AeroTech Open Thread

[AeroTech]

That does not compute in context to your previous post...
View attachment 472245
...unless the stock will take years to run out....

Yes, the existing stock will take years to run out. I was responding to the question about the chances of bringing out MicroMaxx motors with longer delays.

 

[bad_idea]

It's up there now.

https://www.rocketmotorparts.com/75mm_Metalstorm_DM__Propellant_Grain/p1577809_21347097.aspx

In a quarter century online, I've never before seen any company respond to a suggestion so fast. Kudos!

 

[Lord Rory Gin]

Yes, the existing stock will take years to run out. I was responding to the question about the chances of bringing out MicroMaxx motors with longer delays.

I'm trying to figure out how to get a hold of MicroMaxx motors in Canada. Any assistance in that?

 

[AeroTech]

I'm trying to figure out how to get a hold of MicroMaxx motors in Canada. Any assistance in that?

You may have to buy them in the US and bring them into Canada. I don't know if any of our Canadian dealers carry them.

 

[mbeels]

The B6-6W I flew was in an Alpha...and it took it to over 940 feet! Granted, we were starting at 8000 feet MSL, but still....that's crazy height for a B motor. The very same model, with the same type of altimeter in it, has done 630 feet twice on an Estes B6-4 when launched from near sea level and 20 feet or so higher on a Chinese Quest B6-4.To be fair I should fly it on an Estes B6-6 here.

The B6-4W I flew was in my currently active Nova Payloader. It went to 465 feet. Here near sea level on Estes B6-4s typical flights of that model are in the ~275 foot range.

Interesting. Since the total impulse is so similar, do you have any thoughts as to the difference in heights? Lower weight? More optimal thrust curve?

 

[AeroTech]

Interesting. Since the total impulse is so similar, do you have any thoughts as to the difference in heights? Lower weight? More optimal thrust curve?

The TRA-tested total impulse of the Q-Jet B6W is 12% higher. Not sure about any other factors.

 

[BEC]

Interesting. Since the total impulse is so similar, do you have any thoughts as to the difference in heights? Lower weight? More optimal thrust curve?

Lower weight (a little) would be a factor. Beyond that, until I can fly some of them here so as to take out the effect of the high launch field altitude at Alamosa, I don't know.

But I have seen similar "more than just the little bit extra total impulse" performance with the Q-Jet C12s vs. Estes C6s so the shape of the time/thrust curve, at least on models that I like to fly, must be some part of it.

You can bet as soon as I can get some B6-4Ws and B6-6Ws beyond the sample of each Karl and Gary gave me at NSL, I will be flying them and measuring the results.

 

[zog139]

Does Aerotech have a resource for reload delay grains for hobby line motors? I bought packs and packs of reloads over the last 20 years. I've heard the motors themselves should work fine, but the delay grains should be replaced for reliability.

Jim

 

[rcktnut]

Does Aerotech have a resource for reload delay grains for hobby line motors? I bought packs and packs of reloads over the last 20 years. I've heard the motors themselves should work fine, but the delay grains should be replaced for reliability.

Jim

AeroTech Hobby Delay Kits (HDK) : Sirius Rocketry Online Store, For the Serious Rocketeer!

I bought a bunch last year for old Redline and Black Jack reloads as well as some for some old HP loads also. The ones I've used so far all worked well. WL loads, never had a problem with using the old delay elements that came with the reloads, some around 20 years old.

 

[Tractionengines]

What happened to the "NEW" G8ST and G12ST that were recertified a few months ago ? I know you said release would be "later" ... . A number of Vendors have the H13 both with and without thrust rings, but that is just too many NSec... The G's look like fun...

I will keep checking for them, but an ETA would be nice.
Mike

 

[AeroTech]

Q-Jet B6W 18mm White Lightning composite propellant model rocket motors now available!

