Viking 7 Sounding Rocket.

Discussion in 'Plans' started by gna, Oct 14, 2015.

Help Support The Rocketry Forum by donating:

  1. Oct 14, 2015 #1

    gna

    gna

    gna

    Well-Known Member

    Joined:
    Sep 10, 2014
    Messages:
    248
    Likes Received:
    0
    While reading about the early days of the V2 at White Sands, I learned about the Viking Rockets. I especially like the elegant looks of the early Vikings, so I've decided to build one. I have a big piece of BT-55 left over from a different project, and stumbled on a bunch of balsa nosecones in the clearance box at my local hobby shop.

    The early Viking rockets were very narrow, only 32" in diameter:

    [​IMG]

    So if I divide that by 1.33" (BT-55 size), I get 24.060, so close enough to 1/24 scale. By happy accident, that is also the scale of the Estes V2 kit, so it would be possible to have a White Sands stable. The later Vikings scale out somewhere between 1/33 and 1/34 scale in BT-55 tubing.

    While looking for info, I stumbled across this site: http://www.nielspapermodels.com/vik7.htm , which builds into a 1/96 scale rocket, so enlarging by 4 times should help me scale my rocket out.
    I also found http://www.postwarv2.com/viking/viking.html, which has a many pictures as well as some larger models.

    I developed an Open Rocket file on the Viking 7:

    It looks good, but I'm thinking I'll cut the fin tabs separately and glue them so they don't break off.

    View attachment viking 7 Sounding Rocket.ork
     
  2. Oct 14, 2015 #2

    tab28682

    tab28682

    tab28682

    Well-Known Member

    Joined:
    Jul 30, 2014
    Messages:
    1,467
    Likes Received:
    0
    I have always liked the Viking 7 series. Did some sketches for a Viking 7 at 5.5" in diameter a long time ago. Recently picked up the Rocketarium Viking 7 kit as well. The Rocketarium kit is 1.64"/BT-60 in diameter.

    That paper model of the Viking 7 is quite nice and I downloaded it a while back.

    I also recommend the book "The Viking Story" by M. W. Rosen, if you can find a copy of it. Old and pretty rare these days.
     
    Last edited: Oct 14, 2015
  3. Oct 14, 2015 #3

    aerostadt

    aerostadt

    aerostadt

    Lifetime Supporter TRF Lifetime Supporter

    Joined:
    Oct 27, 2009
    Messages:
    2,527
    Likes Received:
    21
    Gender:
    Male
    Location:
    Brigham City, UT
    I always liked the design of the Viking with the triangular fins. In the 1950's there were a lot of movie clips on TV showing this rocket taking off. At LDRS 17 a UROC member, Fred Williams, used a Viking scale model for his L2 certification. I think it was a hybrid motor.

    Viking 2 LDRS 17.jpg
     
  4. Oct 14, 2015 #4

    gna

    gna

    gna

    Well-Known Member

    Joined:
    Sep 10, 2014
    Messages:
    248
    Likes Received:
    0
    Aren't those paper models great? And he has many of them, including Viking and Vanguard models.

    I found a sample of it on-line while I was Googling. Looks like a good read. Unfortunately, my library doesn't have it, it's out of print, and not cheap used. I'll keep looking, though.
     
  5. Oct 14, 2015 #5

    gna

    gna

    gna

    Well-Known Member

    Joined:
    Sep 10, 2014
    Messages:
    248
    Likes Received:
    0
    The other nose cone I found is conical; I'm working on the triangular fin design, too. I'll post it when I get it done. The nose cone I found is a bit long, though.
     
  6. Oct 14, 2015 #6

    cvanc

    cvanc

    cvanc

    Well-Known Member

    Joined:
    Jul 24, 2012
    Messages:
    1,236
    Likes Received:
    5
    Hey, thanks for posting this! I've always been interested in the Viking. Very interesting links too.
     
