1 Meter Minimum Mile - Northern Colorado Rocketry

This topic has 19 replies, 9 voices, and was last updated 14 years, 4 months ago by Chad.

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March 10, 2011 at 1:39 am #53983
Adrian
Participant
Thanks, Warren.

Ever since I started asking TRA about it in 2007, they haven’t acknowledged the existence of an approved altimeters list. After I sent Tom Rouse a bunch of data and he specifically said the Parrot was good to go, I started saying on my website that the Parrot was Tripoli-approved. Then later I got an email from someone else on the contest committee saying that they haven’t approved any altimeters and I needed to take that claim off of my website. So I don’t think we can expect any guidance on altimeter selection from Tripoli.
March 10, 2011 at 4:10 am #53984
Warren B. Musselman
Moderator
At one time I had a list from someone at Tripoli that had Adept, Missileworks, PerfectFlight, G-wiz, RDAS and a few others on it.
March 10, 2011 at 6:58 am #53985
Chad
Executive Decision… for the purposes of the 1 Meter Minimum Mile, the Altimeter One is a valid altimeter.

Chad- Contest Director
March 10, 2011 at 7:16 am #53986
Chad
Oh… and the winner will probably be the one with the best chosen motor to match the drag and weight of your airframe. So start SIM’ing your design and order ahead of time from your favorite AP vendor.

By my estimation, there are a half dozen motors that might be ideal. Just remember- single stage, max G impulse.
March 10, 2011 at 1:30 pm #53987
Warren B. Musselman
Moderator
Like I said, I think our club contests should be open to any commercial altimeter currently in production or manufactured within the last 12 years say. If there are issues with a particular altimeter, perhaps we might want o see that altimeter fly alongside a known altimeter such as a Raven. Otherwise, the more the merrier. However, above 25K or 30K MSL, I think we should follow TRA and require GPS. Given the situation, I would also suggest that we accept Adrian’s Raven as the sine qua non of standard altimeters as far as accuracy is concerned.

Warren
March 10, 2011 at 11:56 pm #53988
Bret Packard
Participant
I have no idea what that term that Warren just used means, but I think it translates loosely to “Ravens are cool”.
March 11, 2011 at 4:58 am #53989
Adrian
Participant
I hope so, but I’m an engineer, so I don’t know either. Is there an English major in the house? 😉
March 11, 2011 at 3:09 pm #53990
new2hpr
Participant
Engineer here, too. But there is Wikipedia!!!

Sine qua non (pronounced as Americanized /ˌsaɪnɨ kweɪ ˈnɒn/ or more Latinate /ˌsɪneɪ kwɑː ˈnoʊn/)[1] or conditio sine qua non (plural: sine quibus non) refers to an indispensable and essential action, condition, or ingredient. It was originally a Latin legal term for “[a condition] without which it could not be,” or “but for…” or “without which [there is] nothing.”

-Ken
March 11, 2011 at 3:22 pm #53991
Warren B. Musselman
Moderator
Think of it as meaning “The standard by which all others are judged…” It was a compliment…
June 3, 2011 at 5:51 am #53992
Chad
And the winner is… nobody actuallky. We had three entries. One didn’t fly (cloud base too low at the time), another launched and was lost, and another had a nice flight, but the altimeter didn’t return a believable number.

So were gonna fly this again at the July 9-10 launch. Additional participants are welcome!
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