 

[AeroTech]

What happened to the "NEW" G8ST and G12ST that were recertified a few months ago ? I know you said release would be "later" ... . A number of Vendors have the H13 both with and without thrust rings, but that is just too many NSec... The G's look like fun...

I will keep checking for them, but an ETA would be nice.
Mike

Soon... ;-)

 

[BEC]

Q-Jet B6W 18mm White Lightning composite propellant model rocket motors now available!
View attachment 473209

Now I just need to find someone with a listing and stock.

 

[0011001100]

Received my RCS order this morning. I have to applaud Aerotech for just how well packaged everything was. It survived shipping despite looking like ups used it as a door stop or 3. Everything inside was untouched.

 

[JohnCoker]

What is the recommended minimum length of time delay grains should be adjusted to? There are various suggestions that 4s or 6s is the shortest that can be safely made, but we haven't been able to find an official statement.

This came from a thread about delay adjustment in general.

 

[Walter Longburn]

What is the recommended minimum length of time delay grains should be adjusted to? There are various suggestions that 4s or 6s is the shortest that can be safely made, but we haven't been able to find an official statement.

This came from a thread about delay adjustment in general.

This is for 29-54 DMS motors.

 

[Walter Longburn]

18-38 RMS

 

[JohnCoker]

Thanks guys, but the ranges 18-38 and 29-45 overlap so I'll be conservative and say no shorter than 6s.

 

[Walter Longburn]

Thanks guys, but the ranges 18-38 and 29-45 overlap so I'll be conservative and say no shorter than 6s.

The 29-54 are DMS and the 18-38 are RMS.

 

[AeroTech]

The 29-54 are DMS and the 18-38 are RMS.

We probably went that route due to the difference in “touch hole” diameter, which is 1/8” for RMS and 1/4” for DMS. The larger the touch hole, the more likely a burn through might occur with a thin unsupported delay column.

 

[dpower]

Q-Jet B6W 18mm White Lightning composite propellant model rocket motors now available!

Order placed!

 

[Neutronium95]

I currently have a normal RMS delay adjustment tool. Can I use the drill bit portion with printed DMS and 54mm bodies? I have a launch this weekend, and I want to fly either a K695 or K400 with motor eject, instead of electronics.

 

[terryg]

38/1320 Reloads

Are there going to be any other reloads available for this case?

The J510 is a great reload, but some other options would be nice.

 

[AeroTech]

I currently have a normal RMS delay adjustment tool. Can I use the drill bit portion with printed DMS and 54mm bodies? I have a launch this weekend, and I want to fly either a K695 or K400 with motor eject, instead of electronics.

Yes, the drill and knob are identical. Be sure to double check the calibration before using.

 

[AeroTech]

38/1320 Reloads

Are there going to be any other reloads available for this case?

The J510 is a great reload, but some other options would be nice.

When we get some time I would love to work on a new load for this case.

 

[Tractionengines]

What is the black powder ejection charge in the new 24mm Q-jets? Is it the same with both types, and all delay options?

D22-4, 7, 10

E26-4, 7, 10

Thank you.

 

[terryg]

Are there any plans for 24mm G motors?

 

[rharshberger]

Are there any plans for 24mm G motors?

Would love to get my hands on some more G110 and G55 24mm SU motors. Anyone know where I can find thrustcurves or .eng files for them (I know they are long OOP).

 

[mbeels]

Would love to get my hands on some more G110 and G55 24mm SU motors. Anyone know where I can find thrustcurves or .eng files for them (I know they are long OOP).

There is a 24mm SU Aerotech motor on thrustcurve, is it the same one?

https://www.thrustcurve.org/motors/AeroTech/G55/

 

[afadeev]

Are there any plans for 24mm G motors?

+1.

Having a G-reload for 24/60 case might even justify buying that hardware.

Would love to get my hands on some more G110 and G55 24mm SU motors. Anyone know where I can find thrustcurves or .eng files for them (I know they are long OOP).

Aren't those OOP ?
Are they coming back?

a