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Description

A3-4T EnginesThe Estes A3 4T engine is a mini single stage model rocket engine designed for lightweight rockets, making it an excellent choice for classroom launches, student projects, and hands on STEM programs. With a total impulse of 2. 50 N sec and a peak thrust of 6. 80 newtons (1. 5 lbs), this 13 mm diameter engine reliably powers rockets weighing up to 2. 0 ounces (57 g). Its 4 second delay allows for a steady coast phase before ejection, helping students

The extended delay time ensures that the rocket reaches its full trajectory before the recovery system is deployed

30166-2 - AR-5055 Green Adapter Ring (qty

effective way to introduce rocketry concepts in the classroom

25 N‑s and a gentle thrust profile

consistent boost for rockets weighing up to 4

the Vulcan requires only minimal assembly and is ready for the launch pad in just three easy steps

Designed as an Intermediate skill level rocket

this engine delivers safe

including drift studies and duration competitions

the Estes Phantom model rocket sparks curiosity and inspires the next generation of engineers and scientists

The extra plugs support multiple launch attempts

Easy Assembly for Classroom Use