Browsing AE Research Publications by Title
Now showing items 74-93 of 182
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Fast and robust computation of low-thrust orbit-raising trajectories
(American Institute of Aeronautics and Astronautics, Inc. Read More: https://arc.aiaa.org/doi/10.2514/1.G003319, 2018-09)This paper presents a new dynamic model of a thrusting spacecraft, and the model is used for computing low-thrust orbit-raising trajectories to the geosynchronous equatorial orbit. Low-thrust orbit raising is a challenging ... -
Flight loads analysis of CL-415 scoopers
(American Institute of Aeronautics and Astronautics, Inc., 2022-06-20)Flight data recorded between 2015 and 2019 on a fleet of four CL-415 aircraft has been analyzed for the purpose of developing flight loads spectra. A low-pass filter has been used to remove the effects of local and structural ... -
Flight loads and usage analysis of a fleet of BE-1900D commuter airliners
(American Institute of Aeronautics and Astronautics, Inc., 2018-01-08)Flight data from 11,299 flights, recorded on a fleet of six BE-1900D aircraft during typical operational usage by a single commuter airline has been used for this analysis. The goal has been to quantify the airframe usage ... -
Flight loads monitoring of USFS aerial supervision modules
(American Institute for Aeronautics and Astronautics, Inc., 2014-01-17)The USFS has collected flight data on Beechcraft King Airs which are being used as Aerial Supervision Modules. Data from seven aircraft is presented. The missions are separated into four flight phases: climb, cruise, ... -
Flight loads spectra of a fleet of heavy air tankers
(American Institute of Aeronautics and Astronautics Inc., 2019-06-10)In-flight recorded data from eight BAe-146s and eight RJ-85s flown in support of the United States Forest Service aerial firefighting operations have been analyzed. Flights have been divided into firefighting, ferry, and ... -
Flight loads spectra of two business jets
(American Institute for Aeronautics and Astronautics, Inc., 2014-01-17)Operational flight loads have been analyzed from two business jets, a Global 5000 and a Global Express XRS. It is shown that due to the differing nature of their missions, both airframes were subjected to nearly the same ... -
Frequency and time domain analysis of an aeroelastic wing multiple component structure
(Taylor & Francis Group, 2015-09-02)A multiple component structure consisting of two Euler-Bernoulli beams connected to a rigid mass is used to model the heave dynamics of a wing micro air vehicle. In the time domain, the attainment of a Cₒ-semigroup in the ... -
Generalization of the collision cone approach for motion safety in 3-D environments
(Springer, 2012-02)Avoidance of collision between moving objects in a 3-D environment is fundamental to the problem of planning safe trajectories in dynamic environments. This problem appears in several diverse fields including robotics, air ... -
A greedy random adaptive search procedure for multi-rendezvous mission planning
(Univelt, Inc., 2015-01)The paper proposes a new algorithm to optimize a sequence of rendezvous maneuvers by a spacecraft with multiple targets. The algorithm consists of two phases: the first phase generates feasible solutions of the problem ... -
Guidance for precision three-dimensional maneuvers through orifices using safe-passage cones
(American Institute of Aeronautics and Astronautics, 2016-06)This paper proposes a safe-passage cone-based guidance strategy developed in a relative velocity framework to enable a generic aerial robot execute a precision three-dimensional maneuver through a narrow orifice in a wall. ... -
High-fidelity response prediction and failure evaluation of tapered composite components under multiaxial loading
(American Institute of Aeronautics and Astronautics Inc, AIAA, 2021-01)This paper presents an accurate and efficient modeling approach for high-fidelity 3D stress prediction and failure initiation and propagation modeling of tapered composite flexbeams with multiple ply drops subjected to ... -
Higher-order estimations of load factor from derived gust velocity
(American Institute of Aeronautics and Astronautics, Inc., 2018-11-12)Pratt's formula, in which the aircraft is modeled as a single-degree-of-freedom system, is used extensively to extract derived gust velocities from measured normal acceleration. There is evidence that airframe mass ... -
A hybrid scheme for the numerical simulation of shock/discontinuity problems
(Taylor & Francis, 2011)To address accuracy issues for direct numerical simulation, a hybrid scheme based on the weighted compact scheme (WCS) and weighted essentially non-oscillatory (WENO) scheme is developed. The new hybrid method incorporates ... -
Identifying elastic wave polarization and bandgaps in periodic solid media
(Elsevier Ltd, 2023-08-15)We present a new computational method to accurately identify the elastic wave propagation modes and polarizations in periodic solid structures and metamaterials. The method uses the eigenvectors associated with each ... -
Impact of launch injection error on orbit-raising of all-electric satellites
(American Institute of Aeronautics and Astronautics Inc, 2020-01-05)The effect of launch injection errors on the deployment time and deployed mass of all-electric satellites is investigated in this paper. A stochastic formulation is presented to capture the effect of uncertainties in the ... -
In-plane shear response of a composite hexagonal honeycomb core under large deformation – A numerical and experimental study
(Elsevier, 2021-07-15)In the present work, experimental shear tests using a custom-built picture-frame shear fixture have been conducted to investigate the in-plane pure-shear response of an HRP-C fiberglass/phenolic hexagonal honeycomb core ... -
In-plane thermal characterization of fiberglass/phenolic honeycomb core through an experimental-numerical approach
(DEStech Publications Inc., 2018)In the present study, a series of in-plane quasi-static tensile and compressive tests are carried out on a commercial Fiberglass/Phenolic hexagonal cell honeycomb core at elevated temperatures to investigate the high ... -
Incorporation of physics-based machining models in real-time decision making via metamodels
(Elsevier Ltd., 2017)Physics-based machining models typically require significant computational resources and time which makes them impractical for quick process optimization calculations in an industrial shop-floor setting. In this paper, we ... -
Integration of airfoil stall and compressibility models into a propeller blade element model
(American Society of Civil Engineers, 2016-07)The blade element method is an indispensible engineering design tool. It executes rapidly on a personal computer and is capable of accurate propeller performance predictions. An extensive literature survey reveals that for ... -
Introductory comparison of agricultural and single-engine air tanker operational loads
(American Institute of Aeronautics and Astronautics, Inc., 2018-01-07)Flight loads of aircraft flown for agricultural applications have been compared with those flown as single-engine air tankers to assess the dependence of the load factors exerted on these airframes on the type of operation. ...