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Now showing items 21-30 of 30
What drives spacecraft innovation? : a quantitative analysis of communication satellite history
(Massachusetts Institute of Technology, 2009)
The overall goal of this research is to develop a better understanding of how innovation can, and should, happen in the space sector. Part A: Towards an Empirical Measure of Spacecraft Innovation, frames the discussion of ...
Design for affordability in defense and aerospace systems using tradespace-based methods
(Massachusetts Institute of Technology, 2014)
Program failures have plagued the defense and aerospace industry for decades, as unanticipated cost and schedule overruns have rendered the development of systems ineffective in terms of time and cost considerations. This ...
Modernizing systems engineering : cognitive systems and model-based approaches for spacecraft architecture development
(Massachusetts Institute of Technology, 2014)
Systems engineering exists as a discipline to enable organizations to control and manage the development of complex hardware and software. These methods are particularly essential in the development of space systems, which ...
Public health impacts of excess NOx̳ emissions from Volkswagen diesel passenger vehicles in Germany
(Massachusetts Institute of Technology, 2017)
In September 2015, the Volkswagen Group (VW) admitted the use of "defeat devices" designed to lower emissions measured during VW vehicle testing for regulatory purposes. Globally, 11 million cars sold between 2008 and 2015 ...
Emergence of second-generation low earth orbit satellite constellations : a prospective technical, economic, and policy analysis
(Massachusetts Institute of Technology, 2018)
Modern proposals for Low Earth Orbit (LEO) satellite constellations underscore the tremendous potential and versatility of distributed spacecraft missions (DSMs), but they have also begun to stress the limits of the existing ...
Multilayer network modeling of change propagation for engineering change management
(Massachusetts Institute of Technology, 2010)
Engineering change management is a critical and challenging process within product development. One pervasive source of difficulty for this process is the phenomenon of change propagation, by which a change to one part or ...
Addressing design challenges in mechanical counterpressure spacesuit design and space-inspired informal education policy
(Massachusetts Institute of Technology, 2011)
Extravehicular activity (EVA), or spacewalks allows astronauts to accomplish some of the most important endeavors in space history. The importance of EVA will continue to increase as people venture further into our solar ...
Stakeholder value network analysis for space-based earth observations
(Massachusetts Institute of Technology, 2009)
The Earth Science and Applications decadal survey released by the National Research Council in 2007 presents both an ambitious engineering challenge and a challenge for the entire Earth science community to come together ...
Dynamic system perspective for design : ility-driving elements as responses to uncertainty
(Massachusetts Institute of Technology, 2014)
This thesis is concerned with the design of complex artificial systems. For such systems, there is a growing need to deliver value to stakeholders beyond the initial functional requirements and to cope with rapidly changing ...
Improving commonality implementation in the cockpits of commercial aircraft
(Massachusetts Institute of Technology, 2007)
Product development is a major source of competitive advantage in the commercial aircraft business. Judiciously implementing commonality across a range of products yields important benefits in this area. Thus, measuring ...