Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Aircraft Trajectory Optimization For Low Fuel Consumption And Low Perceived Noise With Data Driven Flight Simulation
Download Aircraft Trajectory Optimization For Low Fuel Consumption And Low Perceived Noise With Data Driven Flight Simulation full books in PDF, epub, and Kindle. Read online Aircraft Trajectory Optimization For Low Fuel Consumption And Low Perceived Noise With Data Driven Flight Simulation ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Aircraft Trajectory Optimization for Low Fuel Consumption and Low Perceived Noise with Data-driven Flight Simulation by : Dajung Kim
Download or read book Aircraft Trajectory Optimization for Low Fuel Consumption and Low Perceived Noise with Data-driven Flight Simulation written by Dajung Kim and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flight and Simulation Investigation of Methods for Implementing Noise-abatement Landing Approaches by :
Download or read book Flight and Simulation Investigation of Methods for Implementing Noise-abatement Landing Approaches written by and published by . This book was released on 1970 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Approximate Solutions to Optimum Flight Trajectories for a Turbojet-powered Aircraft by : Angelo Miele
Download or read book Approximate Solutions to Optimum Flight Trajectories for a Turbojet-powered Aircraft written by Angelo Miele and published by . This book was released on 1959 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781720459552 Total Pages :72 pages Book Rating :4.4/5 (595 download)
Book Synopsis Design and Testing of a Low Noise Flight Guidance Concept by : National Aeronautics and Space Administration (NASA)
Download or read book Design and Testing of a Low Noise Flight Guidance Concept written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-05-29 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: A flight guidance concept was developed to assist in flying continuous descent approach (CDA) procedures designed to lower the noise under the flight path of jet transport aircraft during arrival operations at an airport. The guidance consists of a trajectory prediction algorithm that was tuned to produce a high-efficiency, low noise flight profile with accompanying autopilot and flight display elements needed by the flight control system and pilot to fly the approach. A key component of the flight guidance was a real-time display of energy error relative to the predicted flight path. The guidance was integrated with the conventional Flight Management System (FMS) guidance of a modern jet transport airplane and tested in a high fidelity flight simulation. A charted arrival procedure, which allowed flying conventional arrivals, CDA arrivals with standard guidance, and CDA arrivals with the new low noise guidance, was developed to assist in the testing and evaluation of the low noise guidance concept. Results of the simulation testing showed the low noise guidance was easy to use by airline pilot test subjects and effective in achieving the desired noise reduction. Noise under the flight path was reduced by at least 2 decibels in Sound Exposure Level (SEL) at distances from about 3 nautical miles out to about 17.5 nautical miles from the runway, with a peak reduction of 8.5 decibels at about 10.5 nautical miles. Fuel consumption was also reduced by about 17% for the LNG conditions compared to baseline runs for the same flight distance. Pilot acceptance and understanding of the guidance was quite high with favorable comments and ratings received from all test subjects.Williams, David H. and Oseguera-Lohr, Rosa M. and Lewis, Elliot T.Langley Research CenterFLIGHT CONTROL; FLIGHT TESTS; JET AIRCRAFT; LOW NOISE; AIRCRAFT GUIDANCE; DESCENT; FLIGHT MANAGEMENT SYSTEMS; FLIGHT PATHS; RUNWAYS; SIMULATION; AUTOMATIC PILOTS; TRAJECTORIES; DISPLAY DEVICES; NOISE REDUCTION
Book Synopsis Efficient and Robust Aircraft Landing Trajectory Optimization by : Yiming Zhao
Download or read book Efficient and Robust Aircraft Landing Trajectory Optimization written by Yiming Zhao and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis addresses the challenges in the efficient and robust generation and optimization of three-dimensional landing trajectories for fixed-wing aircraft subject to prescribed boundary conditions and constraints on maneuverability and collision avoidance. In particular, this thesis focuses on the airliner emergency landing scenario and the minimization of landing time. The main contribution of the thesis is two-fold. First, it provides a hierarchical scheme for integrating the complementary strength of a variety of methods in path planning and trajectory optimization for the improvement in efficiency and robustness of the overall landing trajectory optimization algorithm. The second contribution is the development of new techniques and results in mesh refinement for numerical optimal control, optimal path tracking, and smooth path generation, which are all integrated in a hierarchical scheme and applied to the landing trajectory optimization problem. A density function based grid generation method is developed for the mesh refinement process during numerical optimal control. A numerical algorithm is developed based on this technique for solving general optimal control problems, and is used for optimizing aircraft landing trajectories. A path smoothing technique is proposed for recovering feasibility of the path and improving the tracking performance