Aeronautical engineering: A continuing bibliography with indexes (supplement 284)

This bibliography lists 974 reports, articles, and other documents introduced into the NASA scientific and technical information system in Oct. 1992. The coverage includes documents on design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for aeronautical vehicles

A Concept of Operations for an Integrated Vehicle Health Assurance System

This document describes a Concept of Operations (ConOps) for an Integrated Vehicle Health Assurance System (IVHAS). This ConOps is associated with the Maintain Vehicle Safety (MVS) between Major Inspections Technical Challenge in the Vehicle Systems Safety Technologies (VSST) Project within NASA s Aviation Safety Program. In particular, this document seeks to describe an integrated system concept for vehicle health assurance that integrates ground-based inspection and repair information with in-flight measurement data for airframe, propulsion, and avionics subsystems. The MVS Technical Challenge intends to maintain vehicle safety between major inspections by developing and demonstrating new integrated health management and failure prevention technologies to assure the integrity of vehicle systems between major inspection intervals and maintain vehicle state awareness during flight. The approach provided by this ConOps is intended to help optimize technology selection and development, as well as allow the initial integration and demonstration of these subsystem technologies over the 5 year span of the VSST program, and serve as a guideline for developing IVHAS technologies under the Aviation Safety Program within the next 5 to 15 years. A long-term vision of IVHAS is provided to describe a basic roadmap for more intelligent and autonomous vehicle systems

Aeronautical engineering: A continuing bibliography with indexes (supplement 292)

This bibliography lists 675 reports, articles, and other documents recently introduced into the NASA scientific and technical information system database. Subject coverage includes the following: design, construction and testing of aircraft and aircraft engines; aircraft components, equipment, and systems; ground support systems; and theoretical and applied aspects of aerodynamics and general fluid dynamics

Aeronautical engineering: A cumulative index to a continuing bibliography (supplement 274)

This publication is a cumulative index to the abstracts contained in supplements 262 through 273 of Aeronautical Engineering: A Continuing Bibliography. The bibliographic series is compiled through the cooperative efforts of the American Institute of Aeronautics and Astronautics (AIAA) and the National Aeronautics and Space Administration (NASA). Seven indexes are included: subject, personal author, corporate source, foreign technology, contract number, report number, and accession number

Research and Technology, 1994

This report selectively summarizes the NASA Lewis Research Center's research and technology accomplishments for the fiscal year 1994. It comprises approximately 200 short articles submitted by the staff members of the technical directorates. The report is organized into six major sections: Aeronautics, Aerospace Technology, Space Flight Systems, Engineering and Computational Support, Lewis Research Academy, and Technology Transfer. A table of contents and author index have been developed to assist the reader in finding articles of special interest. This report is not intended to be a comprehensive summary of all research and technology work done over the past fiscal year. Most of the work is reported in Lewis-published technical reports, journal articles, and presentations prepared by Lewis staff members and contractors. In addition, university grants have enabled faculty members and graduate students to engage in sponsored research that is reported at technical meetings or in journal articles. For each article in this report a Lewis contact person has been identified, and where possible, reference documents are listed so that additional information can be easily obtained. The diversity of topics attests to the breadth of research and technology being pursued and to the skill mix of the staff that makes it possible

A method of active system safety

The concept of Active Safety proposed originally by Prof Schagaev [3][4][5][6] can be applied to provide additional improvement in safety of a system over its operational lifecycle by continuous analysis and assessment of the state of the system in real time of its operation and reacting dynamically to improve its safety. This thesis develops the concept, theory and an implementation for a Method of Active System Safety (MASS) for application in the field of Aviation. The thesis has three parts: Part 1 researches the Aviation domain and current safety practices. General and Civil Aviation flight statistics are analysed to gain and understanding of flight risks, their causes and opportunities to improve safety. Current approaches to safety management are reviewed then the Principle of Active Safety (PASS) is introduced. Part 2 explores how PASS can be used as a basis for improving operational reliability, and so safety; the PASS algorithm is presented. A theoretical reliability model is then developed for the operational lifecycle of an aircraft and then conditional, preventive and PASS assisted maintenance strategies are evaluated. The beneficial effect of introducing PASS is then demonstrated at 2 levels: first during the lifecycle of use of an aircraft showing how apparent reliability can be improved and unnecessary maintenance reduced and second during each flight, using PASS to improve flight reliability. This uses an operational model (flight modes and limits) and a physical aircraft model (elements and fault detection) using dependency and recovery matrices. A means is proposed to provide timely and relevant safety advice based on continuous PASS analysis in real time of flight operations. A prototype implementation is described and a process proposed for characterisation of the system for a particular aircraft. The state of the art in Active Safety is reviewed and suggestions for further research are outlined. Part 3 contains supportive information in the Appendices. The contribution made to the knowledge of Active Safety is a theoretical and practical development of the concept in terms of aircraft classification, flight risk analysis, operational reliability modelling, fault analysis, the application of PASS in aviation and a system design for an Active Safety Monitor which operates in real time of flight

Research and technology, 1992

Selected research and technology activities at Ames Research Center, including the Moffett Field site and the Dryden Flight Research Facility, are summarized. These activities exemplify the Center's varied and productive research efforts for 1992

Aeronautical engineering: A continuing bibliography with indexes (supplement 317)

This bibliography lists 224 reports, articles, and other documents introduced into the NASA scientific and technical information system in May 1995. Subject coverage includes: design, construction and testing of aircraft and aircraft engines; aircraft components, equipment, and systems; ground support systems; and theoretical and applied aspects of aerodynamics and general fluid dynamics

Aerospace medicine and biology: A continuing bibliography with indexes (supplement 365)

This bibliography lists 211 reports, articles and other documents introduced into the NASA Scientific and Technical Information System during July 1992. Subject coverage includes: aerospace medicine and physiology, life support systems and man/system technology, protective clothing, exobiology and extraterrestrial life, planetary biology, and flight crew behavior and performance

Aeronautical Engineering: A special bibliography with indexes, Supplement 35, September 1973

This special bibliography lists 614 reports, articles, and other documents introduced into the NASA scientific and technical information system in August 1973