Quantcast

AeroTech Open Thread

The Rocketry Forum

Help Support The Rocketry Forum:

jd2cylman

Still not Carl... ;-)
TRF Supporter
Joined
Jun 17, 2011
Messages
4,899
Reaction score
758
Is there a reason a long-burn motor couldn't be developed for the 29/40-120 case? Similar to the g25 in the 29/120? Is the heat the issue? If its possible, I'd love to see one developed!
Closest they had to a long burn was the G33BJ. But those are gone now. I believe the problem with those was that they were technically over the 62g limit. Thus the rework into the G54FJ. They were cool.
 

DeepOvertone

Well-Known Member
TRF Supporter
Joined
Oct 29, 2017
Messages
270
Reaction score
57
Closest they had to a long burn was the G33BJ. But those are gone now. I believe the problem with those was that they were technically over the 62g limit. Thus the rework into the G54FJ. They were cool.
I'm not familiar with the BJ suffix as it applies to rocket motors. Is that an old abbreviation for black jack?
 

DeepOvertone

Well-Known Member
TRF Supporter
Joined
Oct 29, 2017
Messages
270
Reaction score
57
Yup. Now they’re called fast black.
As far as I know there is Black Jack and Black Max. The Black Jack has the J designator and the Black Max has the FJ designator. So, it would seem that BJ would have been Black Jack and not Black Max(or fast black/fast jack). But I could be wrong.
 

jd2cylman

Still not Carl... ;-)
TRF Supporter
Joined
Jun 17, 2011
Messages
4,899
Reaction score
758
Tomato/potato...
sorry.
Black Max is the fast version.
So, old was black jack (slower burning), new is black max (faster burning).
 

DeepOvertone

Well-Known Member
TRF Supporter
Joined
Oct 29, 2017
Messages
270
Reaction score
57
Tomato/potato...
sorry.
Black Max is the fast version.
So, old was black jack (slower burning), new is black max (faster burning).
Right, I knew this. I just didn't know what BJ stood for.. Assuming it stood for Black Jack before being shortened to just J for Black Jack.
 

Walter Longburn

Well-Known Member
TRF Supporter
Joined
Aug 27, 2018
Messages
153
Reaction score
94
Location
Kansas
Any 75mm or 98mm Slow White Lightning motors in Development? I wouldn't mind a 75mm 4 grain DMS L motor with Slow White Lightning. I know it's none of my business what motors your developing and you don't need to answer me but I did notice 75mm and 98mm Slow White Lightning grains added to the RCS store.
 

Rocketjunkie

Addicted to APCP
Joined
Jan 19, 2009
Messages
4,308
Reaction score
527
Is there a reason a long-burn motor couldn't be developed for the 29/40-120 case? Similar to the g25 in the 29/120? Is the heat the issue? If its possible, I'd love to see one developed!
G25's used to be single use (now called DMS). Wish they still were.
 

AeroTech

Lifetime Supporter
TRF Lifetime Supporter
Joined
Dec 17, 2009
Messages
378
Reaction score
688
The G25 worked well in the older paper-phenolic case design. We dropped the single-use G25 because we stopped using those cases and it doesn’t work well in the glass-phenolic molded cases. Yes, you could use a liner but that reduces burn time and total impulse. There is also the difficulty of achieving accurate pyro time delays with long burn motors.
G25's used to be single use (now called DMS). Wish they still were.
 

AeroTech

Lifetime Supporter
TRF Lifetime Supporter
Joined
Dec 17, 2009
Messages
378
Reaction score
688
Those grains are used in the long burn 75 & 98mm motors. I assume you mean core burning vs. moonburning?
Any 75mm or 98mm Slow White Lightning motors in Development? I wouldn't mind a 75mm 4 grain DMS L motor with Slow White Lightning. I know it's none of my business what motors your developing and you don't need to answer me but I did notice 75mm and 98mm Slow White Lightning grains added to the RCS store.
 

Walter Longburn

Well-Known Member
TRF Supporter
Joined
Aug 27, 2018
Messages
153
Reaction score
94
Location
Kansas
Last edited:

crossfire

Lifetime Supporter
TRF Lifetime Supporter
Joined
Jan 16, 2011
Messages
4,548
Reaction score
543
Will the smaller single use motors come under the same name someday? Q Jets, Ecno Max Enerjet.
 

Tractionengines

Well-Known Member
TRF Supporter
Joined
Aug 29, 2020
Messages
121
Reaction score
50
Location
Northeast Ohio
TMT has certified four new motors from Aerotech. There are two new Q-jet by Aerotech 24mm single-use motors, the D22W and the E26W, both with fixed delay times of 4,7, and 10 seconds.
What is roll out plan for these? These look GREAT for small field MPR. Can't wait for this summer. THANK YOU for keeping up expanding the options on the low end of the power spectrum.
 
Last edited:

neil_w

Marginally Stable
TRF Supporter
Joined
Jul 14, 2015
Messages
11,130
Reaction score
3,981
Location
Northern NJ
I foresee a lot of those 24mm QuestJets in my future. The E26 might well replace both the E15/20 and E30 for most of my usage. Need to get the thrust curve files and see how they sim.

Are the D22W and E26W on Thrustcurve.org these motors? They're listed as hazmat there, which makes me uncertain.

Great, great stuff, earning the coveted three thumbs up. 👍 👍 👍
 
Last edited:

Theory

Well-Known Member
Joined
Nov 30, 2018
Messages
806
Reaction score
526
See LOTS of D22 flights in my future

if the burn time matches the ‘22’ they should be great for my local field
 

Mike Haberer

Well-Known Member
TRF Supporter
Joined
Jan 7, 2019
Messages
457
Reaction score
288
I foresee a lot of those 24mm QuestJets in my future. The E26 might well replace both the E15/20 and E30 for most of my usage. Need to get the thrust curve files and see how they sim.

Are the D22W and E26W on Thrustcurve.org these motors? They're listed as hazmat there, which makes me uncertain.

Great, great stuff, earning the coveted three thumbs up. 👍 👍 👍
Looks like it, the specs match up. It's confusing because they show up under Aerotech, whereas the C18W and D20W released in late 2020 are under Quest Aerospace. All White Lightening, all Q-Jets. There should be consistency in the assignment, either all Quest under Quest, or the Quest engines split by propellent (BP under Quest, composite under Aerotech). John Coker, if you're following, maybe you can weigh in.

As far as hazmat, that's confusing as well. The manufacturer may say non-hazmat, but vendors may lump them into hazmat because they are composite without really looking into it. Buyer beware. As for what the designation is on Thrustcurve, that depends on the poster. Another JK question (the C18W and D20W are listed as hazmat, but I think they are not according to Aerotech/Quest).
 

neil_w

Marginally Stable
TRF Supporter
Joined
Jul 14, 2015
Messages
11,130
Reaction score
3,981
Location
Northern NJ
Looks like it, the specs match up. It's confusing because they show up under Aerotech, whereas the C18W and D20W released in late 2020 are under Quest Aerospace. All White Lightening, all Q-Jets. There should be consistency in the assignment, either all Quest under Quest, or the Quest engines split by propellent (BP under Quest, composite under Aerotech). John Coker, if you're following, maybe you can weigh in.

As far as hazmat, that's confusing as well. The manufacturer may say non-hazmat, but vendors may lump them into hazmat because they are composite without really looking into it. Buyer beware. As for what the designation is on Thrustcurve, that depends on the poster. Another JK question (the C18W and D20W are listed as hazmat, but I think they are not according to Aerotech/Quest).
I wonder if they were listed that way originally because Aerotech was not revealing that those were to be sold as Qjets. In any event, the thrustcurve entries should be edited.
 

neil_w

Marginally Stable
TRF Supporter
Joined
Jul 14, 2015
Messages
11,130
Reaction score
3,981
Location
Northern NJ
The E26 might well replace both the E15/20 and E30 for most of my usage.
I take that back, I see now that the E26 has considerably less total impulse than the E20 and E30. Looks like all will have their usage.
 
Top