PMC robot model

jflis

Well-Known Member
Joined
Jan 17, 2009
Messages
15,456
Reaction score
137
I was doing some cleaning and stumbled across a PMC I built years ago. This was some robot model that caught my eye and when I started building it I thought it would make a very cool PMC (Plastic Model Conversion).

I thought TRF would get a kick out of it :) here is a pic of it standing upright (it is about 9" tall)
 

jflis

Well-Known Member
Joined
Jan 17, 2009
Messages
15,456
Reaction score
137
Here is the underside, showing the dual 13mm motor mounts.

She *does* fly :) She gets about 40-50 feet on a pair of A10-3T motors
 

jflis

Well-Known Member
Joined
Jan 17, 2009
Messages
15,456
Reaction score
137
A rear view shows the backpack on the robot. This is where I vent the ejection gasses. You can see two shock cords running from the robots hands into the back pack.
 

jflis

Well-Known Member
Joined
Jan 17, 2009
Messages
15,456
Reaction score
137
Here, the back pack is removed showing the parachute compartment
 

jflis

Well-Known Member
Joined
Jan 17, 2009
Messages
15,456
Reaction score
137
This last view shows him in recovery mode. The arms are articulated so that when the backpack pops and the chute comes out, with it attached to those shock cords running to his hands, it will pull his arms up into a classic para-trooper form :)

It isn't the best performing rocket i've ever done (even for a PMC), but it does its job :)
 

n3tjm

Papa Elf
Joined
Jan 21, 2009
Messages
8,224
Reaction score
1,393
Location
Penns Creek, PA
Now... get some of those Apogee B7 or C6 motors... then you will be all set ;). How stable is that rocket?
 

OKTurbo

Well-Known Member
TRF Supporter
Joined
Feb 19, 2009
Messages
1,766
Reaction score
1,012
...cool....

My boy's will love that. I'll have to show them the pics in the morning.

(Gort...clatoo barada nictoo)

John
 

jflis

Well-Known Member
Joined
Jan 17, 2009
Messages
15,456
Reaction score
137
She has a lot of weight forward to help, but she isn't the *most* stable rocket i've ever built... :p

Several problems include weight distribution, very uneven exterior body, low motive power...

Not one I would recommend, but cool none the less :)
 

jflis

Well-Known Member
Joined
Jan 17, 2009
Messages
15,456
Reaction score
137
well, ya gotta understand... in 40 years of rocketry, over 30 of that designing, i did a LOT of experimenting with design ideas...

Not everything worked and not everything worked well (those that did are now kits :D - well *some* of them. I have a LOT left to get into production)...

This beast was an interesting experiement. Doubt if I would go through the trouble again, but she *does* work, even if only marginally. It does tend to attract a crowd though :)
 

graylensman

Well-Known Member
Joined
Feb 24, 2009
Messages
949
Reaction score
4
Have you ever tried building one with a jet pack, i.e. place the motors into a backpack contraption?
 

rstaff3

Oddroc-eteer
Joined
Jan 17, 2009
Messages
11,763
Reaction score
36
I thought about building a robot PMC for my Descon 12 entry, but decided to build it from scratch. Just when I though I had an original idea.....
 
Top