Estimation Of Potential Aircraft Fuel Burn Reduction In Cruise Via Speed And Altitude Optimization Strategies
DOWNLOAD
Download Estimation Of Potential Aircraft Fuel Burn Reduction In Cruise Via Speed And Altitude Optimization Strategies PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Estimation Of Potential Aircraft Fuel Burn Reduction In Cruise Via Speed And Altitude Optimization Strategies book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Estimation Of Potential Aircraft Fuel Burn Reduction In Cruise Via Speed And Altitude Optimization Strategies
DOWNLOAD
Author : Jonathan Anders Lovegren
language : en
Publisher:
Release Date : 2011
Estimation Of Potential Aircraft Fuel Burn Reduction In Cruise Via Speed And Altitude Optimization Strategies written by Jonathan Anders Lovegren and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
Environmental performance has become a dominant theme in all transportation sectors. As scientific evidence for global climate change mounts, social and political pressure to reduce fuel burn and C0 2 emissions has increased accordingly, especially in the rapidly growing aviation industry. Operational improvements offer the ability to increase the performance of any aircraft immediately, by simply changing how the aircraft is flown. Cruise phase represents the largest portion of flight, and correspondingly the largest opportunity for fuel burn reduction. This research focuses on the potential efficiency benefits that can be achieved by improving the cruise speed and altitude profiles operated by flights today. Speed and altitude are closely linked with aircraft performance, so optimizing these profiles offers significant fuel burn savings. Unlike lateral route optimization, which simply attempts to minimize the distance flown, speed and altitude changes promise to increase the efficiency of aircraft throughout the entire flight. Flight data was collected for 257 flights during one day of domestic US operations. A process was developed to calculate the cruise fuel burn of each selected flight, based on aircraft performance data obtained from Piano-X and atmospheric data from. NOAA. Improved speed and altitude profiles were then generated for each flight, representing various levels of optimization. Optimal cruise climbs and step climbs of 1,000 and 2,000 ft were analyzed, along with optimal and LRC speed profiles. Results showed that a maximum fuel burn reduction of 3.5% is possible in cruise given complete altitude and speed optimization; this represents 2.6% fuel reduction system-wide, corresponding to 300 billion gallons of jet fuel and 3.2 million tons of CO2 saved annually. Flights showed a larger potential to improve speed performance, with nearly 2.4% savings possible from speed optimization compared to 1.5% for altitude optimization. Few barriers exist to some of the strategies such as step climbs and lower speeds, making them attractive in the near term. As barriers are minimized, speed and altitude trajectory enhancements promise to improve the environmental performance of the aviation industry with relative ease.
Full Efficiency Benefits And Implementation Considerations For Cruise Altitude And Speed Optimization In The National Airspace System
DOWNLOAD
Author : Luke L. Jensen
language : en
Publisher:
Release Date : 2014
Full Efficiency Benefits And Implementation Considerations For Cruise Altitude And Speed Optimization In The National Airspace System written by Luke L. Jensen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
This study examines the potential fuel burn benefits of altitude and speed optimization in the cruise phase of flight for domestic airlines in the United States. Airlines can achieve cost reductions and reduce environmental impact by making small modifications to the cruise phase operating condition. With strong coordination between air traffic controllers, pilots, and airline dispatchers, the efficiency of the National Airspace System can be improved. This study builds off of prior work in this area to establish best-case benefits assuming full implementation of fuel-optimal cruise altitudes and speeds. In order to achieve these objectives, a cruise-phase fuel burn estimator is developed using publicly-available radar tracks and weather data. This estimator is used to examine over 200,000 flights from 2012 for optimization potential. Maximum benefits from altitude optimization (holding speed constant) are found to be on the order 1.96% cruise fuel reduction. The incremental benefit of highfidelity trajectory optimization relative to well-designed step climb profiles indicates that the majority of potential altitude benefits can be achieved through efficient application of today's airspace structure and procedures. The maximum benefits for speed optimization (holding altitude constant) are found to be 1.94% with an average flight time increase of 3.5 minutes per flight. Simultaneous altitude and speed optimization yield a potential cruise fuel burn reduction of 3.71%. In practice, operational considerations and barriers to implementation limit likely system fuel reduction to lower levels. High-benefit operations within the NAS are identified and potential implementation considerations are discussed.
