Big rocket flying to altitude 40m

[hakudoh]

Uematsu Electric Co., Ltd. will host a competition for model rockets.
There is a roster competition and a rocket competition there.
In model rocket competition, we compete how large a rocket can be launched at an altitude of just 40m.
I challenge it to test launch.
I wrote about it on my blog. Please read it because you can translate it with the button on the lower left.

https://gallery-h.net/top/?p=386

 

[hakudoh]

Rules of altitude competition

The Rocket Division is a competition that aims for the altitude of 40m with the largest possible aircraft.

The evaluation method is the volume of the aircraft × (40-how far away from the 40m reached altitude), it competes in the size of the calculated value.

Participants will use a common engine to design, build and launch a rocket (airframe) that meets the opposite conditions of weight and strength.

Engine used is Estes B6-4

 

[BABAR]

Sounds like a great challenge.
Are you allowed to use launch towers instead of rods?
Are you allowed to use piston launchers?

 

[hakudoh]

Sounds like a great challenge.
Are you allowed to use launch towers instead of rods?
Are you allowed to use piston launchers?

Yes, I can use either.
However, I can not come up with an effective tower or piston launcher with a body tube of 11 cm in diameter.

 

[BABAR]

Three poles stuck in the ground?

 

[hakudoh]

Three poles stuck in the ground?

I found a site like this.
I will try it.
https://www.nar.org/contest-flying/fai-spacemodeling/construction-techniques/piston-launchers/