The real Iris

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Iris decal
Atlantic Research Corp. decal.   This is a black decal placed over a blank white area of the tube.
Iris fin attachment.  The fins have been glued on multiple times after a few sport flights.  Future models would utilize tabs that insert into the body for reinforcement of the glue joint.
Iris booster...  notice the vent hole (there are 2) and the unpainted streamer compartment.  The stuffer tube is a telescoping tube that slips over both motor and motor mount of the upperstage.
Iris booster motor mount.  The scale tanks and scale nozzles are cut to accommodate the BT-50 motor tube.
Iris at sport launch (Bruce Sexton photo)
This BT-60 based Iris model is Jessica's first scale modeling project.  The well-crafted model won third place in C Division Sport Scale at the RAMTEC-10 meet in June 2002.

This is a two-stage model utilizing a D12-0 in the booster and a B6-4 in the upper stage.  She has flown it once or twice with an A8-3 in the upper stage.

The most difficult part for Jessica to build was the booster with its supporting struts and clustered tube arrangement.  The booster uses a stuffer tube with vent holes to facilitate gap staging.  The stuffer tube, although non-scale, also makes for a sturdier model.  

Future projects may include a Peanut sport scale version based around the BT-20 tube and possibly a Giant scale version in BT-80 size. 

Anyone who is interested in detailed Iris scale data, see the NAR Technical Service's website. 


Below Right:  Jessica with her Iris after recovery at RAMTEC-10.  The booster streamer deployed nicely, but one of the upperstage chutes did not deploy--two fins broke off on impact.  Had everything worked flawlessly, she would have been only 5 points behind me!   

Iris recovery


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Page updated 12-13-2007