/sci/ - Science & Math

>>10045047
>So why hasn't it been able to stay on schedule?

you don't increase shareholder value by delivering. you stretch out that cost plus contract as long as possible

>>9929103
>A Star 48BV third stage, built by Northrop Grumman, provides a significant kick of additional velocity for the Parker Solar Probe on its journey into the inner solar system.

>Northrop Grumman

lol as soon as the acquisition was approved they scrubbed OrbitalATK's name everywhere

>>9882158

>Parker Probe
>Launch mass 685 kg (1,510 lb)[1]
>Dry mass 555 kg (1,224 lb)
>Payload mass 50 kg (110 lb)

>Delta IV Heavy
they gots to have that deltaV

>>9540905
>The cost to recover and recondition the H- 1 engine was approximately 5 per cent of the cost of a new one.

holy shit, and thats for a salt water marinated one

>>9491104
>What is he thinking right now?

he doesn't have to give a fuck, he's backed by the EU no matter what happens

>>9464208

maybe they loaded the wrong settings for that launch pad

like the russians loading navigation software for baikonur instead of vostochny

>>9424089
>There is no way the payload cost that much
billion dollar satellites gotta show up somewhere in the budget and are big

2x for 6 billion
https://en.wikipedia.org/wiki/USA-224

>>9400156
>>9400202

such a waste to use reusable engines in a disposable application

rocketdyne really fucked up in the long run, they thought they would be the only game in town for 40+ years, then the russians came in with cheap RD180s, they tried to get in on that with $1M refurbed NK33s by selling them at who knows what price to OATK until they were forced to buy them back after that antares blew up. they had the F1 and that's dead, the big part of both deltas and atlas costs are AR engines, first and or second stages. you could buy ~40 merlins for one SSME

>>9382737
i wonder how those attachment points work

i guess the center mount does most of the work, the outer ones look like pistons with the heads attached to the center booster in the rectangular boxes. they detach from the center, fold up and retract?

delta iv heavy on the bottom has two close to the centers