SCIENTIFIC AND TECHNICAL AEROSPACE REPORTS

A Biweekly Publication of the National Aeronautics and Space Administration
VOLUME 44, ISSUE 11 - MAY 30, 2006

01 AERONAUTICS (GENERAL)
Includes general research topics related to manned and unmanned aircraft and the problems of flight within the Earth's atmosphere.

Also includes manufacturing, maintenance, and repair of aircraft.

For specific topics in aeronautics, see categories 02 through 09.

For information related to space vehicles see 12 Astronautics.

20060013308 Arizona State Univ., Tempe, AZ USA, Pratt and Whitney Aircraft Group, East Hartford, CT, USA

Flight-Critical Data Integrity Assurance for Ground-Based COTS Components

Lee, Y. H.; Krodel, J.; Mar. 2006; 90 pp.; In English Report No.(s): PB2006-109054; No Copyright; Avail.: CASI: A05, Hardcopy

Ground processing systems are likely to use commercial-off-the-shelf (COTS) software and hardware for maintaining flight critical data. Hence, the COTS ground processing systems must be trustworthy and secure in order to maintain the integrity of the data. This requires various approaches, including information protection, data integrity and access security. This report describes the results of our studies on the existing guidance governing the use of COTS components for safety-critical applications of ground-based systems, and the objectives of current guidance from the point of view of applicability and shortcomings. The use of hazard analysis and vulnerability analysis as a means for developing an effective risk mitigation strategy is provided and the relevance of the Rotorcraft Advisory Circular to a COTS components scenario is summarized. In order to address security and vulnerability concerns, several technologies such as encryption/decryption, authentication, access control, intrusion detection, etc., particularly in relation to application within a health and usage monitoring system (HUMS) context, are discussed. The report also includes two case studies involving COTS products to determine if they can be qualified by following existing software guidance, such as DO-178B and DO-278. NTIS

Applications Programs (Computers); Commercial Off-the-Shelf Products

20060013315 Kentucky Univ., Lexington, KY USA

Baseline Modeling of the Owensboro Cable-Stayed Bridge Over the Ohio River

Hu, J. D.; Harik, I. E.; Smith, S. W.; Gagel, J.; Campbell, J. E.; Mar. 2006; 146 pp.; In English Report No.(s): PB2006-110327; KTC-06-04/FRT116-02-1F; No Copyright; Avail.: National Technical Information Service (NTIS)

This report presents the baseline modeling of the Owensboro cable-stayed bridge which connects Owensboro, Kentucky and Rockport, Indiana over the Ohio River. The objective of this study is to establish the bridge baseline model via the dynamics-based technique and finite element method. NTIS

Finite Element Method; Rivers

Source: NASA