  7. Oct 15, 2015 #7

    gna

    gna

    gna

    Well-Known Member

    Joined:
    Sep 10, 2014
    Messages:
    248
    Likes Received:
    0
    I found a few more items of interest:

    Here's a plan by G. Harry Stine for what looks like a BT-20 sized Viking. He includes the conduits, which I didn't bother with, mostly because I couldn't figure how to model them in Open Rocket:

    View attachment VIKING_106.pdf

    I tried to draw up a plan for the later, pointy finned Vikings:

    View attachment Viking 9.ork

    I don't know if that nosecone is available, though. To build in the same 1/24 scale it would need to be about 1.875", and I don't think there's a body tube that size.

    The nosecone I have is 5.5" long, which isn't right for the Vikings, per se, but it is close to Viking 13, which was better know as Vanguard TV-0:

    View attachment Vanguard TV-0.ork

    I also thought it would be possible to buy a Partizon from Estes, cut new fins, and shorten a body tube and make a 2.5" Viking:

    View attachment Estes Partizon(2)viking.ork
     
  8. Oct 20, 2015 #8

    gna

    gna

    gna

    Well-Known Member

    Joined:
    Sep 10, 2014
    Messages:
    248
    Likes Received:
    0


    Looks like the thrust is gimballed.

    Here's video of Viking 4, launched from the USS Norton Sound on 11 May 1950. I have no idea what the hell this video is going on about:

     
    Last edited: Oct 25, 2015
  9. Oct 21, 2015 #9

    Leo

    Leo

    Leo

    Well-Known Member

    Joined:
    Aug 19, 2009
    Messages:
    1,685
    Likes Received:
    27
    Some footage at 0:30 sec and beyond:


    and here at 8:00 min and beyond:
     
  10. Oct 22, 2015 #10

    Leo

    Leo

    Leo

    Well-Known Member

    Joined:
    Aug 19, 2009
    Messages:
    1,685
    Likes Received:
    27
    short segment at 10:20 min:
     
  11. Oct 24, 2015 #11

    Leo

    Leo

    Leo

    Well-Known Member

    Joined:
    Aug 19, 2009
    Messages:
    1,685
    Likes Received:
    27
    Launch at 8:14 min and some footage afterwards:
     
    Last edited: Oct 24, 2015
  12. Oct 25, 2015 #12

    gna

    gna

    gna

    Well-Known Member

    Joined:
    Sep 10, 2014
    Messages:
    248
    Likes Received:
    0
    Last edited: Oct 25, 2015
  13. Dec 30, 2018 #13

    Leo

    Leo

    Leo

    Well-Known Member

    Joined:
    Aug 19, 2009
    Messages:
    1,685
    Likes Received:
    27
    I finished designing and 3D printing parts (BT-55) of the Viking 10.
    [​IMG]
    [​IMG]
    The nose cone was a bit of a challenge as it isn't just a normal conical shape. Looking at the pictures it seems to have a bulge which I tried to get into the design as accurate as possible.

    Only thing I need to do is make a conduit going from the nose cone to the fin unit.
     
    Last edited: Dec 30, 2018
    BigRiJoe likes this.
  14. Dec 30, 2018 #14

    Leo

    Leo

    Leo

    Well-Known Member

    Joined:
    Aug 19, 2009
    Messages:
    1,685
    Likes Received:
    27
    Some more footage of #10
     
  15. Jan 2, 2019 #15

    blackjack2564

    blackjack2564

    blackjack2564

    Crazy Jim's Gone Banana's

    Joined:
    Jan 18, 2009
    Messages:
    8,354
    Likes Received:
    457
    Location:
    Savannah Ga
    Nice work on the printing Leo.
     
    Leo likes this.
  16. Jan 4, 2019 #16

    Ez2cDave

    Ez2cDave

    Ez2cDave

    Well-Known Member

    Joined:
    Jan 18, 2009
    Messages:
    599
    Likes Received:
    105
    Enjoy . . .

    Trigger_Mortis_rocket_illustration.png



    232l4il4.jpg



    trigger-mortis.jpg



    trigger-mortis-dust-jacket.jpg
     

    Attached Files:

    Last edited: Jan 4, 2019

Share This Page