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Semroc V-2 Rocket Kit

Semroc V-2 Model Rocket Kit - Airplanes and Rockets

Completed Semroc V-2 model rocket

 - Airplanes and Rockets

V-2 masked for painting 

Semroc V-2 model rocket w/parachute - Airplanes and RocketsThe Semroc V-2 model rocket kit was modeled after the original Estes V-2. The V-2 is one of the Estes models that I always planned on building as a kid, but for some reason - most likely budgetary - I never got around to it. What I liked about the Semroc kit was that it kept with the original all balsa components rather than substituting molded plastic parts for the nose cone and tail section.

German engineers, headed by Wernher von Braun, designed the V-2 (Vergeltungswaffe 2; i.e., Retribution Weapon 2) during World War II to deliver warheads to London and other European cities. They wanted to be able to launch from within Germany, and doing so required an active guidance system to assure accurate delivery over spans of hundreds of miles. The V-2's inertially stabilized guidance platform did the job. After being captured by Allied forces, Wernher von Braun eventually headed the Mercury and Apollo projects for NASA.

This page was originally created in 2012, shortly after ordering the V-2. Now, about 4½ years later, I finally have it built.

The building process was pretty straight-forward. The Estes Fin Alignment Guide was used for attaching the fins. It was the first time I ever used the jig. Because of the way the bottom of the Semroc V-2's body curved inward, I needed to add a spacer to the Semroc V-2 model rocket on Estes Fin Alignment Fixture - Airplanes and Rocketsblank engine tube used to hold the body in place on the jig (see photo). After marking the locations for the four fins on the body tube, I placed the body tube on the jig and then used thin strips of masking tape to hold it rigidly perpendicular to the base while using a plastic architect's triangle for alignment. Next, the four plastic fin plates were slid into the base of the jig and were also set perpendicular and taped for rigidity. Estes does not say to do so, but the Estes Fin Alignment Guide is not rigid enough on its own to guarantee perpendicularity. Finally, the fins were glued to the body tube using Duco cement.

V-2 model rocket on Estes Fin Alignment Fixture - Airplanes and RocketsTo back up a little bit, before gluing the fins to the body tube, I used home-made balsa filler (clear dope + talcum powder) to seal the grain on the balsa fins, and then pre-primed both the fins and the body tube. Sanding the fins after attachment would have been a real pain in the posterior. Both the fin edges and attachment points on the body tube were carefully sanded clear of primer prior to gluing. A few layers of Duco cement were used to build up a fillet between the fins and body. I did not bother trying to get the scale-like increased fillet near the bottoms of the fins.

Semroc V-2 model rocket fin alignment using jig - Airplanes and RocketsOh, I forgot to mention that the balsa provided for fashioning the servo pods on the fins was way too soft for use, and appeared to be a tad undersized per photographs of the full-size V-2 rocket. I substituted hard balsa.

Estes Saturn V, Estes Mercury Redstone, and Semroc V-2 - Airplanes and RocketsTo the right is a photo of my Estes Saturn V, Estes Mercury Redstone, and Semroc V-2 together.

The paint job I used for the Semroc V-2 model rocket is the one shown on the packaging cover. However, after looking back at the photo I took of the real V-2 on display at the Smithsonian Air & Space Museum sometime back in the early 1980s, I wish I had painted it that way instead. Oh well, maybe someday I'll get bored and re-paint it that way.

V-2 rocket in the Smithsonian Air & Space Museum - Airplanes and Rockets
Archive Footage of the V-2 Program (NOVA)

This documentary film produced by the NOVA staff has previously unseen footage of Germany's rocket program, focusing primarily on the V-2 rocket development. Interestingly for people like us, it shows how model rocketry was a major sport in Germany during the period between World War I and World War II. There is some great footage of laymen's attempts at launching model rockets.

 

Here is a list of my other rocket models.

 

 

Posted May 13, 2017 (original post was December 22, 2012)

About Airplanes & Rockets

Kirt Blattenberger, Webmaster - Airplanes and Rockets
Kirt Blattenberger
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Even during the busiest times of my life I have endeavored to maintain some form of model building activity. This site has been created to help me chronicle my journey through a lifelong involvement in model aviation, which all began in Mayo, MD. There is a lot of good information and there are lot of pictures throughout the website that you will probably find useful, and might even bring back some old memories from your own days of yore. The website began life around 1996 as an EarthLink screen name of ModelAirplanes, and quickly grew to where more server space ...

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