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re: Picture of a space shuttle leaving Earth, taken by NASA

Posted on 4/7/16 at 7:45 pm to
Posted by roadkill
East Coast, FL
Member since Oct 2008
1861 posts
Posted on 4/7/16 at 7:45 pm to
quote:

I'm done with this argument


Sorry, dumbass - not your call when its over - here you go:
LINK

No, I wasn't USA - they didn't exist when Shuttle first flew (I guess your google search failed you again).

Don't try to lecture me on the 3 axes - I worked for the pre-eminent aerospace company in the world for >20 years - your argument on the roll program is a cut and paste of topics you don't understand at an entry level. All 3 axes determine the ascent profile but - again - the roll program is executed EXCLUSIVELY to allow gravity to feed the SSMEs.

quote:

Let me guess
- appears to be your only skill

Posted by meeple
Carcassonne
Member since May 2011
9450 posts
Posted on 4/7/16 at 8:19 pm to
So that particular image wasn't taken from a commercial aircraft like so many were from approx 30 miles away. What makes you think that FAA airspace restrictions didn't apply to an astronaut in a T-38 training aircraft? This proves nothing WRT your insistence that someone on a commercial aircraft cannot get a shot like this within around 30-40 miles of the pad.

quote:

No, I wasn't USA - they didn't exist when Shuttle first flew (I guess your google search failed you again).

Not Google. I happened to work with a bunch of those guys though.
quote:

Don't try to lecture me on the 3 axes - I worked for the pre-eminent aerospace company in the world for >20 years - your argument on the roll program is a cut and paste of topics you don't understand at an entry level. All 3 axes determine the ascent profile but - again - the roll program is executed EXCLUSIVELY to allow gravity to feed the SSMEs.

No, but I will argue points and back it up with data, something that engineers typically are used to doing. So you parrot back part of what we know that's true and present conclusions that are incorrect and not backed up with data while relying on your repeated condescending tone when you know nothing about me. Not that it would matter though, I could list off specific qualifications and it would make no difference to you.

This post was edited on 4/7/16 at 8:48 pm
Posted by Volvagia
Fort Worth
Member since Mar 2006
51949 posts
Posted on 4/8/16 at 1:11 am to
quote:

All 3 axes determine the ascent profile but - again - the roll program is executed EXCLUSIVELY to allow gravity to feed the SSMEs.


At best you are half right.


It wasn't to allow gravity to feed the mains.

Think that shite through, if you are as qualified and experienced as you keep going on about. What difference does gravity make as a primary driver of fluid flow on a vehicle that is experiencing 3 Gs along its thrust axis?

The roll may have had a component in factoring in the force vectors so that the pumps don't have to work incredibly hard to needlessly resist the force.

But to use words like gravity, exclusively, and to bypass the need for a fuel pump to describe this is just flat out wrong.

Speaking of....please why don't you educate us all as to why a turbo pump is some kind of completely separate thing from a fuel pump as opposed to just a type of fuel pump?

Edit: Nvm, I see someone else beat me to the punch.

Still pretty interested to see his response.
This post was edited on 4/8/16 at 1:18 am
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