The Estes 1/2A3‑2T engine is an ideal choice for early-stage STEM programs and elementary-level rocketry activities. This 13 mm mini engine is designed for lightweight rockets under 3 oz (85 g) and delivers a low-altitude, low-thrust launch experience perfect for schoolyards and small recovery areas. Each package includes four engines, four igniters, and four starter plugs, making it easy to equip multiple student groups for hands-on learning.
With a total impulse of 1.25 N‑s and a peak thrust of 8.3 N, the 1/2A3‑2T provides a safe yet exciting launch that introduces students to key aerospace concepts like Newton’s Laws, acceleration, and trajectory. The short 0.3-second thrust duration and 2-second delay before ejection allow for controlled flights and gentle recoveries, minimizing the risk of rocket damage and maximizing classroom success.
This engine pairs perfectly with Estes mini-engine model kits such as Mini Alpha™, Mini Honest John™, and Mini Bertha™, all commonly used in educational settings. Its compact size and consistent performance make it a top choice for early learners and instructors seeking manageable launch power with reliable outcomes. The 1/2A3‑2T’s reduced altitude and recovery distance are especially well-suited for school programs with space or safety constraints.
Developed with educators in mind, the 1/2A3‑2T engine offers repeatable, measurable performance that aligns with NGSS-aligned lesson plans and hands-on STEM learning. Whether you're introducing rocketry in an after-school program, science class, or summer camp, this engine empowers students to safely explore flight dynamics, engineering design, and real-world aerospace applications.
ATTENTION: Estes Industries, LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.
