
******THIS IS THE ARCHIVE PAGE FOR THE ORIGINAL VERSION THAT HAS BEEN DISCONTINUED******
It has been replaced with Blue Tube 2.0, but feel free to browse this page to learn about Blue Tube origin, history and technical information.
Go to www.alwaysreadyrocketry.com/products/bluetube.html to purchase the newest version, Blue Tube 2.0.
Announcing the most exciting product release in High Power Rocketry in years...
In conjunction with Phenix Tube, ARR is proud to announce Blue Tube, a new airframe material borne from the most unusual source, TANK AMMUNITION!
Wanna skip all this? Blue Tube Quik Facts Non scientific data here: Golfing with Blue Tube
Highly abrasion resistant, with massive acceleration potential for a spiral wound product. Able to withstand g-forces that exceed 10x anything any high power rocket flight can present to it. No glassing necessary, no huge gaps to fill, no prepping, no sanding, no nothing, and most of all, COMPATIBLE with existing components!
How can we make these claims?
Drake Dämerau at www.rocketmaterials.org has tested three 3 inch diameter 9 inch long samples at his testing facility at General Dynamics and has confirmed that Blue Tube's axial peak stress was about 2.6 tons and was not prone to shatter or crack like fully cured phenolic.. Drake said "Tough stuff! It didn't break like phenolic does. Gives a lot more under stress."
Here is the data from the test: Numerical Data Graphed Data
Here is the burst strength data sheet from the manufacturer as well.
What does all the data mean?
Well, to put it simply, one must first understand the difference between "flexible phenolic" versus fully cured phenolic. Fully cured phenolic is very strong and very stiff, but is very brittle. So, to adapt to the needs of the HPR community, non brittle phenolic was introduced. I use it, I like it but what most people don't know is that it's the same thing as regular phenolic but just not cooked (cured) as long in the oven. That's it. What's the catch? Well, you have a product that will not be as brittle and more shatter resistant, in exchange for strength! (Bet ya didn't know that!) So, you end up with a really nice airframe that is much stronger than glassine paper tubing but no where near the load bearing of fully cured phenolic. That's where Blue Tube comes in.
Why is this important?
If you buy Blue Tube for your next project, you get far more abrasion resistance, zero cracking, zero brittleness, far more strength than partially cured phenolic, and far more radial strength than all three!
Where did it come from?
This material, manufactured under contract by Phenix Tube for the military, is ALREADY in use as a component in a military weapon that exposes it to an environment where acceleration exceeds 1000g's, as a component inside a warhead of the 155mm Howitzer, and 105mm Abrams Tank ordinance.
Plus, this is 28% more dense than phenolic (because it's NOT phenolic) and 36% lighter than fiberglass.
See below:
| Product | Sample Length | Weight | Weight per inch |
| Blue Tube | 3" x 48" x .062 wall | 577.9 grams | 12.04 grams per inch |
| Plain phenolic | 3" x 48" x .062 wall | 423.9 grams | 8.83 grams per inch |
| Glassed phenolic | 3" x 48" x .062 wall | 868.8 grams | 18.1 grams per inch |
| Filament wound fg | 3" x 48" x .062 wall | 907.2 grams | 18.9 grams per inch |
| Carbon fiber | I don't know, can't afford it. | Really light I'm sure! | (Really light I'm sure) / 12 in per foot. |
There is no question that carbon fiber and filament wound fiberglass is the ultimate in airframes, but, who can afford it?
Why bother when you can have something that is easier to work with and able to take a ride down the barrel of a tank, and 40% cheaper?
Manufacturing process:
(Click to enlarge, will open in a new window, disable pop up blocker.)
Finished product:
Pricing:
Far more forgiving than any other airframe! Completely revamped pricing structure!
| Airframes - Discontinued | ||
| 1.15" (29mm) x .062 wall x 48" Airframe / MMT | ||
| 1.52" (38mm) x .062 wall x 48" Airframe / MMT | ||
| 2.15" (54mm) x .062 wall x 48" Airframe / MMT | ||
| 2.56" x .062 wall x 48" Airframe | ||
| 3" (75mm) x .062 wall x 48" Airframe / MMT | ||
| 4"(3.9", 98mm) x .062 wall x 48" Airframe / MMT | ||
| 5.5" x .077 wall x 48" Airframe (LOC / PR compatible) *See notes below | ||
| 6" x .074 wall x 48" Airframe / MMT | ||
| 7.5" x .08 wall x 48" Airframe, summer '09 release! |
| Extended Length** Couplers for Electronics Bays - Discontinued | |
| 1.15" (29mm) x .062 wall x 8" Coupler | |
| 1.52" (38mm) x .062 wall x 8" Coupler | |
| 2.15" (54mm) x .062 wall x 8" Coupler | |
| 2.56" x .062 wall x 8" Coupler | |
| 3" (75mm) x .062 wall x 8" Coupler | |
| 4"(3.9", 98mm) x .062 wall x 8" Coupler | |
| 5.5" x .077 wall x 12" Coupler (LOC / PR compatible) | |
| 6" x .074 wall x 12" Coupler | |
| 5.5" x .077 wall x 16" Coupler (6 inches longer) | |
| 6" x .074 wall x 16" Coupler (6 inches longer) |
**Note on couplers. The standard length for couplers is now 8 inches and at reduced pricing!
Dealer channels are now available. Click here to request more information and to apply.
* First run issue: Many thanx to David Cox for pointing out a first run design issue with the ID of the airframe. If you are repairing an existing LOC kit, and wish to fit the Blue Tube airframe over the existing LOC coupler, it will be too small and you will have to sand about .02 to fit. The root cause is that the product shrunk more than anticipated during the dry cycle during manufacture, and will be adjusted going forward. The irony is that LOC and PR nosecones fit beautifully, which tells me that a 5.5 LOC nosecone in a 5.5 LOC kit with 5.5 LOC paper tubing would be very loose. Please let me know if you have any other issues by contacting me here.