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  #11  
Old 05-22-2021, 02:30 PM
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LeeR LeeR is offline
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Quote:
Originally Posted by BEC
That's about the size of it, isn't it?

The 8-second delay would be about right for the LOC IRIS "park flyer" I'm bringing along. It did nicely on a 50 N-s F39-6 on its maiden (pre paint-job flight).



Yes, more cash is not a bad thing, in my book. Unfortunately, my wife and I both love to spend, so there is never any “checks and balances”. Well , we don’t write checks, but we should watch our balances.

Next year is 48 years of marriage. Something tells me nothing is going to change!
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  #12  
Old 05-22-2021, 02:47 PM
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Quote:
Originally Posted by LeeR
Yes, more cash is not a bad thing, in my book. Unfortunately, my wife and I both love to spend, so there is never any “checks and balances”. Well , we don’t write checks, but we should watch our balances.

Next year is 48 years of marriage. Something tells me nothing is going to change!


Congratulations. Our 43rd anniversary falls on Sunday of NSL this year.....
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  #13  
Old 05-23-2021, 08:57 AM
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Quote:
Originally Posted by Ez2cDave
I wonder if this "Classic Propellant" will be the original ENERJET "APP60", with Polyurethane as the Binder ?

Dave F.

APP60 was 80% AP, 20% Flexane 60. Polyether polyurethanes like Flexane have some oxygen in the binder so it didn't take a very high propellant "solids loading" to produce a smokeless exhaust. HTPB propellants have a higher amount of carbon in the polymer so a higher solids loading is required to simulate the same effect...in the range of 84-86%.
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  #14  
Old 05-23-2021, 11:41 AM
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Quote:
Originally Posted by AeroTech
APP60 was 80% AP, 20% Flexane 60. Polyether polyurethanes like Flexane have some oxygen in the binder so it didn't take a very high propellant "solids loading" to produce a smokeless exhaust. HTPB propellants have a higher amount of carbon in the polymer so a higher solids loading is required to simulate the same effect...in the range of 84-86%.


Will Aerotech be duplicating the original ENERJET Orange flame, with ZERO smoke ?

Dave F.
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  #15  
Old 05-23-2021, 01:10 PM
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My memory was of a somewhat blue-white flame, of what flame one could see.

Earl
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  #16  
Old 05-23-2021, 02:40 PM
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Quote:
Originally Posted by Ez2cDave
Will Aerotech be duplicating the original ENERJET Orange flame, with ZERO smoke ?

Dave F.

It’s as close as we could make it.
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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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  #17  
Old 05-23-2021, 03:04 PM
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Quote:
Originally Posted by AeroTech
It’s as close as we could make it.


Are there any video's of static tests ?

Also, will these motors be Progressive Thrust, like the original ENERJET motors ?

Dave F.
Attached Thumbnails
Click image for larger version Name: 1972 Enerjet Catalog 002full.jpg Views: 30 Size: 440.7 KB  Click image for larger version Name: centuri-enerjet-e24-model-rocket_2.jpg Views: 29 Size: 162.3 KB  
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  #18  
Old 05-23-2021, 07:13 PM
Scott_650 Scott_650 is offline
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Quote:
Originally Posted by Ez2cDave
Are there any video's of static tests ?

Also, will these motors be Progressive Thrust, like the original ENERJET motors ?

Dave F.
https://www.thrustcurve.org/motors/AeroTech/F52C/

I’d say no based on the data on Thrustcurve
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  #19  
Old 05-23-2021, 07:51 PM
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Quote:
Originally Posted by Ez2cDave
will these motors be Progressive Thrust, like the original ENERJET motors ?

Dave F.

The time-thrust curve is in the first post....
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  #20  
Old 05-23-2021, 08:15 PM
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Quote:
Originally Posted by TigerHawk
Is Thrust (LBS.), as shown on the original ENERJET box, comparable to the Thrust (lb.- force) as shown on the Thrustcurve statistic for the F52C ?

No, this motor would have been slightly progressive except for the erosive nature of the nozzle. The new F52 also has significantly more total impulse than the original.
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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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