by modifying the path geometry. The optimal aircraft path tracking problem is studied and analytical results are presented for both the minimum-time, and minimum-energy tracking with fixed time of arrival. The path smoothing and optimal path tracking methods work together with the geometric path planner to provide a set of feasible initial guess to the numerical optimal control algorithm. The trajectory optimization algorithm in this thesis was tested by simulation experiments using flight data from two previous airliner accidents under emergency landing scenarios. The real-time application of the landing trajectory optimization algorithm as part of the aircraft on-board automation avionics system has the potential to provide effective guidelines to the pilots for improving the fuel consumption during normal landing process, and help enhancing flight safety under emergency landing scenarios. The proposed algorithms can also help design optimal take-off and landing trajectories and procedures for airports.
Book Synopsis Pilot Performance During Simulated Approaches and Landings Made with Various Computer-generated Visual Glidepath Indicators by : Mark F. Lewis
Download or read book Pilot Performance During Simulated Approaches and Landings Made with Various Computer-generated Visual Glidepath Indicators written by Mark F. Lewis and published by . This book was released on 1979 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Flight Simulator Motion of Pilots' Performance of Tracking Tasks by : Joseph G. Douvillier
Download or read book Effects of Flight Simulator Motion of Pilots' Performance of Tracking Tasks written by Joseph G. Douvillier and published by . This book was released on 1960 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 2019 IEEE AIAA 38th Digital Avionics Systems Conference (DASC) by : IEEE Staff
Download or read book 2019 IEEE AIAA 38th Digital Avionics Systems Conference (DASC) written by IEEE Staff and published by . This book was released on 2019-09-08 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: To provide a forum for free discussions of new ideas, research, development and applications in order to stimulate and inspire pioneering work in the field of digital avionics and related areas To acquire high quality technical papers for publication in a DASC Proceedings and other appropriate publications such as the AIAA Journal of Aircraft and IEEE Systems Magazine To provide a meeting that will further the progress of AIAA and IEEE entities, including Societies, Technical Committees and local Sections and thereby better serve the interests of all AIAA and IEEE members and the community at large To provide an atmosphere that strengthens the interpersonal rapport of a large number of engineers and scientists interested in specialized and closely related fields To provide an exhibition of current hardware and software products, methods and tools To provide instruction in advances in digital avionics and to encourage and reward student academic participation
Book Synopsis Aircraft Trajectory Optimization According to Weather Conditions by : Adria Blanco Cabanillas
Download or read book Aircraft Trajectory Optimization According to Weather Conditions written by Adria Blanco Cabanillas and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In a currently congested and overbooked airspace, institutions and users of the aeronautical sector increasingly need a major organization and optimization of the air routes in order of reducing any kind of cost and mainly concerning about minimizing aircraft delays and flight time durations. It has been for this reason that this project makes some first steps into this topic with the design, programming and simulation of a sort of new tools in terms of improving airplane's trajectories in a specific and relevant field of the aerial navigation: the meteorology. First of all, an introductory and theoretical study about aviation weather has been done being directly related with any type of flight, even it has been mainly focused on commercial ones. This short summary, gives a future user of this tool the appropriate environment, allowing him to easily recognize the causes of the obtained results that are associated to specific meteorological phenomena. Secondly, the methodology used to design a Matlab program able to optimize aerial trajectories in function of atmospheric conditions has been explained. In this step, the procedure to obtain the meteorological data has also been detailed including its process and its respective worldwide cartographic representation to furthermore define the required algorithms to minimize the total flight length through wind currents and precipitation in every different scenario. Once the software's performance has been explained, several simulations have been run for real and theoretical cases in terms of visualizing the functionality of the program for different situations. Initially, as a real scenario, three possible commercial long, mid and short distance routes have been simulated between Barcelona and Tokyo, Moscow and Vienna. Additionally, some fictional simulations have been performed in terms of visualizing how the modification of their initial airspeeds and their path through different weather systems could influence the performance of the software. The project not only analyzes the appropriate performance of the program, but also explains what could suppose the implementation of a software like this in basic but realistic route planning.
