Jet Fuel: from Well to Wing
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The Potential of Turboprops to Reduce Fuel Consumption in the Chinese Aviation System
THE POTENTIAL OF TURBOPROPS TO REDUCE FUEL CONSUMPTION IN THE CHINESE AVIATION SYSTEM Megan S. Ryerson, Xin Ge Department of City and Regional Planning Department of Electrical and Systems Engineering University of Pennsylvania [email protected] ICRAT 2014 Agenda • Introduction • Data collection • Turboprops in the current CAS network • Spatial trends for short-haul aviation • Regional jet and turboprop trade space • Turboprops in the future CAS network 2 1. Introduction – Growth of the Chinese Aviation System Number of Airports • The Chinese aviation system is in a period 300 of rapid growth • China’s civil aviation system grew at a rate 250 244 of 17.6%/year, 1980 - 2009 • Number of airports grew from 77 to 166 and annual traffic volume increasing from 3.43 million to 230 million 200 • The Civil Aviation Administration of China 166 (CAAC) maintains a target of 244 airports 150 across the country by 2020 • The CAAC plans for 80% of urban and suburban areas to be within a 100km (62 100 77 miles) of aviation service by 2020 • Plans also include strengthening hub-and- 50 spoke networks across the country to meet the dual goals of improving the competitiveness and efficiency of domestic 0 and international aviation. 1980 2009 2020 (Planned) 3 1. Introduction – Reform of the Chinese Aviation System • Consolidation Strong national hubs + insufficient regional coverage • Regional commuter airlines could fill this gap by partnering with China’s major carriers and serving the second-tier and emerging hubs (Shaw, 2009) 4 1. Introduction – Aircraft of the Short Haul Chinese Aviation System Narrow Body Jet Fuel per seat: 7.9 gal Regional Jet Fuel per seat: 19.0 gal Turboprop Fuel per seat: 4.35 gal 5 1. -
The Historical Fuel Efficiency Characteristics of Regional Aircraft from Technological, Operational, and Cost Perspectives
The Historical Fuel Efficiency Characteristics of Regional Aircraft from Technological, Operational, and Cost Perspectives Raffi Babikian, Stephen P. Lukachko and Ian A. Waitz* Department of Aeronautics and Astronautics Massachusetts Institute of Technology 77 Massachusetts Ave., Cambridge, MA 02139 ABSTRACT To develop approaches that effectively reduce aircraft emissions, it is necessary to understand the mechanisms that have enabled historical improvements in aircraft efficiency. This paper focuses on the impact of regional aircraft on the U.S. aviation system and examines the technological, operational and cost characteristics of turboprop and regional jet aircraft. Regional aircraft are 40% to 60% less fuel efficient than their larger narrow- and wide-body counterparts, while regional jets are 10% to 60% less fuel efficient than turboprops. Fuel efficiency differences can be explained largely by differences in aircraft operations, not technology. Direct operating costs per revenue passenger kilometer are 2.5 to 6 times higher for regional aircraft because they operate at lower load factors and perform fewer miles over which to spread fixed costs. Further, despite incurring higher fuel costs, regional jets are shown to have operating costs similar to turboprops when flown over comparable stage lengths. Keywords: Regional aircraft, environment, regional jet, turboprop 1. INTRODUCTION The rapid growth of worldwide air travel has prompted concern about the influence of aviation activities on the environment. Demand for air travel has grown at an average rate of 9.0% per year since 1960 and at approximately 4.5% per year over the last decade (IPCC, 1999; FAA, 2000a). Barring any serious economic downturn or significant policy changes, various * Contact author: 617-253-0218 (phone), 617-258-6093 (fax), [email protected] (email) 1 organizations have estimated future worldwide growth will average 5% annually through at least 2015 (IPCC, 1999; Boeing, 2000; Airbus, 2000). -
Special Rates for Your Group
