Semroc Aerobee-Hi - KV-2
Skill Level 2
1958 Retro Reproduction of the 1st
Mass-Produced Model Rocket Kit
Semi-Scale Sounding Rocket Model
Laser-Cut Balsa Fins
Precision-turned Balsa Nose Cone
Water Slide Decals
Body Diameter 0.825" (2.1cm)
Length 14.0" (35.6cm)
Fin Span 3.2" (8.1cm)
Net Weight 0.8oz (22.7g)
Engine Approx. Altitude
The first production models of the MMI Aerobee-Hi were produced with hand-turned maple nose cones. Later production models used a soft vinyl nose cone. A parallel wound body tube was lined inside with a thin aluminum motor mount at the bottom and several wraps of manila paper in the upper section to protect from the ejection gases. The early versions used the 11/16” x 2.5” Rock-a-chute motors. The MMI Kit O01 sold for $7.95 and included the Aerobee-Hi, launcher, and 6 standard Type A engines. These were slightly more powerful (6.7ns) than a modern B6 engine and sold separately for 6 for $2.50.
The MMI Aerobee-Hi was not an exact scale model but was close enough for many early model rocketeers to build and fly a small version of a popular sounding rocket of the 1950’s. The Retro-Repro Aerobee-Hi is designed to capture the MMI version as thousands of modelers flew in the infancy of model rocketry. The modern updates to the Aerobee-Hi are laser-cut balsa fins, precision turned balsa nose cone, and a more reliable Kevlar® shock cord mount.
Model Rocket Kits are rated by Skill Level
If you are just starting in the hobby start at the beginner level and move up from there at your own pace.
What is needed to build and fly
All model rockets come in kit form that require assembly. The materials are primarily cardboard tubes, balsa or plastic fins and nose cone. Materials will vary by model and are typically specified in the description of each kit.
Additional supplies will be necessary to build and finish your model rocket kit and may include:
Scissors, Hobby Knife
Wood Glue, Model Cement or CA(Super Glue)
Finishing Supplies like:
Launching Equipment and Supplies like:
Model Rocket Motors and Igniters
A safe place to fly using guidelines from the National Association of Rocketry Safety Code