Soyuz 1/25... why not ?

Discussion in 'Scale' started by PieroAcme, Dec 18, 2019.

Help Support The Rocketry Forum by donating:

  1. Jan 9, 2020 #31

    PieroAcme

    PieroAcme

    PieroAcme

    Well-Known Member

    Joined:
    Feb 14, 2017
    Messages:
    61
    Likes Received:
    30
    Happy new year to all RocketryForum members!
    And now.. back to Soyuz building.
    It is time to put together the pieces. Here the fin assembly

    FinSoyuSmall.jpg

    Here the picture of fin alignment tool. I saw this tool in one of the video made by George (Air Command Water Rockets) and immediately I made a copy. It is very easy to build cheap.. and it works perfect!
    It is made with aluminum profiles L shape you easily find in the hardware stores.

    In the picture it is also well visible the central core tube. As written in previous post the space between external and internal tube is then filled with foam.

    Here one of the shroud. You see the centering rings and some reinforcement made with some wood sticks.
    The inner surface has also a layer of epoxy to give a better stiffness and avoid that foam pressure makes deformation.
    ShroudSoyuSmall.jpg
     
  2. Jan 11, 2020 #32

    PieroAcme

    PieroAcme

    PieroAcme

    Well-Known Member

    Joined:
    Feb 14, 2017
    Messages:
    61
    Likes Received:
    30
    Here you see the assembly of the first shroud. Rail buttons and boosters holding points are in position too. Centering ring has holes to allow the introduction of the foam. CIMG0556.JPG
     
    Last edited: Jan 11, 2020
  3. Jan 11, 2020 #33

    PieroAcme

    PieroAcme

    PieroAcme

    Well-Known Member

    Joined:
    Feb 14, 2017
    Messages:
    61
    Likes Received:
    30
    Here the full body assembled. Centering rings of Souyz upper stage are assembled. To have an easy transportation and storage, I designed the upper stage with the possibility to be dismounted.
    CIMG0566.JPG
     
  4. Jan 11, 2020 #34

    PieroAcme

    PieroAcme

    PieroAcme

    Well-Known Member

    Joined:
    Feb 14, 2017
    Messages:
    61
    Likes Received:
    30
    With this scale some details that in smaller dimension could be skipped here are a must. If you closely look the surface the panels joins are visible as well othe structural reinforcements.
    Soyuz_detail.jpg

    To do that I apply the technique of maching thin paper lines attached on the surface.
     
  5. Jan 11, 2020 #35

    PieroAcme

    PieroAcme

    PieroAcme

    Well-Known Member

    Joined:
    Feb 14, 2017
    Messages:
    61
    Likes Received:
    30
    Here you see the boosters at 3 different level of detail finishing
    The first has only the lines marked with a pencil, the second has the paper lines attached and the third the small wood details that in the real one are the connection point for various rocket systems CIMG0628ridotta.jpg
    Here with a better sharp light the final effect

    CIMG0627.JPG
     
    GlenP, Mugs914, Rktman and 4 others like this.
  6. Jan 14, 2020 #36

    Ez2cDave

    Ez2cDave

    Ez2cDave

    Well-Known Member

    Joined:
    Jan 18, 2009
    Messages:
    2,964
    Likes Received:
    660
    Wow . . . Excellent details . . . Beautiful job !

    Dave F.
     
    AfterBurners likes this.
  7. Jan 14, 2020 #37

    AfterBurners

    AfterBurners

    AfterBurners

    Well-Known Member

    Joined:
    May 8, 2012
    Messages:
    7,032
    Likes Received:
    160
    Gender:
    Male
    Location:
    Dallas Texas
    I agree excellent work!!!
     
