Martin RTV-N-12 Viking 7
Updated: November 5, 2004
Model: Modelkit (460 KB)

Instruction:
Instruction - Page 1 (560 KB)  
Instruction - Page 2 (540 KB) 

Rocketstand: Rocketstand (280 KB) 

Paper model of viking 7 rocket Cardboard model of viking 7 rocket

Viking 7 and a model of the first succesfull american satelite launcher Juno I 

paper craft of viking rockets

Viking 7 compared to Viking 10 (on the left.)

    

History

The Viking series of sounding rockets was built by Glen Martin for the Naval Research Laboratory (NRL). 

The Viking rocket was more than a replacement for the V-2. Itís engine was a servo-controlled gimballed motor for attitude control during flight. In comparison the V-2 was controlled by graphite vanes placed in the exhaust flame. Breakdown of these vanes often caused launch failures. Another modern feature of the Viking rocket was the integration of the tanks in the fuselage of the rocket.

None of the viking rockets was exactly of the same design, because NRL and Martin constantly made small improvements on the rockets. But the rockets was designed in two basic designs. Viking 7 and itís predecessors were of the first type named RTV-N-12, and Viking 8 to12 were of  a totally new design best known by the Viking 10. This more avanced type was named RTV-N-12 a.

The first Viking rocket was launched a White Sands proving ground on  may 3 1949 and reached 80 km (50 miles). 

Viking 7 was launched on august 7,  1959. It reached an altitude of 218 km (136 miles), which was a new altitude record. 

The length of the viking 7 was 14,81 m (48 ft 7 in) and it was so small, that it could be moved on a special cart pulled by an ordinary jeep.

Flying model:

Eric Truax has made a mod-kit for this model, so it can be fitted with a mmx-rocket-engine:

How to make a flying Viking 7 

Sources for this model on the web:

www.designation-systems.net

www.designation-systems.net

Beggs aerospace - The viking rocket

www.astronautix.com

White Sands missile range museum

NASA Sounding Rockets, 1958-1968, A Historical Summary

Rocket rivalries - Smithsonian Institution

Books and other sources:

The viking rocket story (1955) by Milton W. Rosen

"Science with a vengeance - how the military created the US space sciences after world war II" by David H. DeVorkin:

Rockets of the world by Peter Alway,

NAR drawing 106 by G. Harry Stine

Thanks:
And thanks to Erik T. G., who gave me the idea to update the model and Lars for the inspiration for the rocket stand..