Fuel Burn Reduction Potential From Delayed Deceleration Approaches
DOWNLOAD
Author : Jean-Marie Dumont (S.M.)
language : en
Publisher:
Release Date : 2012
Fuel Burn Reduction Potential From Delayed Deceleration Approaches written by Jean-Marie Dumont (S.M.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
Changing aircraft operational procedures is one strategy that can be used to reduce fuel burn and mitigate environmental impacts of aviation in relatively short timeframes with existing aircraft types. One promising modification comes from increasing the use of Delayed Deceleration Approaches where the deceleration to the standard stabilized final approach speed occurs later, which keeps the aircraft in clean aerodynamic configuration with low thrust for as long as possible. Although such approaches can reduce fuel burn, in practice aircraft often decelerate much earlier. This may be for a variety of reasons, such as airspace restrictions, slower traffic ahead, air traffic controller technique and airline procedures and/or pilot technique. In this study, operational flight data has first been used to quantify the potential fuel burn savings associated with Delayed Deceleration Approaches. Aircraft that were observed to decelerate and configure flaps later in the approach had 30-40% lower fuel burn and carbon dioxide emissions below 10,000 ft compared to those that did not. Estimates of US system-wide fuel burn and emissions reduction potential from Delayed Deceleration Approaches have also been produced. Second, radar tracks of flights to different airport areas have been analyzed to help identify reasons for early decelerations. By observing the context of evolution of the less fuel efficient flights, the role of different potential factors such as preceding traffic, traffic mix, highly constrained airspace, runway interactions and severe weather conditions affecting the airspeed schedule of a given flight have been examined. Weather appeared to be a major parameter affecting the airspeed schedule, and air traffic procedures involving early decelerations appeared to have been used in dense and complex airspaces.
Proceedings Of The Future Technologies Conference Ftc 2019
DOWNLOAD
Author : Kohei Arai
language : en
Publisher: Springer Nature
Release Date : 2019-10-09
Proceedings Of The Future Technologies Conference Ftc 2019 written by Kohei Arai and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-10-09 with Technology & Engineering categories.
This book presents state-of-the-art intelligent methods and techniques for solving real-world problemsand offers a vision of future research. Featuring 143 papers from the 4th Future Technologies Conference, held in San Francisco, USA, in 2019, it covers a wide range of important topics, including, but not limited to, computing, electronics, artificial intelligence, robotics, security and communications and their applications to the real world. As such, it is an interesting, exciting and inspiring read.
Operations Research Proceedings 2014
DOWNLOAD
Author : Marco Lübbecke
language : en
Publisher: Springer
Release Date : 2016-02-20
Operations Research Proceedings 2014 written by Marco Lübbecke and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-02-20 with Business & Economics categories.
This book contains a selection of refereed papers presented at the "International Conference on Operations Research (OR 2014)", which took place at RWTH Aachen University, Germany, September 2-5, 2014. More than 800 scientists and students from 47 countries attended OR 2014 and presented more than 500 papers in parallel topical streams, as well as special award sessions. The theme of the conference and its proceedings is "Business Analytics and Optimization".
Aircraft Cruise Phase Altitude Optimization Considering Contrail Avoidance
DOWNLOAD
Author : Hang Gao (S.M.)
language : en
Publisher:
Release Date : 2013
Aircraft Cruise Phase Altitude Optimization Considering Contrail Avoidance written by Hang Gao (S.M.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
Contrails have been suggested as one of the main contributors to aviation-induced climate impact in recent years. To reduce the climate impact of contrails, mitigation policies such as taxation will be necessary in the future to incentivize jet aircraft operators to reduce contrail production. Contrails form in regions of the atmosphere with the right ambient conditions and they can be avoided by flying around these regions; this research investigates one such contrail avoidance strategy that uses flight level optimization to minimize contrail formation. A cruise phase flight profile system model was developed in this research that optimizes for environmental objectives such as contrails, CO2, and NOx, alongside traditional objectives such as fuelburn and flight time. Using this system model and 11 different aircraft types on 12 weather days, a preliminary study was done to determine the price range of contrail taxation that would incentivize airlines to operationally avoid contrails. Result suggests a price range of 0.12$/NM to 1.13$/NM on contrail tax would effectively incentivize contrail avoidance. Furthermore, since operating costs differ depending on the type of aircraft, a single price on contrail tax may incentivize contrail avoidance on a small aircraft, but not larger ones. To account for this difference, a method of assigning contrail tax to different aircraft types is introduced using the aircraft maximum takeoff weight. Assuming airlines are incentivized to fly contrail avoidance strategies, the climate impact of the flight profiles was evaluated for 287 flights along 12 O-D pairs for the 24 hour day of April 12, 2010. Under various assumptions of contrail radiative forcing and time horizon of climate impact evaluation, the flight level optimization reduced the average climate impact per flight by as much as 39.1% from a baseline of wind-optimal flight at optimal cruise altitude. In comparison, a complementary lateral optimization method reduced 13.3% from the same baseline. Furthermore, flight level optimization shows to be more fuel efficient by reducing the climate impact of contrails by as much as 94% from the baseline, compared to 60% using the lateral approach. In terms of the CO2 emission from the additional fuelburn, the climate impact of lateral method was 4 times higher than the flight level approach. Lastly, result shows that designing for long-term environmental objectives is more energy efficient (reduction in climate impact per additional kilogram of fuel used) than short-term, which suggest reducing CO2 emission is favored over contrail avoidance in designing for climate impact optimal flight profiles.