  8. Jan 14, 2020 #38

    PieroAcme

    PieroAcme

    PieroAcme

    Well-Known Member

    Joined:
    Feb 14, 2017
    Messages:
    61
    Likes Received:
    30
    Hi After and Ez2! Thanks for supporting :)

    Here a bit of discussion for another "new" at least for me solution to manage staging
    Here a sketch of the staging and boosters detachment system. Soyuz2Staging.jpg
    The holding points of the boosters are the nose cone tip and the step on the fins. Everything kept in position by the stop at the base of the 1st stage.
    As wrote before the system works with the principle of Estes staging. But here the mass are different. On a light rocket you can count on interference and friction. Here the boosters weight with engines is in the range of 1Kg. Pure friction holding is difficult to manage and I want avoid mechanical systems. It must be very very simple so... Russian stile!
    To do that, I decided to use a magnetic shear pin concept. Nowadays it is quite easy to find small magnets with a strong force on the internet shops. These look like a button and the diameter size is around 5mm.
    The nice characteristic is that the force to detach is easy to measure and is absolutely constant.
    So I left a minimum interference and I placed 3 couples of them in the interface upper stage and booster.
    To be honest the result is very promising. It keep the booster in position and to detach you need 1,2 Kg precisely.
    When 1st stage ends the thrust phase a D9-0 light the upper stage. The room between the two stages will get pressurized and will detach the 1st stage and so the boosters are released.
    In this case magnetic share pins is a technique quite new for me, so if someone used already magnetic shear pins... please let me know the results.
    Here below in green the position of the magnetic pins.

    MagClamSy2.jpg
     
    Last edited: Jan 14, 2020
    mbeels and Cape Byron like this.
  9. Jan 14, 2020 #39

    PieroAcme

    PieroAcme

    PieroAcme

    Well-Known Member

    Joined:
    Feb 14, 2017
    Messages:
    61
    Likes Received:
    30
  10. Jan 15, 2020 #40

    Bruiser

    Bruiser

    Bruiser

    Well-Known Member

    Joined:
    Jun 7, 2018
    Messages:
    831
    Likes Received:
    172
    That is some excellent work!

    -Bob
     
  11. Jan 17, 2020 #41

    PieroAcme

    PieroAcme

    PieroAcme

    Well-Known Member

    Joined:
    Feb 14, 2017
    Messages:
    61
    Likes Received:
    30
    Here the work continues with nose cone and escape tower. You see that escape tower is made with Bt tubes and nose cone is just the external skin.
    This is to allow the fill with the necessary balancing weight. Here is the optimum position to minimize the final total weight of the rocket.I use led shots mixed with epoxy.

    NoseConeSyz1.png


    NoseconeSyz.jpg
     
  12. Jan 19, 2020 #42

    PieroAcme

    PieroAcme

    PieroAcme

    Well-Known Member

    Joined:
    Feb 14, 2017
    Messages:
    61
    Likes Received:
    30
    Some work on details

    Soyuz grid fins

    CIMG0730.JPG
    CIMG0731.JPG
     
  13. Jan 19, 2020 #43

    PieroAcme

    PieroAcme

    PieroAcme

    Well-Known Member

    Joined:
    Feb 14, 2017
    Messages:
    61
    Likes Received:
    30
    and vernier thrusters

    turning
    CIMG0741.JPG

    Pre-assembly

    CIMG0746.JPG
     
  14. Jan 19, 2020 #44

    PieroAcme

    PieroAcme

    PieroAcme

    Well-Known Member

    Joined:
    Feb 14, 2017
    Messages:
    61
    Likes Received:
    30
    Here the engine clusters.

    CIMG0735.JPG

    In this case the pieces will have an aesthetic and technical function.
    These work like engines retainer. The central hole is made to place a screw that keeep them in position.

    Here a sketch to explain the concept

    Syz2engineretainer.jpg
    It will easy for them to be burned. Ignition system will have flames that will touch them.So it is good to have easy replacement.
     
  15. Jan 19, 2020 #45

    Crawf56

    Crawf56

    Crawf56

    Pig Soooiiieee!! TRF Supporter

    Joined:
    Aug 16, 2016
    Messages:
    1,156
    Likes Received:
    148
    Gender:
    Male
    Location:
    Paragould, AR
    Ochen horrasho, tovareesh! ["Very good, comrade!"]
     
