USR vs Aerotech

Dec 18, 2003 287 Replies

LOL

I was just trying to point out that not all Aerotech motors that can be found "out there" are currently certified. It is "buyer beware" around here. John Demar made it sound like they all were certified. I also question the use of the Dr. Rocket hardware after looking at the cert sheet for the I300 on the NAR website.

Also, we have had the discussions about the address change of AT that, according to the TRA/NAR-pro side, means that their "legality" may be in question.

Bob

I thought that motors "in question" warranted instant decertification and elimination of the three year rule? And of course new submissions until every possible imaginable question is resolved, preferably by a court of law.

Unless you can think of something more expensive that would take even longer.

Jerry

yes, buy CTI

;)

- iz

NaCl wrote:

It is true that some Aerotech motors are not certified by NAR or TRA.

All motors made by Aerotech offered for public sale are made at a facility with a LEMP. They also have public documents showing that they have DOT EX numbers for legal shipment. So, the rest of your ascertion are untrue.

-John

But since it is not required it is irrelevent.

Ditto.

You failed to address state, county and local laws.

Or even laws affecting the facility itself.

And when uncertified AT motors are tolerated by TRA and NAR, it is hypocritical they do not allow other uncertified motors.

When NAR or TRA list as certified motors that have not actually met the test standards, they are commiting fraud.

You have seen the LEMP? It has the new address? The DOT docs, as posted on the website, don't have the corrrect address. Lemme see, now. If I remember right, one of the "assertions" about USR was that they couldn't certify OR SHIP LEGALLY because their DOT paperwork had the wrong address.

What assertions did I make? I said the same thing that was said about USR motors. A bunch of "may or may not's". No assertion was made one way or the other.

Bob

Those motors may also be made at a facility with pink toilet seats. That does not mean that all other manufacturer's need pink toilet seats, or that anyone wanting to get into the business needs pink toilet seats, especially when NAR and TRA are suing the government over the whole pink toilet seat issue!

David Erbas-White

you make good points, David

it is perfectly plausible for an individual to see avionics, or photography as the focus of his experimentation in rocketry. For them the construction of the rocket is irrelevant, and the acquisition of a prebuilt rocket lets them get right down to business.

the requirement that they 'certify' by constructing their own rocket as a prerequisite for them to experiment with, say, high altitude recovery, is completely arbitary.

around the world aerospace engineers specialize in areas of expertise completely unrelated to construction or propulsion. Imagine if they all had to fabricate their own sounding rocket before they could get a payload launched?

- iz

Joel Corwith wrote:

Well, he can be happy now as I put him back in the box.

I didn't wade though the whole thread to see if anyone else let you know about another option. Check out

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for some great products as well.

Don't forget mixers with no moving parts :)

Bob, Your way above my plane of simple reasoning.(;-)... I may need to drink a beer before noon today..

Fred

Saw a rocket launched on a 5 grain, 54mm this past weekend; kick ass all the way...

Fred

You never give up, do you Jerry??(;-)

Fred

You bottom posted 3 words to a 6K message and accuse HIM of saying nothing?

Joel. phx

You know, despite the general fuss about how "Aerotech gets special treatment", I think this is something on which we _should_ actually cut them some slack - with a 3-year cycle, everything whose cert was last renewed more then 10 months before the fire would be "expired" already - as they get rolling again, do we really want to have them sit there and not sell anything until all the motors in the catalog get churned through the testing process all over again?

We (i.e. NAR/TRA) really ought to do a "stay of expiration" for a while in this specific case, simply because things would be even crazier otherwise.

-dave w

That was the point.

He did the same, but what, 7 words with no info conveyed?

I compiled a Pro-XX motor reference that has maximum launch weights calculated fro convenience

it is available online at

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enjoy!

- iz

W. E. Fred Wallace wrote:

Better start contacting the state legislatures. As so many have pointed out here, NFPA 112? is law in a bunch of states.

OR, are we now saying that the AHJ has the authority to suddenly decide, oh, we don't really need to do that. If so, then what the heck do we need the NFPA's for?

Let's do a "exemption" of necessary documentation for Jerry.

Bob

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