Do you know of any reliable statistics on the successrate of (aero)space project development?

How many projects suffer major delay and/or significant over budgets? How many projects get cancelled completly during development?

I'm mainly interested in official projects at the taxpayers expense, I'm not so much interested in private studies of companies or universities.

I guess that excludes also very early projects in Pre-Phase A (NASA)/ Phase 0 (ESA), since investments up to this point are quite small.

(For clarification: I'm working on a thesis about preliminary design methods and some numbers would come in handy to support my point that an approvement of conventional tools and methods would affect the successrate of big aerospace projects)

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    $\begingroup$ Please define success. There are lists of launchers at Wikipedia, and tons of unfinished designs are gathering dust in the archives. $\endgroup$ – Deer Hunter Aug 14 '15 at 16:51
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    $\begingroup$ Canceled at what stage? There's a huge difference if they cancel some train before I buy the ticket, or once I'm on it. $\endgroup$ – TildalWave Aug 14 '15 at 17:00
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    $\begingroup$ That is a very good question! I guess I would call it success if a project enters Operation (Life Cycle Phase E). But you could argue that a projects that leaves Development (Phase D) also counts as a succes. I'm looking for projects that get cancelled due to major delays or significant over budgets during their development, that means somewhere inbetween Phases 0-D in their life cycles. $\endgroup$ – cl10k Aug 14 '15 at 17:14
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    $\begingroup$ "after a more or less significant amount " is not a very fine definition. Would you say that Shuttle falls into your list? And it went on for 30 years. In fact, I'd say that all US human spaceflight programs, by your definition, have been cancelled...except for ISS. $\endgroup$ – Organic Marble Aug 14 '15 at 19:13
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    $\begingroup$ @Hobbes ESA: ECSS-M-30A (Chapter 4) & NASA: SP-6105 (Chapter 3) $\endgroup$ – cl10k Aug 14 '15 at 20:22

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