Public Missiles Patriot (1/4 Scale)

Public Missiles - Patriot (1/4 Scale)

Contributed by Glen Nardin

Manufacturer: Public Missiles
(Contributed - by Glen Nardin)

• How were the instructions?First of all, this was not only my first 4-inch rocket, but also my first to use phenolic tubes. I would recommend [it] highly as anyone's first High Power rocket, but if you've never worked with epoxy, you may want to stop and learn a few things about it. I suggest you use the longest setting epoxy you can find in order to give you time to "get things right. " There is nothing about epoxy in the instructions. Easy to follow? Yes. I had no problems assembling the piston and the through-the-wall fins (which were all new to me, too. )There are enough illustrations to guide you through. No unusual tools were needed in the building phase.

• Ease of Building:All parts fit naturally with only minor cutting or sanding. The fins are pre-cut G2 and only need to be epoxied (which I repeat may be the tricky aspect. )The one thing that no one includes is a engine retainer, which you will have to custom install. I was rather irritated when I realized that I'd have to tape in an "H" engine to qualify for Level I certification. You really need to build in a famous "Kaplow Klip. "(see the RMRFAQ) If you care about looks, you will want to fill and sand the phenolic spirals. I used Bondo Spot Putty (at any auto supply. )It was very hard to sand, but the finished product was worth it. [Picture]

• Quality:You will not find a sturdier rocket than the PML Patriot. After building card tube rockets for 20+ years, I was amazed when it weighed in at 4-1/2 pounds. You almost could stand on it and not hurt it. There are no decals, but you do receive a paint detail. The picture on this kit is the one of two popular paint schemes of this missile. I must admit that is the least popular of the two, but it looks sharp if you choose it. Most people don't realize that the paint schemes are just for the test missiles. The actual missiles, according to a source of mine who loads them, are normally black or OD green.

• Flying:I flew it on an Aerotech G-80W and it worked well. It is a bit under-powered, however, and I much preferred the flight on an H-180W. I had the original kit for the 29mm engine, and now you may get it with the 38mm. I highly recommend the 38mm and really wish I could launch mine with an "I" engine.

I would rate this rocket a 5 point rating except for one problem I had in my first attempt at Level I certification. The shock cord wedged itself between the piston and the airframe on ejection. This piston moved forward enough to force the nose cone out and, fortunately, the parachute emerged and opened. But, the ejection charge was back blew a hole in the aft airframe between two fins. PML should mention in the instructions to avoid this problem by tucking the shock cord in the parachute. I had to completely replace this section (with no sympathy from PML, I might add,) but flies again beautifully.

• 4 ½ points:: Very Good, needs an alternate paint scheme, and better instructions for use of the piston ejection (see above. )

You might remember in the Persian Gulf War one of the most newsworthy items to surface was the Patriot missile. Never before had we tried to knock out enemy missiles like Iraq’s Scuds with another missile. The technology was revealed after the war to be not as good as they thought, but it spurred a whole new interest in this defense system. The entire system has been upgraded and the missile is now more accurate than ever. Of course, you have to realize that this is like trying to stop a bullet flying through the air with another flying bullet!

Flights

Comments:

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S.A.M. (January 1, 2000)
The 1/4 scale Patriot is a great kit! I flew the kit for my Level 1 certification. Very easy to build and very fun to fly! I would highly recommend this kit to anyone starting out in High Power. I would also like to say that technical support from PML is superb. Andrew Waddell has been very helpful each and every time that I needed some assistance. I am so pleased with PML and their kits that I am building a PML AMRAAM 4 for my Level 2 certification.
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C.R. (January 1, 2001)
I liked the paint scheme of the one on the PML site so that's what I did. It came out good, but, I didn't like the fact that PML didn't give you decals. Flies good on G's . The kit didn't give you a retention system so I made one with 2 blind nuts (also known as T nuts) and some wire. The large 44 in. parachute was cool and perfect. The piston ejection system worked good. Overall I love this kit. It took me 2 days to build and another 4 days to paint.
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W.L. (August 1, 2001)
I built the Patriot for my level one cert on a H97 M - smoky slow liftoff and chute right at apogee. Used the T nuts for motor retention - learned how to fill spiral joints in phenolic tubing (that was time consuming), a non issue with the new plastic airframes PML is packaging. Cut the launch lugs at a taper and roughened them up with sand paper before gluing and drilled several small pressure equalization holes in airframe - H220 M impressive flights. Going to fly new on an 29mm I motor :) Recommend 38mm motor version (didn't have when I purchased) and a quick switch kit - make sure you purchase a kit with the newer plastic airframe!
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G.S. (April 25, 2002)
One tough rocket. On my first flight I used a G80-10, way too much delay. (Thanks to vendor suggestion error). The rocket flew to about 1200 feet, and nosed dived into the field, then the chute deployed. The rocket was buried about 6 inches up the body tube. I dug it out and found the nose cone waffled, but absolutely no damage whatsoever to the rest of the rocket. I replaced the cone, and have flown the rocket many times on an I211-med. Do that with phenolic !
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S.P. (December 10, 2003)
I can attest to how tuff this rocket is. I built it for my level 1 certification flight and it performed flawlessly. On the second launch I used an I211 and it boosted nicely ejection charge at apogee and then things went wrong, the chute tangled and it came in fast, bounced off the lake bed and went about 5 feet back into the air. I walked over to inspect what was left of the rocket and it turned out that all that was wrong was the paint flaked off. That's it. No cracking of the tube, no dents anywhere. When built right this rocket is indestructible. Now just have to fix the paint and she is good to go.
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J.M.D. (December 20, 2003)
I originally built my Patriot for my L1 cert. After several flights I decided to convert it dual deploy using PML's specs which adds about 18". I also added rail guides. I have flown my Patriot on motors through the CT J330 reaching 4218'(per the ADEPT ALTS2 altimeter)with arrow straight boosts and ripping off the rail like the real thing! This is a great rocket, a lot of fun. One of my favorites.

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