Book Synopsis The Effects of Motion and G-seat Cues on Pilot Simulator Performance of Three Piloting Tasks by : Thomas W. Showalter
Download or read book The Effects of Motion and G-seat Cues on Pilot Simulator Performance of Three Piloting Tasks written by Thomas W. Showalter and published by . This book was released on 1980 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Real-time Trajectory Optimization and Air Traffic Control Simulation for Noise Abatement Approach Procedures by : Feng Zou
Download or read book Real-time Trajectory Optimization and Air Traffic Control Simulation for Noise Abatement Approach Procedures written by Feng Zou and published by . This book was released on 2004 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aircraft noise is a major obstacle to the growth of aviation. This thesis presents an adaptive onboard real-time optimization algorithm and an Air Traffic Control simulation model that can minimize the aircraft approach noise and meet air traffic control targets and restrictions. The adaptive real-time optimization algorithm uses dynamic programming, nonlinear optimization, and receding horizon control to generate approach procedures. The resulting noise abatement trajectories compensate for environmental uncertainties, provide more flexibility to air traffic controllers and pilots, and improve airport efficiency while lowering community noise. The Air Traffic Control simulation model simulates a fleet approach with noise abatement approaches. Three different status displays are tested and compared in the simulation, and the optimal displays for controller are explored in the thesis.
Book Synopsis Trajectory Generation Using a Modified Simple Shooting Method by : Ashley Trent
Download or read book Trajectory Generation Using a Modified Simple Shooting Method written by Ashley Trent and published by . This book was released on 2004 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently, several authors have studied the problem of trajectory redesign for hypersonic aircraft. The usual procedure for solving such problems is to set it up as a constrained optimal control problem. Lu and Schierman used direct methods to numerically solve the optimal control problems. Alternatively, one could use Pontryagin's Minimum Principle to obtain first-order necessary conditions for the optimal control problem and obtain a two-point boundary-value problem (TPBVP). Originally created to solve two-point boundary value problems (TPBVPs), the Modified Simple Shooting Method (MSSM) has been shown to be superior, both in speed and accuracy, to known methods for solving TPBVPs. Since optimal control problems can be formulated with differential equations and boundary conditions, it seems feasible to propose that the MSSM could be used to solve problems in optimal control. Here, the original MSSM algorithm was altered and used in conjunction with Pontryagin's Minimum Principle in an attempt to solve an optimal control problem in trajectory generation. In this paper, the authors consider the problem of trajectory redesign of the unpowered reentry phase for a hypersonic air vehicle. They consider outer loop equations governing the motion of the center of mass and consider the angle of attack to be the input variable. The lift and drag forces for the aircraft considered were obtained from a polynomial neural network approximation of experimental data. Effector deflections were chosen so that the aircraft Underwent trimmed flight. (6 figures, 7 refs.).