    PieroAcme likes this.
  16. Jan 19, 2020 #46

    Ez2cDave

    Ez2cDave

    Ez2cDave

    Well-Known Member

    Joined:
    Jan 18, 2009
    Messages:
    2,964
    Likes Received:
    660
    Это отличная модель в масштабе ! ( Eto otlichnaya model' v masshtabe ! ) This is a great scale model !

    Dave F.
     
    PieroAcme likes this.
  17. Jan 19, 2020 #47

    PieroAcme

    PieroAcme

    PieroAcme

    Well-Known Member

    Joined:
    Feb 14, 2017
    Messages:
    61
    Likes Received:
    30
    Привет, товарищи! Я вижу, что русский здесь не проблема :)
     
  18. Jan 19, 2020 #48

    mbeels

    mbeels

    mbeels

    Putting the tree in rocketry TRF Supporter

    Joined:
    Feb 9, 2019
    Messages:
    1,307
    Likes Received:
    506
    Gender:
    Male
    Wow, truly incredible. What is the grid fin material? Did you make that as well?
     
  19. Jan 19, 2020 #49

    Ez2cDave

    Ez2cDave

    Ez2cDave

    Well-Known Member

    Joined:
    Jan 18, 2009
    Messages:
    2,964
    Likes Received:
    660
    С помощью Google Translate мы можем сделать что угодно! ( With Google Translate, we can do anything ! )

    Dave F.
     
  20. Jan 19, 2020 #50

    Tom Hoelle

    Tom Hoelle

    Tom Hoelle

    Member

    Joined:
    Nov 18, 2018
    Messages:
    7
    Likes Received:
    0
    Gender:
    Male
    I'm really impressed with your level of detail that you're putting into the Soyuz. I've started working on a Vostok and I played with a few options on how to attach the 4 side boosters. I want them to eject from the second stage. At this point I'm planning on using a pair of small brass tubes + wooden pins to keep the bottom of the booster attached with just one set of brass tube + wooden pin mounted to the nose. The idea is the ejection charge will remove the booster from the second stage.

    In your Jan 11 post, you mentioned that you used thin paper lines attached on the surface of the boosters. To make sure I understand, you 1) marked lines on the booster to know what to align on and 2) attach the paper lines. What do you use to glue them into place? I was thinking of using 1/100" sheet plastic and scribe the lines which would show thru on the other side. This looks like a better way.
     
  21. Jan 19, 2020 #51

    Tom Hoelle

    Tom Hoelle

    Tom Hoelle

    Member

    Joined:
    Nov 18, 2018
    Messages:
    7
    Likes Received:
    0
    Gender:
    Male
    I'm really impressed with your level of detail that you're putting into the Soyuz. I've started working on a Vostok and I played with a few options on how to attach the 4 side boosters. I want them to eject from the second stage. At this point I'm planning on using a pair of small brass tubes + wooden pins to keep the bottom of the booster attached with just one set of brass tube + wooden pin mounted to the nose. The idea is the ejection charge will remove the booster from the second stage.

    In your Jan 11 post, you mentioned that you used thin paper lines attached on the surface of the boosters. To make sure I understand, you 1) marked lines on the booster to know what to align on and 2) attach the paper lines. What do you use to glue them into place? I was thinking of using 1/100" sheet plastic and scribe the lines which would show thru on the other side. This looks like a better way.
     
  22. Jan 19, 2020 #52

    Tom Hoelle

    Tom Hoelle

    Tom Hoelle

    Member

    Joined:
    Nov 18, 2018
    Messages:
    7
    Likes Received:
    0
    Gender:
    Male
    I'm really impressed with your level of detail that you're putting into the Soyuz. I've started working on a Vostok and I played with a few options on how to attach the 4 side boosters. I want them to eject from the second stage. At this point I'm planning on using a pair of small brass tubes + wooden pins to keep the bottom of the booster attached with just one set of brass tube + wooden pin mounted to the nose. The idea is the ejection charge will remove the booster from the second stage.

    In your Jan 11 post, you mentioned that you used thin paper lines attached on the surface of the boosters. To make sure I understand, you 1) marked lines on the booster to know what to align on and 2) attach the paper lines. What do you use to glue them into place? I was thinking of using 1/100" sheet plastic and scribe the lines which would show thru on the other side. This looks like a better way.
     
