Re: Software on SpaceX / Blue Origin projects

Paul Niklas Holsti skrev 2016-04-09:
"On 16-04-09 17:35 , Anh Vo wrote:

On Friday, April 8, 2016 at 11:36:54 PM UTC-7, Georg Bauhaus wrote:

On 09/04/16 05:10, Anh Vo wrote:

On Friday, April 8, 2016 at 2:18:32 PM UTC-7, Paul Rubin wrote:

"Alejandro R. Mosteo" <alejandro@mosteo.com> writes:

Any idea if there's any Ada in there, or what they use in general?

 They use C++ :(

 It is only 25% successful rate (one out of four) is not very successful.

 Normal engineering cannot pretend to design everything correctly
right from the beginning. So, expect some debugging runs. ;-)

 Design it landed horizontally, using rocket of course, may increase
success rate since it is not vulnerable to winds and waves.

As I understand it, only one Falcon-9 landing attempt failed because of stormy
conditions, and that attempt was in fact cancelled (it was deliberately "landed"
on the sea instead of on the drone ship). The other failures had other reasons,
I believe, and I've not seen SW problems mentioned as reasons.
(I'm very happy that SpaceX succeeded here. Not only do they deserve it, after
such persistence, but I think it is a very important step that will force all
launcher suppliers to aim towards reusable launchers, leading to huge
launch-cost reductions.)"
The European Space Agency uses SpaceX.
ESA spent circa the same amount of money on a SINGLE INSTRUMENT as Sweden spent on an ENTIRE SATELLITE with a similar instrument made by Omnisys.
ESA uses Serco. Politician Andy Slaughter said during a live interview on Channel-4 News two nights ago that Serco chose to pay a 68-million-pound fine to avoid criminal prosecution over underperformance. Cf. "Press release
Taxpayer compensated for overcharging as cross-government contracts review concludes
Serco will repay £68.5 million for charging errors as government welcomes progress on a corporate renewal plan.
From:
Cabinet Office, Ministry of Justice, Efficiency and Reform Group and Crown Commercial Service
Published
19 December 2013
[. . .]
The Justice Secretary Chris Grayling has confirmed a settlement with Serco to recompense the taxpayer £68.5 million [. . .]
[. . .]
[. . .] The company’s conduct under these contracts is now subject to a criminal investigation by the Serious Fraud Office.
On 28 August the Justice Secretary announced that Serco’s contract for escorting prisoners to courts (the “PECS” contract) had been referred to the City of London Police. This followed the discovery that members of Serco staff had been recording prisoners as having been delivered ready for court when in fact they were not. [. . .]"
Serco demanded ESA employees to sign false confirmations when ESA used to employ me.
ESA bribes countries so they refuse to investigate against ESA. So sans its georeturn policy, ESA manages to mismanage anyway.