KL.SILNIK RAKIETOWY TSP L-4 (0074) / 5 sztuk / GERMANY

Rocket engines of Polish production by Rocket Motors.

TSP L-4 engines are small engines designed for propulsion of rocket gliders and models of jet airplanes with low thrust and very long operating time, even over 18 seconds. Their thrust is so low that they are only suitable for model aircraft that fly thanks to their lift generated by the wings and only horizontally.
Due to their low thrust, they cannot be used for vertical flight, as is the case with rockets.
In the standard coding system for rocket engines, their type is D0.9-P. TSP engines are the perfect replacement for Rapier engines, which are no longer produced, and the famous old Jetex engines that have not been on the market since the 1970s.

For information, tips and tricks visit Jetex.org, which specializes in this fascinating field of aerospace modeling. On this website and its discussion forum you will find a lot of free modeling plans, as well as the support of specialists in this type of fun.

Soon, our offer will include sets of free-flying models dedicated to TSP engines.

Technical data:

• outer diameter: 17.7 mm
• length: 70 mm
• total impulse: 17 Ns
• medium string: 900mN = 0.9N
• engine runtime: 13 to 19 s
• delay: not applicable
• weight: 26.96 g
• package: 5 pieces

The operating and safety instructions are in the appendix.