Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 80
Book Description
Evaluation of Laminar Flow Control Systems for Subsonic Commercial Transport Aircraft: Executive Summary
Author: Evaluation of Laminar Flow Control Systems Concepts for Subsonic Commercial Transport Aircraft
Author: Scientific and Technical Aerospace Reports
Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 488
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Technology Developments for Laminar Boundary Layer Control on Subsonic Transport Aircraft
Author: R. D. WagnerPublisher:
ISBN:
Category :
Languages : en
Pages : 13
Book Description
Since the beginning of the NASA Aircraft Energy Efficiency (ACEE) program in 1976, significant progress has been made in the development of laminar flow technology for commercial transports. Exploitation of new materials, fabrication methods, analysis techniques, and design concepts is providing convincing evidence that practical laminar flow control (LFC) systems for future transports could become a reality. Other ACEE program studies indicate that extensive laminar flow might be achieved on small transports with natural laminar flow (NLF) wings or hybrids of NLF and LFC (i.e., leading-edge suction on an NLF type of wing). This paper presents an overview of these laminar flow technology developments and describes future efforts in a broadened NASA program to explore the potential and evaluate the practicality of different laminar flow concepts for commercial transports.
Study of the Application of Advanced Technologies to Laminar Flow Control Systems for Subsonic Transports. Volume 1: Summary
Author: NASA Reference Publication
Author: Application of Laminar Flow Control to Large Subsonic Military Transport Airplanes
Author: Robert M. KulfanPublisher:
ISBN:
Category :
Languages : en
Pages : 150
Book Description
A Preliminary Design study has been made to investigate the impact of the application of laminar flow control on the performance, weight, fuel consumption, and economics of a large transport airplane designed to carry a heavy payload (350,000 lb) for a long range (10,000 nmi). The study was conducted in three phases. In the first phase, conceptual design investigations were conducted to identify the features of an LFC airplane optimized to accomplish the mission objectives. A reference turbulent airplane also was developed in this phase. Design and analysis studies were made to develop the final LFC configuration. This configuration was sized to determine the gross weight, engine size, wing area, and fuel requirements necessary to achieve the design mission. Various performance trade and sensitivity studies were conducted for the turbulent and LFC airplanes in the third phase. Life-cycle and operating cost evaluations were also made. A valid assessment of an LFC airplane must be preceded by an extensive design, development, and flight test program. Consequently, this study focused on identifying the relative benefits from applying LFC, and on the sensitivites of these relative benefits to the current major LFC uncertainty items.
Monthly Catalogue, United States Public Documents
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1100
Book Description
Monthly Catalog of United States Government Publications
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1388
Book Description
Government Reports Annual Index
Author: Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 1092
Book Description