Aerotech - Mirage (89019) [1992-]Contributed by Douglas Gardei The Mirage was the second medium-power rocket and the first Aerotech kit that I built. In addition, this kit is the largest rocket that I have ever built, towering 87" (that's 7'- 3"!).It is 2.6" in diameter and weighs 31 ounces.It flies with 29mm motors. In a nutshell, it's a whole lot of rocket!
The kit comes with three body tubes with couplers, plastic nose cone, and launch lugs. Due to mid-separation, it comes with the hardware necessary to attach two 8 foot shock cords and two nylon parachutes (one 22" and one 30"). The motor mount hardware includes a LABYRINTH cooling mesh and ejection baffle, which eliminates the need for wadding, as well as a motor retention hook. There are three large plastic fins with tabs for mounting in Aerotech's FIN-LOK system through a pre-slotted body tube. Lastly, there is a large Mirage decal. The Aerotech web site indicates that this kit comes with a 24mm adapter. My kit did not and quite frankly due to size and weight the only 24mm motors I would use would be F24 and F39 and then flights would be less than 400 feet. I think its a misprint on the web site because the catalog does not indicate a 24mm adapter. There are six pages of clear, illustrated instructions. There are a couple of breakouts which provide a location guide for the motor mount and a detail of the fin. The remaining illustrations provide adequate information for assembly. The instructions also provide clear warnings on use of glue, such as, not putting it on the shock cord since it will weaken it and to avoid getting glue into the FIN-LOK ring's. The instructions are in logical order and can ensure a successful assembly if followed. The instructions suggest using medium viscosity CA, however, I used 5 and 30-minute epoxy. In doing so, I had to wait a few extra minutes between steps, however, I still built the entire kit in about one and a half hours. The assembly of this large rocket was very easy and there were no problems. All of the parts fit and went together as described. The most difficult part of this rocket is dealing with it's height. If you're not extra careful, you will certainly hit the ceiling a few times. Also dealing with it's size adds a challenge to finishing. During the finishing stage I decided to not fill the body tube grooves with anything and just build it up using Plasti-Kote primer. This was not the best decision. This was not the best decision. It took about 5 coats, sanding inbetween each one, before the grooves were filled. The nose cone was one of the biggest problems due to the molding grooves left on each side. Once fully primed, I chose to paint the rocket with a deep maroon metallic automotive lacquer. I painted the entire rocket this color. Then I took a can of chrome paint and sprayed the nose cone and the upper section of the rocket, not protecting anything from over spray. I think this gave a nice "fade-in" look. The kit comes with one decal with the name Mirage™ on it, however I did not choose to use it at first. I have since gone back and used it. I followed the directions completely and cut out the decal, peeled the back off, dipped it into some soapy water then applied it to the body. I adhered nicely. Overall, for CONSTRUCTION I would rate this kit 5 points. I didn't find a single problem. The Mirage has a mid-separation design which releases the upper five foot section to descend on it's own 22" parachute. The second 30" parachute carries the bottom, fin and motor, section down. The kit uses two launch lugs. One is on the upper section and the other is on the bottom section. These two need to be aligned to allow for a smooth launch off of the guide rod. The last page in the instructions are the "Operation Instructions" and they indicate that "a 1/4" diameter metal launch rod at least 36" long (as measured from the top of the blast deflector)" should be used. This can not be correct and must be a blanket operation instruction for other Aerotech kits since the top launch lug is about 38" from the bottom of the rocket. I used a five foot rod and even that seemed a tad bit short. The second flight was supposed to be on a G80-7, however, after 4 puffs this motor was not going to ignite. So the second flight was on an Aerotech EconoJet G35-7. This flight was also great to watch with separation at apogee. The LABYRINTH ejection gas cooling system did exactly what it claims to; "The ignition of the ejection charge creates a burst of hot expanding gas which is cooled by the permanent metal mesh . . . The cooled gas flows around the baffle, pressurizes the parachute bay and ejects the nose cone (or payload bay) and parachute." I had no damage to my shock cords or parachutes. One other interesting fact about the Mirage is how well suited it is for many different motors. According to wRASP, the Mirage will have excellent flights (with ejection very near or at apogee) on Single-Use motors, F20-4, F25-4, F50-6, G80-7 and RMS motors, F52-5, G33-5 and G64-7. I'm sure the North Coast Rocketry Darkstar F62-6 would also give a nice flight. I look forward to using some of these other motors! For FLIGHT/RECOVERY, I would rate this kit 5 points. Overall, for the price and ease of build, the Mirage is a great kit for someone looking for a very large, mid-powered rocket with little experience. I give the kit an OVERALL rating of 5 points. The following excerpt is from "Sport Rocketry". The intention is to allow guests to get a basic feeling about a kit. We strongly suggest that you get a copy of the referenced Sport Rocketry and read the entire article. Inside you will find many helpful hints in construction as well as other useful information. For more information, use the two links above. The entire article gives the impression is that this is an excellent kit for a beginner/intermediate modeler. Flight Log
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"The Mirage is a tall, attractive model standing 87" tall and 2. 6" in diameter. " 
J.B. (January 1, 2001)