Special rates for your group. Group travel discounts include: 5% off the lowest applicable fare For reservations, call 1-800-433-1790, and refer to the authorization number below: AN# A8799AQ Now Book your Discount Fares Directly Online To take advantage of a 5% discount on AA, American Eagle and AmericanConnections. It's simple! After you have selected your flight(s) under the "Enter Passenger Details" tab, go to the "AA.com Promotion Code" field and enter in your Authorization Code without the leading “A”. Go directly to www.aa.com to book your flights. Discount Fares are valid for travel on American Airlines, American Eagle®, AmericanConnection®, oneworld Alliance, and codeshare partners from anywhere to your meeting destination. Reservations and Ticketing For reservations and ticketing information, call AmericanAirlines Meeting Services Desk, or have your travel professional call 1-800-433-1790 from anywhere in the United States or Canada, seven days a week, from 6:00 a.m. to 12:00 midnight (Central Time), and reference the authorization number shown above. Reservations for the hearing and speech impaired are also available at 1-800-543-1586. There is a $20.00USD reservations service fee for tickets issued through AA reservations, and a $30.00USD ticketing fee for tickets issued at the airport. Frequent Flyer Miles Earn AAdvantage® miles for your trip. The AAdvantage program was the first airline frequent traveler program, and for more than 20 years has offered members the most innovative ways to earn travel awards. Enroll online at www.aa.com. *Seats are limited. American Airlines, American Eagle, AmericanConnection, American Airlines Group & Meeting Travel and AAdvantage are marks of American Airlines, Inc. -
2. Afterburners
2. AFTERBURNERS 2.1 Introduction The simple gas turbine cycle can be designed to have good performance characteristics at a particular operating or design point. However, a particu lar engine does not have the capability of producing a good performance for large ranges of thrust, an inflexibility that can lead to problems when the flight program for a particular vehicle is considered. For example, many airplanes require a larger thrust during takeoff and acceleration than they do at a cruise condition. Thus, if the engine is sized for takeoff and has its design point at this condition, the engine will be too large at cruise. The vehicle performance will be penalized at cruise for the poor off-design point operation of the engine components and for the larger weight of the engine. Similar problems arise when supersonic cruise vehicles are considered. The afterburning gas turbine cycle was an early attempt to avoid some of these problems. Afterburners or augmentation devices were first added to aircraft gas turbine engines to increase their thrust during takeoff or brief periods of acceleration and supersonic flight. The devices make use of the fact that, in a gas turbine engine, the maximum gas temperature at the turbine inlet is limited by structural considerations to values less than half the adiabatic flame temperature at the stoichiometric fuel-air ratio. As a result, the gas leaving the turbine contains most of its original concentration of oxygen. This oxygen can be burned with additional fuel in a secondary combustion chamber located downstream of the turbine where temperature constraints are relaxed. -
American Airlines Group Inc. Incoming Letter Dated February 6, 2018
March 23, 2018 Brian D. Miller Latham & Watkins LLP [email protected] Re: American Airlines Group Inc. Incoming letter dated February 6, 2018 Dear Mr. Miller: This letter is in response to your correspondence dated February 6, 2018 concerning the shareholder proposal (the “Proposal”) submitted to American Airlines Group Inc. (the “Company”) by Flyers Rights Education Fund for inclusion in the Company’s proxy materials for its upcoming annual meeting of security holders. Copies of all of the correspondence on which this response is based will be made available on our website at http://www.sec.gov/divisions/corpfin/cf-noaction/14a-8.shtml. For your reference, a brief discussion of the Division’s informal procedures regarding shareholder proposals is also available at the same website address. Sincerely, Matt S. McNair Senior Special Counsel Enclosure cc: Paul Hudson Flyers Rights Education Fund [email protected] March 23, 2018 Response of the Office of Chief Counsel Division of Corporation Finance Re: American Airlines Group Inc. Incoming letter dated February 6, 2018 The Proposal requests that the board prepare a report on the regulatory risk and discriminatory effects of smaller cabin seat sizes on overweight, obese and tall passengers. There appears to be some basis for your view that the Company may exclude the Proposal under rule 14a-8(i)(7), as relating to its ordinary business operations. Accordingly, we will not recommend enforcement action to the Commission if the Company omits the Proposal from its proxy materials in reliance -
