dual deploy helicopter recovery

[RalPh8]

So I'm wanting to mix up the standard dual deployment regime and pop out helicopter blades at 500' instead of a parachute. I would like to blades to be internally stored inside the upper payload bay and then piston ejected at the pre-set altitude. Has anyone done this before? I'm looking for premade composite blades, either fiberglass or carbon fiber. Everything I've found so far seems to be pre-cut blades for LPR. Does anyone know of any vendors who sell pre-cut composite blades? Maybe I should just make some out of thin plywood? This will ideally be for a 29mm powered rocket.

 

[David_Stack]

What is the length of your payload tube (and airframe diameter)?

Could you repurpose RC Heli rotor blades?

 

[RalPh8]

Remains to be seen. I was kinda wanting to find the blades first and then plan the rocket around them, so-to-speak. You might be on to something with me repurposing RC heli blades? What are they usually made out of?

 

[David_Stack]

Remains to be seen. I was kinda wanting to find the blades first and then plan the rocket around them, so-to-speak. You might be on to something with me repurposing RC heli blades? What are they usually made out of?

You can get blades from wood, as well as glass and/or carbon. All depends upon your budget.

https://www.amainhobbies.com/rc-heli-blades/c816

 

[bad_idea]

How will you keep the blades from tangling in the drogue its shock cord?

 

[RalPh8]

How will you keep the blades from tangling in the drogue its shock cord?

The same way we keep the main from tangling in the drogue or shock cord. The standard upside down “L” formation of dual deploy keeps the payload bay away from the rest of the rocket.