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Ok, I love the lines of the Tartar, But in researching it, I came across the RIM-67 Standard. OOOOHHHH!!!! Pretty!!!
View attachment 247599
Photo by Lt. Raine (found on Wikipedia)
Anybody got a decent dimensional drawing of it?
I'm thinking that it'd be a good candidate for a 2.5-4" OD HPR build.
Thanks!
Jim
Probably easier to find if you call it "Standard Missile 1", "Standard Missile 2" or SM1, SM2. You will need to be careful, by design they are only very slightly dynamically stable. Those chines up the side bring the CP pretty far forward so the it can maneuver in the end-game.
I googled "SM-2 missile scale model" and came up with a nice article with everything you could possibly need. It is 9.8MB so I couldn't just attach it here.
"Chines"? Never heard them called that before.
They are also called dorsals. I have heard both pretty interchangeably over the years.
If you ask him yourself, the answer would be "Oh, I f@$%ed up!"Wilson, did anybody figure out why it did that?
As for the next OROC meeting, unless my Homework situation improves dramatically, I'll be tied up with it, and not be able to attend the meeting. I'm thinking that January is the next meeting I'll be able to attend.
They are also called dorsals. I have heard both pretty interchangeably over the years.
I have been building the AGM-78 Standard arm for years. The RIM-67 is the 2 stage version. Sather did a beautiful model a few years ago. I currently have a 7.5" in my fleet.
Try this https://www.varocketry.com/RIM-67 Drawings.htm
These missiles AREN'T DESIGNED to fly straight.
Wilson, did anybody figure out why it did that?
As for the next OROC meeting, unless my Homework situation improves dramatically, I'll be tied up with it, and not be able to attend the meeting. I'm thinking that January is the next meeting I'll be able to attend.
Cool - thanks for sharing.Fixed that for you. These are surface to air intercept missiles. They can turn at very high Gs in the last few seconds of flight in order to hit their target. They have an active guidance system that keeps them going the direction they intend. The high G manuevering requirements dictate that they have very small dynamic stability. RAM missiles are actually UNSTABLE at all times during flight and depend on the guidance system to keep them from shredding.
If the guidance system on an SM-2 fails such that the control fins are locked straight, the flights look pretty much just like that one. Do not build an exact scale model of this missile and assume it will be dynamically stable. It will not be unless you have incredible nose weight. Go 30% over on the control fins and 30% smaller on the dorsals.
You're exactly right! There was LOTS of amusing commentary after that launch, some of which included "Hey, it worked perfectly! I've seen those missiles fly before, and that's pretty much what they look like..."Looks like it locked onto a ground target immediately after liftoff...
Worked as intended! LOL Extra mission points!!!
Later! OL JR
Been talking to Fisher, I see?Well, the bad news for me is that I may have to return this to the back burner for a while.
The good news is that the reason that I might need to is that my commercial build may be coming to fruition, and I need the parts I intended for this to go back to their original purpose... Oh, and if all goes well, I get my Velociraptor.
Been talking to Fisher, I see?
I did a 4" RIM-24 Tartar a couple of years ago...OR file attached.
The old thread as well:
https://www.rocketryforum.com/showthread.php?31193-4-quot-RIM-24-Tartar/
Ok... My commercial build hasn't materialized, and I'm really wanting to build. I've got much of what I need to get started. However, I still can't read those dimensions from the drawings. My goal is to sim the rocket in OR at full scale, then use the scaling feature to reduce it to 3" OD, and then alter the nosecone to match the Leviathan's.
From what I can make out in the drawing below, it's a Standard Missile ER Type 1. I like it, and from what I can tell based on the info from the PDF that enderw88 linked to, it looks like the same missile. I'm not interested in building the booster, nor making it a two stage rocket at this time.
I realize that the station numbers are the length (in inches), but it's a little weird in the image. If I'm reading it correctly at STA 33.08, it's indicated that the nosecone is 6.51 diameter, but behind that is STA 28.30 (nose tangent), and ahead of it is 25.08 (which is the point of the nosecone). I can't find a STA 0 for me to base my .ork on.
Thanks!
Jim
Subtract 25.08 from every STA number and that will give a ZERO starting point at the nose cone...
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