U.S. Customs and Border Protection, DHS; Treas. § 122.25
U.S. Customs and Border Protection, DHS; Treas. Pt. 122 PART 122—AIR COMMERCE 122.44 Crew baggage declaration. 122.45 Crew list. REGULATIONS 122.46 Crew purchase list. 122.47 Stores list. Sec. 122.48 Air cargo manifest. 122.0 Scope. 122.48a Electronic information for air cargo required in advance of arrival. Subpart A—General Definitions and 122.48b Air Cargo Advance Screening Provisions (ACAS). 122.1 General definitions. 122.49 Correction of air cargo manifest or 122.2 Other Customs laws and regulations. air waybill. 122.3 Availability of forms. 122.49a Electronic manifest requirement for 122.4 English language required. passengers onboard commercial aircraft 122.5 Reproduction of Customs forms. arriving in the United States. 122.49b Electronic manifest requirement for Subpart B—Classes of Airports crew members and non-crew members on- board commercial aircraft arriving in, 122.11 Designation as international airport. continuing within, and overflying the 122.12 Operation of international airports. United States. 122.13 List of international airports. 122.49c Master crew member list and master 122.14 Landing rights airport. non-crew member list requirement for 122.15 User fee airports. commercial aircraft arriving in, depart- ing from, continuing within, and over- Subpart C—Private Aircraft flying the United States. 122.49d Passenger Name Record (PNR) infor- 122.21 Application. mation. 122.22 Electronic manifest requirement for 122.50 General order merchandise. all individuals onboard private aircraft arriving in and departing from the Subpart F—International Traffic Permit United States; notice of arrival and de- parture information. 122.51 Aircraft of domestic origin registered 122.23 Certain aircraft arriving from areas in the U.S. -
Who Is Most Impacted by the New Lease Accounting Standards?
Who is Most Impacted by the New Lease Accounting Standards? An Analysis of the Fortune 500’s Leasing Obligations What Do Corporations Lease? Many companies lease (rather than buy) much of the equipment and real estate they use to run their business. Many of the office buildings, warehouses, retail stores or manufacturing plants companies run their operations from are leased. Many of the forklifts, trucks, computers and data center equipment companies use to run their business is leased. Leasing has many benefits. Cash flow is one. Instead of outlaying $300,000 to buy five trucks today you can make a series of payments over the next four years to lease them. You can then deploy the cash you saved towards other investments that appreciate in value. Also, regular replacement of older technology with the latest and greatest technology increases productivity and profitability. Instead of buying a server to use in your data center for five years, you can lease the machines and get a new replacement every three years. If you can return the equipment on time, you are effectively outsourcing the monetization of the residual value in the equipment to an expert third-party, the leasing company. Another benefit of leasing is the accounting, specifically the way the leases are reported on financial statements such as annual reports (10-Ks). Today, under the current ASC 840 standard, leases are classified as capital leases or operating leases. Capital leases are reported on the balance sheet. Operating leases are disclosed in the footnotes of your financial statements as “off balance sheet” operating expenses and excluded from important financial ratios such as Return on Assets that investors use to judge a company’s performance. -
The Power for Flight: NASA's Contributions To
