rc = .759, Rc2 = .577, with moderate effect size.</p> <p>Conclusions</p> <p>According to Morgan and de Bruin (2010), there are strong links between personality and burnout, and the results of the present study …
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IgE-reactivity and proinflammatory cytokine -inducibility of various recombinant house dust mite allergens including novel rDer f 4
… of rDer f 10 (24.7%), rDer f 13 (3.6%), rDer f 15 (4.1%), rDer f 18 (32.0%) and rDer f 20 (38.7%) displayed low IgE reactivity. IgE reactivities against Der f 2 were shown in all patients with asthma, rhinitis or atopic dermatitis. Each serum recognized with 2 to 12 D. farinae proteins, and 190 …
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INFEZIONI CONGENITE: ESPERIENZA TRIENNALE DI UN SINGOLO CENTRO
… Marco dal 2017 al 2020 [M 16 (52%), F 15 (48%)]. Tutti i pazienti sono stati selezionati tramite lo screening prenatale. In entrambi i gruppi i parametri analizzati sono stati: anamnesi gestazionale, anamnesi neonatale e follow up a breve e a lungo termine. Risultati: per quel che …