Definition of avionics concepts for a heavy lift cargo vehicle, volume 2

A cost effective, multiuser simulation, test, and demonstration facility to support the development of avionics systems for future space vehicles is defined. The technology needs and requirements of future Heavy Lift Cargo Vehicles (HLCVs) are analyzed and serve as the basis for sizing of the avionics facility although the lab is not limited in use to support of HLCVs. Volume 2 is the technical volume and provides the results of the vehicle avionics trade studies, the avionics lab objectives, the lab's functional requirements and design, physical facility considerations, and a summary cost estimate

A Fuzz Testing Approach for Embedded Avionic Software

Fuzz testing is a technique that can be used to test software in order to discover potential flaws and vulnerabilities. This particular approach is receiving a quick widespread adoption to test also embedded software since there is a huge increase in these kinds of software. This adoption also includes the avionic field, where fuzz testing is currently used to test the software to ensure the robustness of the software and its compliance with the standards that regulate its behavior. Airbus Helicopters tried to research this approach in order to discover its potentiality, leading to the creation of this work, which will focus on researching the application of fuzz testing to embedded avionic software. The objective of the research was to find if it was possible to apply the fuzz testing on an embedded avionic software by using available fuzz tools, more specifically available open-source fuzzing tools. Moreover, since the scientific literature does not provide guidelines on how to perform this approach towards this specific kind of software, this work will try to give an idea of how to apply the fuzz testing on a targeted avionic system, which in this case is a software component of a NH90 Airbus Helicopter. The results of this study demonstrate that it is feasible to apply a fuzz testing approach to embedded avionic software, but only if the target code has undergone adequate preparations. If not, this approach may prove challenging to implement. Together with the suggested compilers and used software, it was also shown that the used components and measurements were appropriate in the fuzz testing application

The Software Factory: Integrating CASE Technologies to Improve Productivity

This report addresses the use of computer-aided software engineering (CASE) technology for the development of aircraft software.Lean Aerospace Initiativ

Avionics architecture studies for the entry research vehicle

This report is the culmination of a year-long investigation of the avionics architecture for NASA's Entry Research Vehicle (ERV). The Entry Research Vehicle is conceived to be an unmanned, autonomous spacecraft to be deployed from the Shuttle. It will perform various aerodynamic and propulsive maneuvers in orbit and land at Edwards AFB after a 5 to 10 hour mission. The design and analysis of the vehicle's avionics architecture are detailed here. The architecture consists of a central triply redundant ultra-reliable fault tolerant processor attached to three replicated and distributed MIL-STD-1553 buses for input and output. The reliability analysis is detailed here. The architecture was found to be sufficiently reliable for the ERV mission plan

Proceedings of the Thirteenth Annual Software Engineering Workshop

Topics covered in the workshop included studies and experiments conducted in the Software Engineering Laboratory (SEL), a cooperative effort of NASA Goddard Space Flight Center, the University of Maryland, and Computer Sciences Corporation; software models; software products; and software tools

First International Conference on Ada (R) Programming Language Applications for the NASA Space Station, volume 2

Topics discussed include: reusability; mission critical issues; run time; expert systems; language issues; life cycle issues; software tools; and computers for Ada

Advanced Manned Launch System (AMLS) study

To assure national leadership in space operations and exploration in the future, NASA must be able to provide cost effective and operationally efficient space transportation. Several NASA studies and the joint NASA/DoD Space Transportation Architecture Studies (STAS) have shown the need for a multi-vehicle space transportation system with designs driven by enhanced operations and low costs. NASA is currently studying an advanced manned launch system (AMLS) approach to transport crew and cargo to the Space Station Freedom. Several single and multiple stage systems from air-breathing to all-rocket concepts are being examined in a series of studies potential replacements for the Space Shuttle launch system in the 2000-2010 time frame. Rockwell International Corporation, under contract to the NASA Langley Research Center, has analyzed a two-stage all-rocket concept to determine whether this class of vehicles is appropriate for the AMLS function. The results of the pre-phase A study are discussed

SSTAC/ARTS review of the draft Integrated Technology Plan (ITP). Volume 6: Controls and guidance

Viewgraphs of briefings from the Space Systems and Technology Advisory Committee (SSTAC)/ARTS review of the draft Integrated Technology Plan (ITP) on controls and guidance are included. Topics covered include: strategic avionics technology planning and bridging programs; avionics technology plan; vehicle health management; spacecraft guidance research; autonomous rendezvous and docking; autonomous landing; computational control; fiberoptic rotation sensors; precision instrument and telescope pointing; microsensors and microinstruments; micro guidance and control initiative; and earth-orbiting platforms controls-structures interaction