The Power Power The forFlight NASA’s Contributions to Aircraft Propulsion for for Flight Jeremy R. Kinney ThePower for NASA’s Contributions to Aircraft Propulsion Flight Jeremy R. Kinney Library of Congress Cataloging-in-Publication Data Names: Kinney, Jeremy R., author. Title: The power for flight : NASA’s contributions to aircraft propulsion / Jeremy R. Kinney. Description: Washington, DC : National Aeronautics and Space Administration, [2017] | Includes bibliographical references and index. Identifiers: LCCN 2017027182 (print) | LCCN 2017028761 (ebook) | ISBN 9781626830387 (Epub) | ISBN 9781626830370 (hardcover) ) | ISBN 9781626830394 (softcover) Subjects: LCSH: United States. National Aeronautics and Space Administration– Research–History. | Airplanes–Jet propulsion–Research–United States– History. | Airplanes–Motors–Research–United States–History. Classification: LCC TL521.312 (ebook) | LCC TL521.312 .K47 2017 (print) | DDC 629.134/35072073–dc23 LC record available at https://lccn.loc.gov/2017027182 Copyright © 2017 by the National Aeronautics and Space Administration. The opinions expressed in this volume are those of the authors and do not necessarily reflect the official positions of the United States Government or of the National Aeronautics and Space Administration. This publication is available as a free download at http://www.nasa.gov/ebooks National Aeronautics and Space Administration Washington, DC Table of Contents Dedication v Acknowledgments vi Foreword vii Chapter 1: The NACA and Aircraft Propulsion, 1915–1958.................................1 Chapter 2: NASA Gets to Work, 1958–1975 ..................................................... 49 Chapter 3: The Shift Toward Commercial Aviation, 1966–1975 ...................... 73 Chapter 4: The Quest for Propulsive Efficiency, 1976–1989 ......................... 103 Chapter 5: Propulsion Control Enters the Computer Era, 1976–1998 ........... 139 Chapter 6: Transiting to a New Century, 1990–2008 .................................... -
American Airlines Uses Partnerships to Grow Its Network, O Er Customers More Choice, and Provide a Premier Travel Experience In
NEWS RELEASE American Airlines Uses Partnerships to Grow Its Network, Oer Customers More Choice, and Provide a Premier Travel Experience in the Northeast 4/21/2021 FORT WORTH, Texas — American Airlines and JetBlue are making it easy for customers to return to travel while continuing to deliver on the promise of growth and customer choice as a result of their Northeast Alliance. Beginning Oct. 31, American is adding new service from New York (JFK) to New Delhi (DEL) and will oer customers the fastest growing network from the United States to India than any other airline partnership program. New York and Boston will see signicant growth with new nonstop service and additional codeshare routes as a result of the Northeast Alliance with JetBlue. Customers will have a premier customer experience when traveling in the Northeast with the fastest secure side connecter at JFK and an industry-leading product. Expansion of the airline’s network will provide better global connectivity for growing markets like Austin, Texas, and Nashville, Tennessee, for customers who are ready to travel. FORT WORTH, Texas — American Airlines and JetBlue are making it easy for customers to return to travel while continuing to deliver on the promise of growth and customer choice as a result of their Northeast Alliance. “Our global partnerships are designed to grow our network to benet our customers, team members, and investors,” said Vasu Raja, American’s Chief Revenue Ocer. “Since the inception of our partnership with JetBlue, we have committed to oering customers more ights, more destinations and a better experience when traveling. -
DENNIS E DUSTRY CONSOLIDATION . ND FL. L Ite
i::i DENNIS E_DUSTRY CONSOLIDATION ._ND FL._L_ItE AJRLLNE _TWORK STRUCTURES IN EUROPE m NigelDc_n_ Senior Research Fellow Transport Studies Group University of Westminster 35 Marylebone Road LONDON NW1 5LS Tel: .444 20 79!1 5000 ext 334A. Fax: +44 20 7911 5057 e-mall: [email protected] A__hs!ra__ct In the current downaa'n in demand for air travel, major airlines are revising and rationalising their networks in an attempt to improve financial performance and strengthen their defences against both new entrants and traditional rivals. Expansion of commercial agreements or alliances with other airlines has become a key reaction to the increasingly competitive marketplace. In the absence, for regulatory reasons, of cross-border mergers these are the principal means by which the industry can consolidate internationally. The failure of airlines such as Sabena and Swlssair has also enforced restructuring at some of Europe's busier airports. This paper analyses the developments which have been taking place