Accession Number:

ADA056521

Title:

Spare Memory and Timing Parameters in Avionics Computer System Requirements

Descriptive Note:

Master's thesis

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s):

• Wigle, Gary B.

Report Date:

1977-12-01

Pagination or Media Count:

90.0

Abstract:

Avionics computers require continuous software maintenance support during the life cycle of the airborne system. Spare memory and timing capability should be provided with the initial acquisition of the system. Too often, additional capability must be acquired at a later date and at a high cost. Current recommendations for spare capacity vary between 20 and 100 percent. An analysis has been made on 25 computers in 14 Air Force airborne systems to determine the growth of software and hardward size to date. The results of this analysis indicate that 100-300 percent spare memory should be provided in avionics computers that process data for navigation, weapons control, radar, electronic warfare, or any other function that has changing mission requirements. Also, only 25 percent spare memory is needed in avionics computers associated with missiles, status monitoring, fault isolation, or similar functions. Not enough data is available to reach any sound conclusions concerning the timing in avionics computers.

Descriptors:

• *MEMORY DEVICES
• *COMPUTER PROGRAMS
• *AVIONICS
• COMPUTER PROGRAMMING
• FIRE CONTROL COMPUTERS
• THESES
• TIME
• ATTACK AIRCRAFT
• JET FIGHTERS
• LIFE CYCLES
• NAVIGATION COMPUTERS
• MILITARY REQUIREMENTS
• DATA PROCESSING
• AIRBORNE

Subject Categories:

• Attack and Fighter Aircraft
• Computer Programming and Software
• Computer Hardware

Distribution Statement:

APPROVED FOR PUBLIC RELEASE