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 MARION, Iowa USA — The following motors have been certified by NAR Standards & Testing for general as Model Rocket Motors effective July 23, 2008.
Aerotech/RCS (AT): F35-5,8,11 (R)
24 x 95 mm
Reloadable Motor
57.1 Newton-seconds total impulse
55.2 Newtons Peak Thrust
34.9 Newtons Average Thrust Propellant mass: 30.0 gm. Propellant Key:
White Lightning Propellant For use in Aerotech 24/60 hardware only G78-4,7,10 (S/L)
29mm x 146mm
109.94 Newton-seconds total impulse
101.9 Newtons Peak Thrust
79.9 Newtons Average Thrust Propellant mass: 59.7 grams Propellant Key:
Mojave Green Propellant Certified as both Single Use and LMS
Motor Type Key:
S = Single Use
L = User Loadable (LMS)
R = User Reloadable (RMS) Bill Spadafora
NAR Standards & Testing
Email:
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07-25-2008 12:01 PM
#1
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The BCS is total BS!!!!!!
Joined: May 2007
Posts: 158
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Re: R122: NAR S&T New Motor Certifications
What is the difference between "L=user loadable" and "r=user reloadable"?
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07-25-2008 12:05 PM
#2
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Freeform rockets advocate
Joined: Aug 2006
Posts: 1298
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Re: R122: NAR S&T New Motor Certifications
Single use is pre glued together.
LUR has a screw top than can be removed from the otherwise SU PLASTIC case and can be reloaded maybe 6 times? Depends on propellant style.
Reloadable has a metallic casing and all the insulation parts are single use so the casing can be reused dozens of times.
Jerry
cite:
AeroTech LUR reload assembly and reload procedure:
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07-25-2008 12:49 PM
#3
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Certified Level Two
Joined: Sep 2007
Posts: 55
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Re: R122: NAR S&T New Motor Certifications
From the Aerotech catalog: "The LMS is a single use motor in kit form that is assembled by the user." You epoxy it together, thus spending a bit more time and a bit less money.
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07-25-2008 12:49 PM
#4
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New Member
Joined: Sep 2006
Posts: 4
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Re: R122: NAR S&T New Motor Certifications
I am sure that User loadable is the LMS motors. The LMS is a single-use motor in kit form that is assembled by the user. Look in the aerotech catalog on page 10.
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07-25-2008 12:58 PM
#5
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Certifiable
Joined: Apr 2007
Posts: 1078
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Re: R122: NAR S&T New Motor Certifications
There is RMS, LUR and LMS. RMS is the metal case that everyone knows and loves. The LMS is the exact same as the normal single use motor but it is unassembled. You supply epoxy and time and build the single use motor yourself. This saves labor costs at Aerotech and thus the motor is cheaper for you. The LUR is a limited reusable case like Jerry described. I don't remember seeing any actual LUR motors but I haven't looked lately.
-Aaron
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07-25-2008 06:17 PM
#6
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New Member
Joined: Nov 2007
Posts: 3
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Re: R122: NAR S&T New Motor Certifications
So, Is that F35 a 29mm. or a 24mm motor?
Typo lists it as both/either.
Scott Goebel
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07-25-2008 06:40 PM
#7
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Administrator
Joined: Jul 2006
Posts: 4025
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Re: R122: NAR S&T New Motor Certifications
Quote: So, Is that F35 a 29mm. or a 24mm motor?
Typo lists it as both/either.
Scott Goebel
Scott, that was operator error.  Thanks for pointing that out, as it is a 24mm motor. |
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07-25-2008 08:05 PM
#8
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Freeform rockets advocate
Joined: Aug 2006
Posts: 1298
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Re: R122: NAR S&T New Motor Certifications
Quote: Scott, that was operator error. Thanks for pointing that out, as it is a 24mm motor.
24mm F's are a feature, not a bug.
Jerry |
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07-26-2008 06:15 AM
#9
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Certified Level One
Joined: Aug 2006
Posts: 25
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Re: R122: NAR S&T New Motor Certifications
Sounds like the F35W is a punchier replacement for the discontinued SU F21W. I like! (I miss the F21!)
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07-28-2008 10:17 AM
#10
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Space Cowboy
Joined: Aug 2006
Posts: 102
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Re: R122: NAR S&T New Motor Certifications
Quote: Scott, that was operator error. Thanks for pointing that out, as it is a 24mm motor...
For use in Aerotech 24/60 hardware only...
24/60 case ? 
Sounds like a new load for the 24/40 case 
I need to try two of them in my LOC StarBurst |
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07-28-2008 10:37 AM
#11
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If pigs had fins...
Joined: Sep 2007
Posts: 3640
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Re: R122: NAR S&T New Motor Certifications
Quote: 24/60 case ?
Sounds like a new load for the 24/40 case
I need to try two of them in my LOC StarBurst
Nope - Just announced 24/60 case. Retails for $75 and has closures with the same threading as the 29/40-120 and thicker walls than the current 24mm. F35 is the first propellant announced for that case. |
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07-28-2008 10:55 AM
#12
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Freeform rockets advocate
Joined: Aug 2006
Posts: 1298
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Re: R122: NAR S&T New Motor Certifications
Quote: Nope - Just announced 24/60 case. Retails for $75 and has closures with the same threading as the 29/40-120 and thicker walls than the current 24mm. F35 is the first propellant announced for that case.
Someone should post a drawing of the new system, especially the case and thermal liner ID/OD.
Jerry |
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07-28-2008 11:27 AM
#13
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Certifiable
Joined: Apr 2007
Posts: 1078
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Re: R122: NAR S&T New Motor Certifications
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