and attempts to itentify the implications for airline network _s and the function of different hub airports. Airlines have rationalised their networks by withdrawing services that feed the hubs of rival alliances. New ;links have however _ created hthatare made feasible by the alliance support. The range of services available to passengers in long-haul markets to/from Europe is evaluated before and after recent industry reorganisation. Hubs are crucial to interlink the route networks of parmers in an alliance. However, duplication between nearby hub airports that find themselves within the same airline alliance can lead to loss of service at the weaker locations. -
BORDER SECURITY: CBP Aims to Prevent High-Risk Travelers From
United States Government Accountability Office Report to Congressional Requesters January 2017 BORDER SECURITY CBP Aims to Prevent High-Risk Travelers from Boarding U.S.- Bound Flights, but Needs to Evaluate Program Performance GAO-17-216 January 2017 BORDER SECURITY CBP Aims to Prevent High-Risk Travelers from Boarding U.S.-Bound Flights, But Needs to Highlights of GAO-17-216, a report to Evaluate Program Performance congressional requesters Why GAO Did This Study What GAO Found DHS seeks to identify and interdict The Department of Homeland Security’s (DHS) U.S. Customs and Border international air travelers who are Protection (CBP) analyzes traveler data and threat information to identify high- potential security threats to the United risk travelers before they board U.S.-bound flights. CBP’s National Targeting States, such as foreign fighters and Center (NTC), the primary entity responsible for these analyses, conducts potential terrorists, human traffickers, traveler data matching which assesses whether travelers are high-risk by and otherwise inadmissible persons, at matching their information against U.S. government databases and lists, and the earliest possible point in time. In rules-based targeting, which enables CBP to identify unknown high-risk fiscal year 2015, CBP processed more individuals. CBP operates multiple predeparture programs that use the results of than 104 million U.S.-bound air NTC’s analyses to help identify and interdict high-risk travelers before they board travelers. CBP operates various U.S.-bound flights. CBP officers inspect all U.S. bound travelers on precleared predeparture programs domestically and overseas that are designed to flights at the 15 Preclearance locations and, if deemed inadmissible, a traveler identify and interdict high-risk travelers will not be permitted to board the aircraft. -
Reusable Ram Booster Launch Design Emphasizes Use of Existing
National Aeronautics and Space Administration technology opportunity Reusable Ram Booster Launch Design Emphasizes Use of Existing Components to Achieve Space Transport for Satellites and Spacecraft Using off-the-shelf technology to make space transport more affordable Engineers at NASA’s Dryden Flight Research Center have designed a partially reusable launch Benefits system to propel a payload-bearing spacecraft t Economical: Lowers the cost of space access, into a low Earth orbit (LEO). The concept design with use of reusable components and a simplified propulsion system for the three-stage Ram Booster employs existing turbofan engines, ramjet propulsion, and an already t Efficient: Maximizes use of already operational components by using off-the-shelf technology operational third-stage rocket to achieve LEO t Effective: Enables fast turnaround between missions, for satellites and other spacecraft. Excluding with reuse of recoverable first and second stages payload (which stays in orbit), over 97 percent t Safer: Operates with jet fuel in lower stages, of the Ram Booster’s total dry weight (including eliminating the need for hazardous hypergolic or cryogenic propellants and complex reaction three stages) is reusable. As the design also control systems draws upon off-the-shelf technology for many t Simpler: Offers a single fuel type for air-breathing of its components, this novel approach to space turbofan and ramjet engines transport dramatically lowers the cost of access to t Novel: Approaches space launch complexities space. The technology has applications for NASA, in a new way, providing a conceptual technical breakthrough for first and second stage boost the military, and the commercial aerospace sectors.