* Software on SpaceX / Blue Origin projects
@ 2016-04-08 21:09 Alejandro R. Mosteo
2016-04-08 21:18 ` Paul Rubin
0 siblings, 1 reply; 6+ messages in thread
From: Alejandro R. Mosteo @ 2016-04-08 21:09 UTC (permalink / raw)
So SpaceX just achieved its first successful landing of the Falcon
rocket, and not long ago Blue Origin did something similarly remarkable.
Whenever I see these feats of engineering I feel the tingle of my
real-time software itch and wonder what they use for these projects.
Any idea if there's any Ada in there, or what they use in general?
Cheers,
Alex.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Software on SpaceX / Blue Origin projects
2016-04-08 21:09 Software on SpaceX / Blue Origin projects Alejandro R. Mosteo
@ 2016-04-08 21:18 ` Paul Rubin
2016-04-09 3:10 ` Anh Vo
0 siblings, 1 reply; 6+ messages in thread
From: Paul Rubin @ 2016-04-08 21:18 UTC (permalink / raw)
"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++ :(
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Software on SpaceX / Blue Origin projects
2016-04-08 21:18 ` Paul Rubin
@ 2016-04-09 3:10 ` Anh Vo
2016-04-09 6:36 ` Georg Bauhaus
0 siblings, 1 reply; 6+ messages in thread
From: Anh Vo @ 2016-04-09 3:10 UTC (permalink / raw)
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.
Anh Vo
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Software on SpaceX / Blue Origin projects
2016-04-09 3:10 ` Anh Vo
@ 2016-04-09 6:36 ` Georg Bauhaus
2016-04-09 14:35 ` Anh Vo
0 siblings, 1 reply; 6+ messages in thread
From: Georg Bauhaus @ 2016-04-09 6:36 UTC (permalink / raw)
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. ;-)
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Software on SpaceX / Blue Origin projects
2016-04-09 6:36 ` Georg Bauhaus
@ 2016-04-09 14:35 ` Anh Vo
2016-04-09 20:07 ` Niklas Holsti
0 siblings, 1 reply; 6+ messages in thread
From: Anh Vo @ 2016-04-09 14:35 UTC (permalink / raw)
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.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Software on SpaceX / Blue Origin projects
2016-04-09 14:35 ` Anh Vo
@ 2016-04-09 20:07 ` Niklas Holsti
0 siblings, 0 replies; 6+ messages in thread
From: Niklas Holsti @ 2016-04-09 20:07 UTC (permalink / raw)
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.)
--
Niklas Holsti
Tidorum Ltd
niklas holsti tidorum fi
. @ .
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2016-04-09 20:07 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-04-08 21:09 Software on SpaceX / Blue Origin projects Alejandro R. Mosteo
2016-04-08 21:18 ` Paul Rubin
2016-04-09 3:10 ` Anh Vo
2016-04-09 6:36 ` Georg Bauhaus
2016-04-09 14:35 ` Anh Vo
2016-04-09 20:07 ` Niklas Holsti
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox