EST1507 A3-4T Engines

Focused solid propellant motors engineered for lightweight model rocket flight with a consistent thrust phase followed by a timed delay before recovery charge activation. Each compact 13 mm motor delivers predictable performance tailored to rockets with low mass and mini engine mounts, and includes the necessary ignition accessories for multiple launches. Certified for hobby use in standardized kits and educational projects.

• Compact 13 mm diameter design fits mini class engine mounts in small rocket airframes.

• Total impulse around 2.50 N-sec calibrated for controlled acceleration with lightweight loads.

• Peak thrust near 6.8 newtons over a short burn phase supports reliable lift-off.

• Built-in 4 second delay between burnout and ejection charge allows stable coasting to apogee.

• Includes four engines with matching starters and plugs for consistent ignition.

• Evenly balanced propellant and casing construction fosters repeatable performance across launches.

• Sized length and weight minimize disturbance to rocket stability and flight path.