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  #71  
Old 11-30-2020, 10:16 PM
Ez2cDave's Avatar
Ez2cDave Ez2cDave is offline
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Quote:
Originally Posted by AeroTech
Over 13,000 feet possible...

What is the "Maximum Liftoff Wt." for an H13ST ?

What is the "Optimum Wt." to reach 13,000 ft. + ?

What is the Mass of the motor ?

Dave F.
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  #72  
Old 12-01-2020, 12:32 AM
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Shreadvector Shreadvector is offline
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Probably a single chemical and not a mix of fuel and oxidizer. The chemical is ignited and breaks down exothermically releasing gas at a rate MUCH slower than our normal BP or composite propellants.


Like the original Jetex pellets or the old Canaroc motors that has a super deep or maybe full centerbore, but had absurdly low thrust for a fairly long time.



https://en.wikipedia.org/wiki/Jetex
https://en.wikipedia.org/wiki/Guanidine_nitrate






Quote:
Originally Posted by Ez2cDave
Are they coming from Aerotech or Jerry Irvine ?

From Jerry's roundabout description, especially the part about needing a larger diameter if more thrust is desired, tells me that these are end-burning motors.

The "unanswered question" is how can you have a "solid rocket propellant" ( pre-mixed oxidizer & propellant ) that does not come under BATFE "scrutiny" or HAZMAT, especially in HPR motors ?

What is the ISP of this "mystery propellant" ?

Can it also be used in non-endburning motors ?

Can its Burn Rate be increased and still remain "exempt" ?

Dave F.
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  #73  
Old 12-01-2020, 08:21 AM
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AeroTech AeroTech is offline
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H13ST-P
Diameter: 1.13 (29mm)
Length: 8.0
Propellant: Super Thunder (ST)
Total impulse: 211.2 N-sec (47.48 lb.-sec)
Burn time: 15.2 sec
Peak thrust: 9.78 lbs. (43.5 N)
Delay time: Plugged
Propellant wt.: 116.4 grams (4.11 oz.)
Loaded wt.: 203.4 grams (7.18 oz.)

I would keep the rocket under one pound liftoff weight. Optimum weight is probably the motor weight, so the lighter the better.

Quote:
Originally Posted by Ez2cDave
What is the "Maximum Liftoff Wt." for an H13ST ?

What is the "Optimum Wt." to reach 13,000 ft. + ?

What is the Mass of the motor ?

Dave F.
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Questions about this post or other topics concerning AeroTech products? Please contact AeroTech via phone, fax, email or our Facebook page at:

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-rocketry.com
http://www.facebook.com/pages/AeroTe...e/159005948954
customerservice@aerotech-rocketry.com
warranty@aerotech-rocketry.com
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  #74  
Old 12-01-2020, 08:32 AM
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AeroTech AeroTech is offline
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https://patents.google.com/patent/US6045638A/en

Quote:
Originally Posted by Shreadvector
Probably a single chemical and not a mix of fuel and oxidizer. The chemical is ignited and breaks down exothermically releasing gas at a rate MUCH slower than our normal BP or composite propellants.


Like the original Jetex pellets or the old Canaroc motors that has a super deep or maybe full centerbore, but had absurdly low thrust for a fairly long time.



https://en.wikipedia.org/wiki/Jetex
https://en.wikipedia.org/wiki/Guanidine_nitrate
__________________
Questions about this post or other topics concerning AeroTech products? Please contact AeroTech via phone, fax, email or our Facebook page at:

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-rocketry.com
http://www.facebook.com/pages/AeroTe...e/159005948954
customerservice@aerotech-rocketry.com
warranty@aerotech-rocketry.com
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  #75  
Old 12-01-2020, 08:30 PM
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Ez2cDave Ez2cDave is offline
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Quote:
Originally Posted by AeroTech


Is that a disclosure of what the propellant is or just information about what Fred mentioned ?

Dave F.
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  #76  
Old 12-01-2020, 09:12 PM
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AeroTech AeroTech is offline
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I have no idea what JI was really up to. This is just a reference to something that may be related.

Quote:
Originally Posted by Ez2cDave
Is that a disclosure of what the propellant is or just information about what Fred mentioned ?

Dave F.
__________________
Questions about this post or other topics concerning AeroTech products? Please contact AeroTech via phone, fax, email or our Facebook page at:

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-rocketry.com
http://www.facebook.com/pages/AeroTe...e/159005948954
customerservice@aerotech-rocketry.com
warranty@aerotech-rocketry.com
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  #77  
Old 12-02-2020, 06:44 PM
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BobP_in_Nevada BobP_in_Nevada is offline
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Location: Sparks, Nevada
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Quote:
Originally Posted by AeroTech
Oh, real certified G8s and G12s are coming. Not vaporware.


Zowie!
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