Project Atlas A ICBM: America's First

[Star Voyager]

I believe they serve the same purpose, but I could be wrong. The pitot tube has to do with controlled air pressure to determine airspedd and similar instruments. I'm only a student pilot, though, not an expert.

 

[MJR]

More to know. Thanks.

 

[Urwumpe]

I believe they serve the same purpose, but I could be wrong. The pitot tube has to do with controlled air pressure to determine airspedd and similar instruments. I'm only a student pilot, though, not an expert.

All pitot tubes work the same, regardless if they are on rockets, planes or even on ships (that was the initial application of pitot tubes).

You measure static pressure, (multiple) dynamic pressure(s) and temperature and from that you can calculate all the data you need. The Atlas A pitot tube likely measured equivalent airspeed, Mach number, angle of attack&sideslip, pressure altitude and temperature - like all standard pitot tubes today and that was already state of the art in test plane equipment then.

 

[MJR]

I added the antenna. Urwumpe, does the inside look like the Atlas F interior or does it look different? If so, do you have any pictures?

 

[Star Voyager]

Mr. MJR, the mesh is coming along nicely. Great work ! For Mr. Urwumpe, thanks for the info. I don't think I was too off.

 

[Urwumpe]

I added the antenna. Urwumpe, does the inside look like the Atlas F interior or does it look different? If so, do you have any pictures?

Assume it looks completely different. Or what do you mean with the interior?

It has the same balloon tanks, similar umbilical connections and similar dimensions as the Atlas D. The booster structures also seems to be similar to the Atlas D. It has Atlas D like electronics compartments, but as it used the LR89-1 engines without sustainer, completely different plumbing inside.

The LR89-1 engines shared a common turbopump, and thus had only a single LOX duct on the outside. The Atlas D, E and F had the LR89-5 engines for the booster, which had been more powerful, had their own turbopumps and had two independent LOX ducts on the outside.

See here for a photo: http://www.siloworld.com/MISSILE%20%20LAUNCHES/CAPE/Launches/atlas.htm
And more: http://www.siloworld.com/MISSILE LAUNCHES/CAPE/Launches/atlas__a.htm

The third picture on the second page already shows great the single LOX duct.

(Correction: The Atlas D still had the single LOX duct. But E and F had two LOX ducts)

 

[MJR]

Assume it looks completely different. Or what do you mean with the interior?

It has the same balloon tanks, similar umbilical connections and similar dimensions as the Atlas D. The booster structures also seems to be similar to the Atlas D. It has Atlas D like electronics compartments, but as it used the LR89-1 engines without sustainer, completely different plumbing inside.

The LR89-1 engines shared a common turbopump, and thus had only a single LOX duct on the outside. The Atlas D, E and F had the LR89-5 engines for the booster, which had been more powerful, had their own turbopumps and had two independent LOX ducts on the outside.

See here for a photo: http://www.siloworld.com/MISSILE LAUNCHES/CAPE/Launches/atlas.htm
And more: http://www.siloworld.com/MISSILE LAUNCHES/CAPE/Launches/atlas__a.htm

What I meant for the interior was basically what the inside of the Atlas A looked like.

 

[Urwumpe]

What I meant for the interior was basically what the inside of the Atlas A looked like.

Look at the drawings of the Atlas-Centaur I had posted somewhere...

This one has a different LOX tank shape for carrying the centaur stage, but the general features are the same

http://www.ninfinger.org/models/vault/Atlas%20and%20Centaur%20Stuff/Atlas%20Tankage-Full-Low.JPG

balloon tanks, structural integrity is kept by internal pressure, double walled common bulkhead between fuel tank and LOX tank.

The LOX tank has anti-slosh baffles and hanging slosh dampers on the wall, the fuel tank is much simpler.

 

[MJR]

Thanks.

 

[Star Voyager]

I might have found a way to eliminate the engine problem. Replace thrust, burn time with 0 and delete eng_1=(0,0,-9.0). Doyou think that is possible?

 

[MJR]

I actually don't think that the A has the main engine. Does it? If not then yes I can delete it.

 

[Star Voyager]

No, I don't think it does. That be the case, It's just one big rocket.

 

[MJR]

Can you check on that real quick? I am making the internal stage.

 

[Star Voyager]

Here is a picture:

It only has two engines, which are attached to the booster. Therefore, it did not separate (if it did, there was no reason for it).

 

[MJR]

Cool. I'll just remove the main engine core and make the booster not separate.

---------- Post added at 02:00 PM ---------- Previous post was at 01:58 PM ----------

BTW, is it worth it to make Firefox my default internet browser?

 

[Star Voyager]

That sounds great! I tried modifying the .ini, but didn't work too well.

 

[MJR]

What happened?

 

[Star Voyager]

The guidance didn't work and there were exhaust textures where there shouldn't be exhaust textures.

 

[MJR]

I'll fix that in a second.

 

[Star Voyager]

Thank you, I will look forward to seeing it.