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Old 08-06-2013, 12:26 PM
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AeroTech AeroTech is offline
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Default AeroTech Demonstrates 18mm RMS-R/C™ Reloads at NARAM-55

7/24/13

AeroTech Demonstrates 18mm RMS-R/C™ Reloads at NARAM-55


AeroTech unveiled two new 18mm RMS-R/C rocket motor reload kits at the National Association of Rocketry (NAR) NARAM-55 launch near Aurora, OH.



The C3.4T-P and the D2.3T-P reloads are “plugged” and intended only for use in radio controlled rocket gliders and cars. They do not include a delay or ejection charge and are therefore not suitable for standard vertical launch model rockets, without the use of electronic recovery system deployment.

The motors were successfully demonstrated in several flights by Zachary Stenberg and Keith Vineyard at NARAM on Friday 7/26 in their FAI class S8D R/C rocket gliders.



Instead of using R/C-specific hardware like previous RMS-R/C motors, AeroTech designed the new end-burning reloads to be compatible with existing RMS-18/20 hardware. Users are instructed to plug the ejection well in the forward closure with “JB Weld” epoxy to prevent reverse thrust from escaping out the forward end of the motor as the propellant grain burns out. AeroTech will make a separate forward closure available for users who wish to continue using their RMS-18/20 motors with standard model rockets, and there are also plans for a “plugged” forward closure to eliminate the step of applying the JB Weld epoxy.

Both motors are NAR certified and have an initial thrust spike of approximately 2 pounds that quickly drops to about ½ pound during the sustain portion of the burn, tapering to 0.4 pounds at burnout with the D2.3T-P. The C3.4T-P has a burn time of 2.9 seconds while the D2.3T-P has a burn time of 8.6 seconds.

http://www.nar.org/SandT/releases/R142.html

The C3.4T-P and D2.3T-P reloads may be purchased by flyers 18 years of age or older, with no user certification required. The reloads are available now from the ValueRockets.com website at $12.99 per 3-pack for the C3.4T-P and $14.99 per 3-pack for the D2.3T-P. A bulk pack of 12 reloads will be available soon at a price 10% lower per reload than the 3-pack price.

The 18mm RMS-R/C reloads ship with the new FirstFire Mini™ 2-wire igniter due to the extremely small throat size. Ignition with the new igniters is easy, quick and reliable.

Instructions and NAR certification documents for the 18mm RMS-R/C reloads are now available for download in PDF format from the Resource Library on the AeroTech website at http://www.aerotech-rocketry.com/.
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For warranty questions & issues please contact Karl at warranty@aerotech-rocketry.com
For customer service questions & issues please contact Jenn at customerservice@aerotech-rocketry.com

AeroTech Consumer Aerospace
Division of RCS Rocket Motor Components, Inc.
2113 W 850 N
Cedar City, UT 84721
435-865-7100 (Ph)
435-865-7120 (Fax)
http://www.aerotech-quest.com
http://www.rocketmotorparts.com.com
http://www.specificimpulse.com
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  #2  
Old 08-06-2013, 12:35 PM
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Jerry Irvine Jerry Irvine is offline
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This D2.3T-P feels like a good candidate for 2 staged vertical flight controlled by a Raven altimeter with events. IIRC it does that. The rocket to use is here:

http://v-serv.com/usr/kits/record_breaker.htm

I believe it is in stock for immediate delivery as well.


Photo by Bruce Sexton

The JB weld trick could be replaced by a head end installation of the supplied First-Fire Mini-tm igniter for the upper stage, using any reasonable sealant including 5 minute epoxy so it is more readily removable using a dental pick, or drillable for reloading. This presumes you are able to recover such a beast . . . .

In the early 80's I flew a 2 stage 24mm E6 (Gary motor) to 1992 M (6535 ft) at a NAR contest in Sunnyvale, CA. It was optically tracked. That was about 18 seconds of thrust and used direct pyro staging. This one is a second less thrust but higher thrust to weight ratio and far lower frontal area.

This could benefit from a thrust ring free rear closure on the upper stage.

Tech Jerry


Last edited by Jerry Irvine : 08-06-2013 at 12:53 PM.
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Old 08-06-2013, 12:45 PM
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Bill Bill is offline
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Quote:
Originally Posted by AeroTech
AeroTech will make a separate forward closure available for users who wish to continue using their RMS-18/20 motors with standard model rockets, and there are also plans for a “plugged” forward closure to eliminate the step of applying the JB Weld epoxy.



Good move! Some of us were talking about this on Saturday and thought that not everybody will want to dedicate a case just for these loads.


Bill
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Old 08-06-2013, 02:51 PM
fulldec fulldec is offline
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On behalf of the RC Rocket Glider community, thanks for developing and releasing these motors.

Don
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