Aviation Systems
DOWNLOAD
Author : Andreas Wittmer
language : en
Publisher: Springer Nature
Release Date : 2021-10-13
Aviation Systems written by Andreas Wittmer and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-10-13 with Business & Economics categories.
This book provides an overview of the aviation sector by focusing on all major aspects embedded in the environment (subsystems) and the market of aviation. The book explains the linkages between subsystems politics, society, technology, economy, environment, and regulation, and how these subsystems influence each other and the market. The book starts by describing the aviation system, then focuses on the supply side and the demand side of the system and in a final part focuses on steering and controlling the system of aviation from a managerial, economic, and regulatory perspective. Examples and case studies of airports, airlines, and the production industry in each chapter support the application-oriented approach. The summary and review questions help the reader to understand the focus and main messages of each chapter. Students and researchers in business administration with a focus on aviation, as well as professionals in the industry looking to refresh or broaden their knowledge in the field will benefit from this book.
Approaches To Representing Aircraft Fuel Efficiency Performance For The Purpose Of A Commercial Aircraft Certification Standard
DOWNLOAD
Author : Brian Matthew Yutko
language : en
Publisher:
Release Date : 2011
Approaches To Representing Aircraft Fuel Efficiency Performance For The Purpose Of A Commercial Aircraft Certification Standard written by Brian Matthew Yutko and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
Increasing concern over the potential harmful effects of green house gas emissions from various sources has motivated the consideration of an aircraft certification standard as one way to reduce aircraft C02 emissions and mitigate aviation impacts on the climate. In order to develop a commercial aircraft certification standard, a fuel efficiency performance metric and the condition at which it is evaluated must be determined. The fuel efficiency metric form of interest to this research is fuel/range, where fuel and range can either be evaluated over the course of a reference mission or at a single, instantaneous point. A mission-based metric encompasses all phases of flight and is robust to changes in technology; however, definition of the reference mission requires many assumptions and is cumbersome for both manufacturers and regulators. An instantaneous metric based on fundamental aircraft parameters measures the fuel efficiency performance of the aircraft at a single point, greatly reducing the complexity of the standard and certification process; however, a single point might not be robust to future changes in aircraft technology. In this thesis, typical aircraft operations are assessed in order to develop evaluation assumptions for a mission-based metric, Block Fuel divided by Range (BF/R), and an instantaneous metric, incremental fuel burn per incremental distance (inverse Specific Air Range (1/SAR)). Operating patterns and fuel burn maps are used to demonstrate the importance of mission range on fleet fuel burn, and thus the importance of a properly defined range evaluation condition for BF/R. An evaluation condition of 40% of the range at Maximum Structural Payload (MSP) limited by Maximum Takeoff Weight (MTOW) is determined to be representative for the mission-based metric. A potential evaluation condition for 1/SAR is determined to be optimal speed and altitude for a representative mid-cruise weight defined by half of the difference between MTOW and Maximum Zero Fuel Weight (MZFW). To demonstrate suitability as a potential surrogate for BF/R, correlation of 1/SAR with BF/R is shown for the current fleet, and a case study of potential future aircraft technologies is presented to show the correlation of improvements in the 1/SAR metric with improvements in BF/R.
Preliminary Development And Flight Trials Of A Cruise Altitude And Speed Optimization Decision Support Tool
DOWNLOAD
Author : Clement Li
language : en
Publisher:
Release Date : 2018
Preliminary Development And Flight Trials Of A Cruise Altitude And Speed Optimization Decision Support Tool written by Clement Li and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
A cruise altitude and speed optimization decision support tool, based on the concept of a minimum cost altitude tunnel, was developed to aid flight crew and dispatcher situational awareness and decision-making in vertical trajectory planning in order to reduce fuel and time costs. As the optimal altitude for an aircraft changes with speed, weight, outside air temperature, and winds, flight crew decision-making can benefit from the calculation and display of the relative flight costs of possible trajectories. The concept of a minimum cost tunnel is introduced, and the decision support tool is presented. Four preliminary flight trials were conducted with a Boeing 777-200 and prototype decision support tool. The preliminary flight trials suggest that the decision support tool is useful and improves situational awareness and coordination between dispatcher and flight crew. The initial flight trials also indicated that flight crews would benefit from higher quality turbulence information, including synchronization of the turbulence information available to flight crews and dispatchers. The largest fuel savings observed for a flight from the preliminary flight trials was over 3800 lbs. Additionally, the flight trials suggest that the minimum cost tunnel would even be useful as a static image included as part of the flight plan to provide situational awareness and facilitate coordination with dispatchers.
Fuel Economy In Aviation
DOWNLOAD
Author : Jeffrey L. Ethell
language : en
Publisher:
Release Date : 1983
Fuel Economy In Aviation written by Jeffrey L. Ethell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Aeronautics categories.