  23. Jan 19, 2020 #53

    Tom Hoelle

    Tom Hoelle

    Tom Hoelle

    Member

    Joined:
    Nov 18, 2018
    Messages:
    7
    Likes Received:
    0
    Gender:
    Male
    I'm really impressed with your level of detail that you're putting into the Soyuz. I've started working on a Vostok and I played with a few options on how to attach the 4 side boosters. I want them to eject from the second stage. At this point I'm planning on using a pair of small brass tubes + wooden pins to keep the bottom of the booster attached with just one set of brass tube + wooden pin mounted to the nose. The idea is the ejection charge will remove the booster from the second stage and pull the nose cone out.

    In your Jan 11 post, you mentioned that you used thin paper lines attached on the surface of the boosters. To make sure I understand, you 1) marked lines on the booster to know what to align on and 2) attach the paper lines. What do you use to glue them into place? I was thinking of using 1/100" sheet plastic and scribe the lines which would show thru on the other side. This looks like a better way.
     
  24. Jan 20, 2020 #54

    Tom Hoelle

    Tom Hoelle

    Tom Hoelle

    Member

    Joined:
    Nov 18, 2018
    Messages:
    7
    Likes Received:
    0
    Gender:
    Male
    I'm really impressed with your level of detail that you're putting into the Soyuz. I've started working on a Vostok and I played with a few options on how to attach the 4 side boosters. I want them to eject from the second stage. At this point I'm planning on using a pair of small brass tubes + wooden pins to keep the bottom of the booster attached with just one set of brass tube + wooden pin mounted to the nose. The idea is the ejection charge will remove the booster from the second stage and pull the nose cone out.

    In your Jan 11 post, you mentioned that you used thin paper lines attached on the surface of the boosters. To make sure I understand, you 1) marked lines on the booster to know what to align on and 2) attach the paper lines. What do you use to glue them into place? I was thinking of using 1/100" sheet plastic and scribe the lines which would show thru on the other side. This looks like a better way.
     
  25. Jan 20, 2020 #55

    Ez2cDave

    Ez2cDave

    Ez2cDave

    Well-Known Member

    Joined:
    Jan 18, 2009
    Messages:
    2,964
    Likes Received:
    660
    Last edited: Jan 20, 2020
  26. Jan 20, 2020 #56

    PieroAcme

    PieroAcme

    PieroAcme

    Well-Known Member

    Joined:
    Feb 14, 2017
    Messages:
    61
    Likes Received:
    30
    Hi Mbeels!, the grids are made using some stuff used in ship scale model. Here below a picture shows how it looks when you buy.
    These are made with wood, but you find in plastic too.
    2544Paiolato.jpg
     
    mbeels likes this.
  27. Jan 20, 2020 #57

    PieroAcme

    PieroAcme

    PieroAcme

    Well-Known Member

    Joined:
    Feb 14, 2017
    Messages:
    61
    Likes Received:
    30
     
    Last edited: Jan 20, 2020
  28. Jan 20, 2020 #58

    Ez2cDave

    Ez2cDave

    Ez2cDave

    Well-Known Member

    Joined:
    Jan 18, 2009
    Messages:
    2,964
    Likes Received:
    660
    PA140103.jpg
     
    PieroAcme likes this.
  29. Jan 20, 2020 #59

    PieroAcme

    PieroAcme

    PieroAcme

    Well-Known Member

    Joined:
    Feb 14, 2017
    Messages:
    61
    Likes Received:
    30
    Here the set of pieces , boosters and upper stage is ready for painting. Syzpieces.jpg

    Here a detail of the upper stage

    syz2upper.jpg
     
  30. Jan 20, 2020 #60

    PieroAcme

    PieroAcme

    PieroAcme

    Well-Known Member

    Joined:
    Feb 14, 2017
    Messages:
    61
    Likes Received:
    30
    Hi EZ2, this you posted is an exceptional model.
    The level of detail is amazing.
    ... I'll keep some levels below.. ;-)
     

Share This Page

Group Builder