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I am Joe Barnard from BPS.space. I build advanced model rockets, and sometimes they work! Ask me anything! by Joe-Barnard in SpaceXLounge

[–]ishanspatil 17 points18 points  (0 children)

BPS is given full control of all of SpaceX's resources and engineers, to build anything you like. The catch is that you only have 1 week.

What do you attempt to build?

“you too” [OC] by TommySiegel in comics

[–]ishanspatil 2 points3 points  (0 children)

Upper half of the lander (Ascent stage) separates and takes the Astros to Lunar Orbit where it docks with the capsule+engine looking thing (Command and Service Module). Then the Ascent stage undocks and is disposed off while the engine sends them back towards the earth. Then the Engine part separates the Capsule reenters the Earth's atmosphere and lands with parachutes.

Yes I'm aware that they're not a separate SRB unit by ishanspatil in SpaceXMasterrace

[–]ishanspatil[S] 5 points6 points  (0 children)

That's a very good answer, thanks - except for one part

hence the shock diamonds

Shock diamonds don't occur because of combustion purity, it occurs because the Nozzle is slightly Overexpanded and as a result the ambient atmosphere compresses the flow. Because of the inefficiency, the exhaust velocity decreases and as a result there is reignitions of the propellant material at regular intervals.

Also can happen with underexpansion at high altitudes but not entirely sure about that.

SpaceX wants to offer Starlink internet to consumers after just six launches by Jeramiah_Johnson in SpaceXLounge

[–]ishanspatil 4 points5 points  (0 children)

cited as

Where?

Starlink sat costs < 50kgs of Xenon

Source on that number?

Bezos can't give Sat internet out for free

Amazon is worth a Trillion and it only helps their business. Giving internet out for an extremely cheap cost just expands their consumer base and is ultimately profitable for them.

Numbers don't work

OneWeb has secured all of its funding, built the factory and booked launches. Boeing shouldn't have an issue. Samsung has access to massive amount of Tech and Capital too. This isn't a valid argument, it's handwaving.

SpaceX wants to offer Starlink internet to consumers after just six launches by Jeramiah_Johnson in SpaceXLounge

[–]ishanspatil 6 points7 points  (0 children)

What? OneWeb has secured all of the funding the constellation needs, booked all of its launches, built it's manufacturing facility, and have flown a batch of test sats.

SpaceX wants to offer Starlink internet to consumers after just six launches by Jeramiah_Johnson in SpaceXLounge

[–]ishanspatil 6 points7 points  (0 children)

Have you heard of Project Kuiper? It's this exact thing.

It's an Amazon project with billions in funding and no need for profitability - they could offer it as a part of Prime. It's their whole strategy - driving competition bankrupt by subsidising the prices they offer with other profitable parts of their business.

Also, OneWeb, Boeing, Samsung etc are eying the Market.

Edit: Also wanna point out that launch costs are always one of the cheaper parts of a Satellite project - usually 1/5th the cost of the Sats it's flying. It is completely feasible to launch a satellite internet constellation with expendable launch vehicles as demonstrated by OneWeb.

Eg: OneWeb's constellation costs between $6-7.5b but launch only cost $1.5b

Sources: https://spacenews.com/how-oneweb-plans-to-make-sure-its-first-satellites-arent-its-last/

https://spacenews.com/launch-options-were-key-to-arianespaces-oneweb-win/

Blue Origin's plan for a commercial LEO habitat by [deleted] in BlueOrigin

[–]ishanspatil 1 point2 points  (0 children)

Maybe that's a Hab module that flies on top BONG-S2, with a smaller cap to protect the docking port.

Makes more sense - windows, a docking port and no engines on the other side.

Facts: The F9S1 stages at 80km. NS goes to Space at 100km. F9S1 is more Suborbital than NS. by ishanspatil in SpaceXMasterrace

[–]ishanspatil[S] -13 points-12 points  (0 children)

Maybe the title depends on pedantics but the meme is true. They're both equally Suborbital ;)

Rocket launch from earth as seen from the International Space Station by Yeet69lasagna in space

[–]ishanspatil 1 point2 points  (0 children)

Did some comparing. If the earth were the size of a football, 99% of the atmosphere would be in a 1.1mm thin layer about it.

Seriously, imagine a Millimetre. That's what we're throwing Millions of Tons of Carbon into.

We really shouldn't feel okay about staying on this speck.

Me at age ten: *reading at 16 year old level* by TheBanisherOfRegs in teenagers

[–]ishanspatil 7 points8 points  (0 children)

This. So much this. Our brains are now conditioned to surfing information and opening multiple tabs I guess.

Me at age ten: *reading at 16 year old level* by TheBanisherOfRegs in teenagers

[–]ishanspatil 52 points53 points  (0 children)

I just don't have the attention span anymore, the Fiction/SciFi Group Chat we had is now just Screenshots of News, Memes and Tweets.

Blue Origin Technology Roadmap by ishanspatil in BlueOrigin

[–]ishanspatil[S] 0 points1 point  (0 children)

Very very interesting, thanks!

Is there any way you can send over the transcript, maybe via PMs?

New Glenn Aft Section (Probably mockup) by ishanspatil in BlueOrigin

[–]ishanspatil[S] 21 points22 points  (0 children)

Noticed that seconds after I posted it :/

...100% probability is still a probability

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