Thanks! The parachute is held with a plastic door, released at apogee by a servo that is activated by a simple electronic timer. The time of deploy is set based on data from online water rocket simulators.
First time seeing fiberglassing over pet bottles. Pet alone holds the preasure, fibers just prevents deformations? Or bottles are only a frame for fiberglass?
It's a little bit of both. PET bottle can hold up to 10 bar, but here we have 7 (propably not ideal) glue joints, which are weaker than non-cut bottles. The purpose of fiberglass is to stiffen the structure and hold it together.
Rocket looks great! Congratulations on hitting 140m! That's awesome. :) Looking forward to the next phase.
Thanks George! :)
Nice quality work with your rocket build! 140m is impressive - a great achievement.👍
Thanks!
Nice Rocket! Don't see many fully painted Water Rockets
Thanks!
Hey, super cool rocket 🚀 How did you deploy the parachute?
Thanks! The parachute is held with a plastic door, released at apogee by a servo that is activated by a simple electronic timer. The time of deploy is set based on data from online water rocket simulators.
First time seeing fiberglassing over pet bottles. Pet alone holds the preasure, fibers just prevents deformations? Or bottles are only a frame for fiberglass?
It's a little bit of both. PET bottle can hold up to 10 bar, but here we have 7 (propably not ideal) glue joints, which are weaker than non-cut bottles. The purpose of fiberglass is to stiffen the structure and hold it together.
With 2 wraps of 200gsm fiberglass the PET bottles can hold ~300psi. The PET bottles themselves will fail around 180-190psi.