Estes A3-4T Engine Flight Pack #10058

Estes A3-4T Engine Flight Pack #10058 is an Estes model rocket engine flight pack for model rocketry, launch-day use, and hobby programs.

The Estes A3-4T Flight Pack delivers a balanced combination of performance and control, making it an excellent option for lightweight model rockets. With a total impulse of 2.50 N-sec and a 4-second delay, the A3-4T is ideal for small, streamlined rockets needing a gentle but reliable boost. Its short thrust duration of 0.6 seconds provides a quick lift-off while leaving plenty of time for a safe recovery sequence. This engine can lift rockets weighing up to 2.0 oz (57 g), making it best suited for mini engine-powered models with 13mm engine mounts. It reaches impressive speeds and altitudes with a max thrust of 6.8 newtons, delivering a strong initial push before handing off to recovery deployment. The 4-second time delay offers sufficient coasting time for many light rockets before the ejection charge fires. The compact design, just 1.8 inches in length and weighing only 0.28 oz, ensur

Product details

• Manufacturer part number: 10058
• Heartland item number: EST10058

Use only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.