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lb
1st lieutenant (ستوان یكم)
Nice one .. this thing is really big !

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ir
Lieutenant colonel (سرهنگ دوم)
thanks the8march, interesting Image. It reminded me to Sejil missile, like Sejil actuator boxes of jet vanes have been installed on outer surface of body of missile that i think it is due to large diameter of nozzle of engine compared to diameter of body unlike Shahab-3/Ghadr missile:

Ghadr-F missile:


Sejjil:




Unha-3:

[attach=1]

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By considering the jet vanes of Unha-3 is it possible to conclude first stage just uses one engine and one nozzle? or I'm wrong. because I think the jet vanes should be located around the nozzles so If four jet vanes have been located around outer diameter of body of Unha-3 so it means has just one nozzle and engine.
Is my assumption true or I'm wrong and even in rockets with multiple nozzles, the jet vanes are lcoated and installed just on outer diameter of body too?
Last Edit: April 11, 2012, 10:05:31 AM by M-ATF

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lb
1st lieutenant (ستوان یكم)
I dont think that using only 4 vanes means that the missile has a single engine... every vane could control one engine from the 4 to steer the missile..

But this is just an opinion

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ir
Lieutenant colonel (سرهنگ دوم)
I dont think that using only 4 vanes means that the missile has a single engine... every vane could control one engine from the 4 to steer the missile..

But this is just an opinion

I think youre right, using four vane for each nozzle increases cost and makes control of them more complicated.

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1st lieutenant (ستوان یكم)
I think youre right, using four vane for each nozzle increases cost and makes control of them more complicated.
Would be also interesting to find out if the actuator boxes have the same size... The boxes look much pretty similar..

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en
Lieutenant colonel (سرهنگ دوم)
This missile is massive...compare it to the russian ones which have much bigger range and are much smaller.
why is that?

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moores law driving force of innovation
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ir
Lieutenant colonel (سرهنگ دوم)
the fuel and material.
Iran Khodro largest auto maker in larger middle east

http://www.youtube.com/watch?v=DWwHIPoQdw8&list=UUMF4vfECnuAPAfW0s6lMpyg&index=1&feature=plcp

<a href="http://www.quickiqtest.net" title="IQ Test"><img src="http://www.quickiqtest.net/graphic/badges/sf114.gif" width="150" height="75" alt="IQ Test" border="0"></a><br>QuickIQTest.net - <a title="Quick IQ Test" href="http://www.quickiqtest.net">IQ Test</a>

this is the fixed video.
http://www.youtube.com/watch?v=bn-T-5k0_4E&list=UUMF4vfECnuAPAfW0s6lMpyg&index=1

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Posts: 2493
كونا للظالم خصماً وللمظلوم عوناً
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lb
1st lieutenant (ستوان یكم)
This missile is massive...compare it to the russian ones which have much bigger range and are much smaller.
why is that?


which Russian missile do you mean? they have many missiles.

This is what they use for their space missions:

Last Edit: April 11, 2012, 02:21:54 PM by the8march

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Freeloader (اش خور)
four vanes in Russian  rocket:

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np
S.M. Sergeant (استوار دوم)
the fuel and material.

Ary, seriously nice to have you back dude. I started to get worried.
You are once again threatened my beloved homeland,
I shall defend you until the last breath,
We embrace death if that's what it takes to save you, we have lived by Bushido code all along.

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كونا للظالم خصماً وللمظلوم عوناً
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lb
1st lieutenant (ستوان یكم)
four vanes in Russian  rocket:

I tried to find something like this.. thanks .. which rocket is this?

Edit: Seems to be used also on the R-12 missile
Last Edit: April 11, 2012, 08:21:01 PM by the8march

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ir
Major (سرگرد)
I hate to be in the place of the program managers and engineers responsible for the launch considering the very intense public coverage and the possibility of failure. Frankly I'm surprised they have proceeded with this publicly considering the reported failures of theiur recent attempted launches of simpler rockets.  This does give some credence to the erratic nature of their space program that is reported by the media.  But I can't say for sure.

Regardless, I wish them well.

Mamdali
(Note:  I hope I'm being redundant by saying that given the state of misinformation and factless and unsupported content that is rife on the 'internet' today, naturally, I cannot endorse, believe, support, or accept any of links posted by me or others.  I personally find them interesting, however, as they open new perspectives for me.  I leave it to the reader to glean what they can or want from them).

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