Book Synopsis A Comparison of Optimal and Noise-abatement Trajectories of a Tilt-rotor Aircraft by :
Download or read book A Comparison of Optimal and Noise-abatement Trajectories of a Tilt-rotor Aircraft written by and published by . This book was released on 1972 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dynamics and Trajectory Optimization of Morphing Aircraft in Perching Maneuvers by : Adam Michael Wickenheiser
Download or read book Dynamics and Trajectory Optimization of Morphing Aircraft in Perching Maneuvers written by Adam Michael Wickenheiser and published by . This book was released on 2008 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in materials, actuators, and control architectures have enabled new design paradigms for unmanned aerial vehicles based on biological inspiration. Indeed, there has been a recent drive to design aircraft features and behaviors based on those of birds, insects, and flying mammals. This dissertation focuses on one such bio-inspired maneuver, perching, which can be described as a low-thrust, aerodynamically controlled, planted landing. While planted landings are possible in helicopters and jump jets, it has yet to be achieved on a low-thrust, high-efficiency platform such as a long loiter reconnaissance aircraft. It is proposed that in-flight shape reconfiguration can enable this class of aircraft to execute this maneuver without sacrificing its cruise performance. This dissertation discusses the perching problem at various levels, from the aerodynamics of the wing to the complete trajectory of the maneuver. A lifting-line technique, a variant of Weissinger's classical method, is developed to analyze the aerodynamics of morphing wings in the attached flow regime. This tool is used both to study the effects of morphing on a wing's loading and to populate a database of aerodynamic coefficients for simulating the perching aircraft. Thusly, the aircraft is simulated in the longitudinal plane and compared to a similar fixed-configuration aircraft. Trim and stability analyses are performed on each aircraft in order to clarify the effects of morphing on the aircraft's longitudinal dynamics. Finally, viable perching trajectories, which bring the aircraft from a cruise configuration to a planted landing, are developed and optimized in terms of their spatial requirements. Three classes of aircraft are simulated in this optimization study: point-mass, fixedconfiguration (i.e. conventional), and morphing aircraft. Comparisons of these classes show that fixed-configuration aircraft are limited by their pitch maneuverability, whereas morphing can alleviate these limitations by increasing the available pitch authority. It is concluded that morphing increases pitch controllability during the maneuver while simultaneously decreasing the spatial requirements of the perching maneuver. (Abstract).
Book Synopsis Free-flight Trajectory Optimization by Mixed Integer Programming by : Aminanmu Maolaaisha
Download or read book Free-flight Trajectory Optimization by Mixed Integer Programming written by Aminanmu Maolaaisha and published by . This book was released on 2015 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: The growing commercial air travel, fuel price and air pollution require to find an optimal solution for flight routing problem. In this thesis, we develop a trajectory optimization algorithm for Free-Flight, which will produce wind optimal trajectory in horizontal direction. Flying wind optimal trajectory will bring fuel saving. We formulate the problem as a mixed integer program which concentrates on the time dependence and discrete aspects. We use commercial solvers, CPEX, SCIP, to solve the model. Concerning the nonlinearities of the constraints, we approximate it by using piecewise linear functions such as special ordered sets Type2, lambda method, and delta method.We also give a good mapping that can deal with the roundness of the earth so that the algorithm is more accurate and practical. At the end, we give practical result and simulation of the trajectory. From our model, the result shows that with weak wind we can save from 1.5% fuel to 3.5%, in strong wind we can save around 6% to 13% fuel. We hope in the future, we combine our horizontal optimal trajectory with vertical optimization profile, get an optimal trajectory in 4D (2D in horizontal, 1D in vertical and 1D in time), which will be optimal in both in horizontal and vertical direction, consumes as less fuel as possible.
Book Synopsis Prediction of Optimal Flight Profiles for Jet Aircraft Under Short Range and Low Fuel Conditions by : Frederick John West
Download or read book Prediction of Optimal Flight Profiles for Jet Aircraft Under Short Range and Low Fuel Conditions written by Frederick John West and published by . This book was released on 1968 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are many factors, such as aircraft configuration and weight, winds aloft, airspeeds flown, altitude, distance, etc., which affect fuel consumption in turbojet aircraft. For any given combination of these factors a flight path can be determined that will result in the least fuel consumed for a ground distance covered. Under divert conditions from aircraft carriers at sea to fields ashore the choice of the optimal flight path is critical. The many possible combinations of factors lead to the adoption of computer flight planning. Pilots can avail themselves of computer solutions during flight planning and briefing sessions, and after take-off can receive further information via UHF radio. Typical flight handbooks display fuel flow data, etc. in such a manner that the pilot must 'guesstimate' entry parameters such as average horizontal weight, or weight prior to descent. Several iterative procedures are developed that provide exact solutions to these important figures. (Author).
