N-1 builder kit from new manufacturer

Discussion in 'Mid Power Rocketry (MPR)' started by Nytrunner, Jan 16, 2018.

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  1. May 11, 2018 #121

    aerostadt

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    Kuririn, Daddy, You are right the parachute turned out to be the hardest part. I knew in advance that this was one of the biggest concerns, if not the biggest. The old crumpled mylar chute that I used was about 42" diameter. The kit comes with two 32" diameter chutes. To me they seem like heavy plastic and I was concerned that they might not fit into the parachute compartment. I see that Apogee sells some large mylar chutes. These are things that I will need to think out about after making repairs. Right now I don't know when I will do reconstruction work. I may wait until next winter. The obvious method of repair is to cut out the damaged section and put in a new section.
     
  2. May 11, 2018 #122

    jnobels

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    I’ve got a couple of scale launches planned for tomorrow that I’m mildly dreading.. I build them to fly them tho...

    On the bright side, the result you got is at least somewhat historically accurate....
     
  3. May 11, 2018 #123

    aerostadt

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    I get that a lot.:wink:
     
  4. May 12, 2018 #124

    kuririn

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  5. May 20, 2018 #125

    kuririn

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    Correction: Altaira has three new kits on Ebay. USS Starliner Enterprise, Friede, and a smaller version of the N1 with a 4x18mm cluster motor mount. I'm tempted.
     
  6. May 20, 2018 #126

    Zeus-cat

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    Matt showed up at the fly portion of a build and fly that I helped Randy (eRockets) with last week. Matt had his Friede with him. It wasn't prepped to fly, but he showed it to us. It looked pretty nice. And 12 D engines makes it a high power rocket.
     
  7. May 20, 2018 #127

    MaxQ

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    Sorry to hear that...did you get enough altitude, any where near expected?

    - set it aside as you mentioned...you simply must repair this and fly again.
    "4 out of 6 motors were ejected from the model" Motor retention needs a look at….?
     
    Last edited: May 20, 2018
  8. May 20, 2018 #128

    aerostadt

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    Yes, agreed. To me the altitude looked good. I did go back and build the parachutes that were supplied in the Altaira kit. After assembling the chutes they did not look that bad. I may have been better off using those chutes. Perhaps, one chute for the nose cone and one chute for the main body. There are a few things here to think about.
     
  9. May 21, 2018 #129

    NJRick

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    sorry I missed this thread....amazing build!! sorry about the landing though....still just awesome work!!
     
  10. Oct 9, 2018 #130

    aerostadt

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    I'm starting to repair the N-1 first stage, where the damage was the greatest. I cut the shrouds either with a Dremel tool or an xacto knife, probably mostly with the Dremel tool, because the CA soaked paper shroud was just to tough to cut with the knife. I cut one shroud along the center of the fuel cowling that I took off. I will be replacing the shroud under 3 cowlings. I decided to cut a little bit past the other cowling.
     

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  11. Oct 10, 2018 #131

    Andrew_ASC

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    I think you would have success with packing a top flight thin mill nylon chute. I was able to get a 12” TFR thin mill into a 24mm MD in less than an inch and half of length. They pack very small for size. Of course use the larger size for the n-1.
     
  12. Oct 30, 2018 #132

    aerostadt

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    I put in some ribs as scaffolding using heavy card stock. Then I put on some shroud sections using lighter card stock.
     

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  13. Oct 30, 2018 #133

    Ez2cDave

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    NOTE : Using SIX Estes D12 BP motors will put you over the 125gr maximum propellant weight for Model Rockets ( 5 BP D12's are the maximum for a Model Rocket ). It would be considered an HPR rocket, legally-speaking, with 6 D12's.

    Dave F.
     
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  14. Oct 30, 2018 #134

    aerostadt

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    That's good to know. I always launch at a Club launch, which has a FAA waiver. Our Club launch is also out in a desert-like area with lots of open space, which is probably good for a complicated model like this one.
     
  15. Oct 30, 2018 #135

    Ez2cDave

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    ALSO, in order to FLY that "HPR" rocket, legally, you would need to be Certified Level 1, or higher.
     
  16. Nov 1, 2018 #136

    aerostadt

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    Fortunately, the kit came with a lot of extra parts and I held on to them. I ordered some extra inter-stage struts. Hopefully, they will be enough.
     

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  17. Nov 7, 2018 #137

    aerostadt

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    I don't think the model needs a Level 1. The D12-5 has 17 N-sec and there are 6 of them for a total of 102 N-s. This puts the model in the G motor range, which is 80 to 160 N-s. Level 1 is required to launch an H or I motor.
     
  18. Nov 7, 2018 #138

    Zeus-cat

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    The propellant weight puts into high power. If the propellant is more than 125 grams you need to be L1 certified. A D12 has 21.1 grams of propellant, so 6 would be 126.6 grams; just over the limit.
     
  19. Nov 8, 2018 #139

    aerostadt

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    OK, I see this on the NAR website. So, the N-1 with six D12's is 1.6 grams over the limit on propellant weight putting it in the Level 1 category. Interesting.
     
  20. Nov 8, 2018 #140

    Jmhepworth

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    Good thing you’re an L3, Bob.
     
  21. Nov 8, 2018 #141

    aerostadt

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    Joe, actually, I'm only an L2. However, that is enough for this N-1 model. I made some more progress today. Using mostly a Dremel tool, I cut a way the broken struts on the lowest inter-stage and glued on strut replacements with CA. I need to put on two first stage grid fins and some second stage strut replacements. I will need to look at the escape tower and Soyuz capsule and decide on parachutes, but that will be it. We can re-build it, but it won't look quite as good as the first time. (Just ignore the underlying mess on the workbench in the photo's. It is only getting worse.)
     

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  22. Nov 8, 2018 #142

    Nytrunner

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    Thanks for keeping this updated Aero!

    To be fair, the original N-1s looked significantly worse after their initial flight incidents
     
  23. Jul 11, 2019 at 11:20 PM #143

    aerostadt

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    I am planning a 1/125th scale Saturn V to go along with the N-1. My Saturn V will not be as fancy as many of those on TRF. The plan is to have something basic for comparison. I ordered two parts from bumper1b, who has them programmed for 3D printing with ShapeWays. Two of the parts, the aft skirt and 1st stage/2nd stage transition, have come in. The fins are located on a tree in the aft skirt and need to be cut out.
     

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  24. Jul 11, 2019 at 11:24 PM #144

    kuririn

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    So I take it the N1 has been rebuilt? N1/Sat V drag race?
     
  25. Jul 11, 2019 at 11:44 PM #145

    aerostadt

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    Yes, kuririn, the plan is a N1/Sat V drag race. However, I am starting on the Sat V build very late and I don't know when it will be done. Surely, it won't be done for this month's festivities.
     

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