Aerobee 300

Semroc Flying Model Rocket Kit Aerobee 300™ KD-5

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Skill Level:
2 Intermediate
Motor Mount Size:

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Semroc Flying Model Rocket Kit Aerobee 300™  KD-5

Skill Level 3 Advanced

1/10 Semi-Scale Model

Precision Turned Balsa

Node Cone and Transition

Laser Cut Balsa Fins

Water Slide Decals

Ejection Baffle

16" Parachute Recovery

Scale Design by Carl McLawhorn

Body Diameter 1.54" (3.9cm)  

Length 31.8" (80.8cm)  

Fin Span 6.2" (15.7cm)  

Net Weight 2.6oz (73.8g)  

Engine Approx. Altitude 

D12-5    950'  

E12-6    1450'  

PDF Instructions


The Aerobee 300 was designed by Aerojet General and first flown in 1958. It consisted of an Aerobee 150 or Aerobee Hi with a Sparrow upper stage. It was also known as the “Spaerobee”. Because of the much higher altitudes it could achieve, it was only flown from Fort Churchill in Canada. The Aerobee 300 was flown by the Air Force, Navy and NASA over a span of seven years.


Model Rocket Kits are rated by Skill Level

1 Beginner
2 Intermediate
3 Advanced
4 Expert
5 Master
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)
Masking Tape
Finishing Supplies like:
Wood Filler
Launching Equipment and Supplies like:
Recovery wadding
Launch Pad
Launch Controller
Power supply
Model Rocket Motors and Igniters
A safe place to fly using guidelines from the National Association of Rocketry Safety Code
Warranty for 1 year from manufacturer defects

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