Accession Number : ADA118828

Title :   A Technical Analysis of Rehosting the National Airspace System Software.

Descriptive Note : Final rept. Nov 80-Aug 81,


Personal Author(s) : Britting,K ; Cocanower,A ; Gupta,A ; Hsu,M ; Marcus,F

PDF Url : ADA118828

Report Date : Oct 1981

Pagination or Media Count : 162

Abstract : The Federal Aviation Administration (FAA) is planning to replace within the next ten years the computers used to provide en route air traffic control services; in carrying out this replacement there are many different strategies the FAA could follow. The purpose of this report is to study the strategy known as rehosting the National Airspace System (NAS) software on instruction-compatible machines. The idea is that the current computers (and associated peripherals) would be replaced by modern hardware that executes the same machine-language instructions. The current NAS software would be changed only insofar as proves necessary for the software to run on the new machines; these changes to the software are expected to be minor. The rehosting strategy is evaluated in seven areas. First, how reliable is the system? Second, how well will the system perform under expected workloads? Third, how serious are the technical obstacles to adapting the software to run on the new machines? Fourth, what would the new system cost? Fifth, what problems would be encountered during the transition to the new system. Sixth, how quickly could the system be procured? Seventh, how well adapted is the system to future growth. The conclusion is that the rehost strategy is technically feasible, but there is some uncertainty about what this strategy would cost and how long the procurement process would take. (Author)

Descriptors :   *Air traffic control systems, *Computers, *Replacement, Government procurement, Compatibility, Strategy, Feasibility studies, Decision making, Reliability, Performance(Engineering), Adaptation, Costs, Transitions, Procurement, Growth(General)

Subject Categories : Computer Hardware
      Air Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE