* 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
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