Application of test effectiveness in spacecraft testing

Lang, P.; Card, M. F.; Saalwaechter, S.; Godkin, T.

doi:10.1109/rams.1995.513289

Cited by 2 publications

(2 citation statements)

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“…In the software industry testing can consume fifty percent or more of the development costs (Bertolino 2009). Planning and sequencing of tests in the PD process is self-adaptive and depends on the organizational culture and experience within the company (Lang et al 2002). The cost of conducting a test including equipment, materials, facilities, staff and other engineering resources is a significant part of overall product development.…”

Section: Background and Contextmentioning

confidence: 99%

Integrating virtual and physical testing to accelerate the engineering product development process

Tahera

Earl

Eckert

2014

IJITM

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Testing is essential in developing a successful complex engineering product. System level integration and testing can use between 35% and 50% of development resources. External factors such as legislation and customer requirements drive essential testing whilst internal factors such company experience, affordability and organizational practice profoundly affect the overall testing plan. The main objective of this paper is to understand how testing is integrated into the product development process and how different types of testing are scheduled across the stages of product development. The paper reports a case study in a diesel engine company where the balance of virtual and physical testing is a key concern in reducing design time and cost. Integrating physical and virtual testing is more than process optimization of time and cost. It contributes to recasting the design process in response to changes in customer requirements as well as to design changes which arise during testing. The importance of dependencies across components, subsystems and tests is highlighted using a model using Design Structure Matrices and the advantages of integrating physical and virtual testing are analysed particularly in facilitating task overlap to reduce product development duration.

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Section: Background and Contextmentioning

confidence: 99%

Integrating virtual and physical testing to accelerate the engineering product development process

Tahera

Earl

Eckert

2014

IJITM

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“…Various contractors and NASA centers approach the test challenge from different perspectives and have different standards for measuring success 13 . The intensity and type of testing conducted often derives from the perceived risks associated with the design, the environment in which it will be used and in the experience of those designing the test process.…”

Section: Motivations For a Reconsideration Of The Role Of Testmentioning

confidence: 99%

The technical path to in-space testing of large optics

Friedman

2005

UV/Optical/IR Space Telescopes: Innovative Technologies and Concepts II

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Recent advances in technology and materials science have enabled a number of large telescopes on Earth. Adaptation of these methods to space systems (beyond those being demonstrated in the James Webb Space Telescope (JWST)) might provide an equivalent breakthrough in science productivity, but only if important problems related to integration and performance testing are resolved. This paper proposes a program of technology and process development that can lead to efficient and reliable methods for in-space performance testing, thereby overcoming the limitations imposed by testing in gravity, the limited size of test chambers, the challenges of creating synthetic starlight sources and other factors. Considerations are given to the inspace facilities that are required and the need for human presence or tele-presence during the test interval. Both deployed and assembled space systems are considered. The paper addresses the optimal allocation of various test activities including the role of modeling, and functional and performance testing. Risk issues are defined, along with the impacts that such an integration and test path imposes on the telescope designer.The principle goal of the paper is to define those parts of the test process that can (or must) be deferred until the system is in an operations-like environment and to define the processes and technologies that must be brought to maturity to assure that testing does not limit our ability to continue to upgrade our observational systems.

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Application of test effectiveness in spacecraft testing

Cited by 2 publications

References 1 publication

Integrating virtual and physical testing to accelerate the engineering product development process

Integrating virtual and physical testing to accelerate the engineering product development process

The technical path to in-space testing of large optics

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