Vulcan Motors

[Rocketmandave]

Greetings Rocketry Friends!

I am prepping for LDRS and dug into my OLD rocket motor inventory and would like to launch a couple rockets with Vulcan motors.

2 questions...

1. Will they be allowed at LDRS?

2. Does anyone have old thrust curve info for Vulcan motors?

Thanks in advance for any help!

 

[kjhambrick]

@Rocketmandave --

What motors do you have ?

I found three motors ( E25, F50, G80 ) in a 1994 RASP.ENG file.

HTH

-- kjh

; Vulcan ----
E25                       29   77   5-7-10   0.02004   0.072       V-TR2
       0.100    17.6
       0.400    31.7
       0.818    31.7
       1.500    19.6
       1.600     0.0
;
F50                       29  115  5-7-10-12  0.04007  0.112      V-TR2
       0.100    43.1
       0.400    61.1
       0.926    61.1
       1.500    37.2
       1.600     0.0
;
G80                       29  147  5-7-10-12  0.0625   0.142      V-TR2
       0.100    54.0
       0.180    86.8
       1.420    86.8
       1.500    77.8
       1.563     0.0

 

[3stoogesrocketry]

I'll be flying some vintage Kosdon and USR motors. Bring out all the oldies

 

[Art Upton]

Delays tend to be long on very old motors, like a 6 turns into a 10+

I ruined a nose cone and part of a payload section on a LOC IV in 2003 using a 1988 motor from my stash. The delay went long and ejected on the ground.

 

[Rocketjunkie]

I still have some old Vulcan and USR motors. I wouldn't trust the delays, use electronics. USR motors are nowhere near the performance claimed. Another reason to use electronics.

 

[Initiator001]

<snip> USR motors are nowhere near the performance claimed. Another reason to use electronics.
View attachment 646180 View attachment 646181 View attachment 646182 View attachment 646183

Beware of "power voids".

 

[jimzcatz]

Unless removed by TRA,NAR, or CAR motor certifications do not expire. Bring out the oldies!!

 

[3stoogesrocketry]

I still have some old Vulcan and USR motors. I wouldn't trust the delays, use electronics. USR motors are nowhere near the performance claimed. Another reason to use electronics View attachment 646181

My 54mm full J200 Firestarter was more like a mid J100. Barley got a 5 pound airframe up a 10 foot rail before learning over 45 degrees and power arching at apogee.

 

[MClark]

USR motors had issues new.
I’m sure they age like roadkill, not like wine.

 

[Rcktmike]

I have Vulcan i283 and h100
plus a rocket flight h220ss if any is interested

 

[3stoogesrocketry]

I have Vulcan i283 and h100
plus a rocket flight h220ss if any is interested

If you wanna bring them to LDRS, they will be sold