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From: Niklas Holsti <niklas.holsti@tidorum.invalid>
Newsgroups: comp.lang.ada
Subject: Re: Software on SpaceX / Blue Origin projects
Date: Sat, 9 Apr 2016 23:07:52 +0300
Organization: Tidorum Ltd
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Xref: news.eternal-september.org comp.lang.ada:30059
Date: 2016-04-09T23:07:52+03:00
List-Id: <comp.lang.ada>

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
       .      @       .