EDIT: Did some research, it seems that those tests (without the payload) already ran successfully, and that this accident happened during the fueling stage at T-3 minutes... that's super unlucky :/
In fairness, when did the government last lose a bird? Doesn't the ULA have a '100%' success rate (where success is getting payload to space, though some payloads fail to make it to the planned orbit)
There have been 133 successful shuttle launches, and 2 failed ones.
There have been 27 successful Falcon launches, and 2 failed ones.
Reentry, not landing.
A design flaw (foam) under launch stress resulted in foam shedding and leading edge wing impacts damaging tiles and ensuring loss of the vehicle on reentry.
I'd argue the failure was in design, triggered during launch, and manifested on reentry. But Columbia was doomed from seconds into flight.
Harder at least as in there are extra steps that can go wrong (re-entry + landing), I suppose it’s debatable which was really a more difficult engineering project…
"The Space Shuttle Endeavour, the orbiter built to replace the Space Shuttle Challenger, cost approximately $1.7 billion." http://www.nasa.gov/centers/kennedy/about/information/shuttl...
There is no such thing a 100% chance of success, everyone has a chance of failure. I would not put ESA more than a few % more reliable. Math says your satellite would need to be really expensive for the price difference to be worth it.
That "little" difference has huge huge economic repercussions, cost of insurance, ease of financing, and many other things. Not to mention that a satellite going boom can kill an operator if it doesn't have a backup. This isn't an insurance case where you get your money and try again the week after, building a satellite is a huge undertaking it takes years to build, years to negotiate the contracts for and you have to do it from scratch all over again if it goes boom.
Launch 1 costs $600m: total cost, $800m.
Launch 2 costs $200m: you can build 2 spare satellites for the same cost (assuming you don't pay for the launches that go boom; and even if you do, that still gives you one spare satellite).
Building 2 would cost more than double, or it will take twice as long.
There are huge lead times involved, subcontractors with other commitments and other bottlenecks in the pipeline. Not to mention that even if you do manage to build 2 in the same time window at only double the cost you still have the issue with the launch window, a launch accident would most likely ground the provider for a very long time which means you have to find another launch provider.
Spacecom had a launch window from spacex, spacex has a queue of 9-10 more launches already set, there will now be a huge delay and possible cancelation even if Spacecom had another unit they couldn't just launch it next month.
Space X has had 29 launches, 2 failures and 1 partial failure (F9-004) so a success rate of 89.6%.
Ariane on the other hand hasn't had a single failure or partial failure since 2002 so if you compare since Space X started its services it has a success rate of 100%. If you take the whole history of Ariane it has indeed a success rate of 95.2% or 95.4% for the Ariane 5 version but the fact that Ariane has flown 72 consecutive missions without failure (2002 - Present) compared to 14 for Space X (2012 - 2015) says a lot about their reliability.
[1]https://twitter.com/SpaceflightNow/status/771352977315684352...