NAR Event in 2007!

[Warren B. MusselmanModerator]

Thank you very much Chris… I stand re-educated.

I must say, you are one impressive teenager. I’m still very impressed with the Deuce on two J800’s… such a pretty launch and perfect flight. Get that thing polished and painted and fly it at LDRS this year.

Warren

[Chris LaPanse]

Well, the NCR folks will see it polished and painted before anyone else 🙂

It should be all nice and pretty by the flight at Mayhem. With any luck, the paint won’t be scratched up for its LDRS flight 😀

Thanks though – that rocket was both a lot of work and a lot of fun to fly. It was a lot more work than I had expected at first, but well worth it (now watch me crash it at Mayhem 🙄 )

[Warren B. MusselmanModerator]

You gotta love composites… 10x the work of a cardboard rocket.

Warren

[Dave Tjarks]

While you can’t use fiberglass tubes, you CAN glass paper tubes.

a totally kid NAR event.

First you can use fiberglass tubes. It’s just the ones that are worth a hoot are a booger to make. Maybe someone wants to pay Kevin K a bunch of money for some. He seems to be the reigning glassmeister.

if you think C parachute duration is a kid event, just wait til you see the crazy stuff they can drag out. 3 to 4′ mylar parachutes in a rocket the size of an alpha. 😯

Dave2 – bored at work so I had to type something.

[Bruce R. Schaefer]

if you think C parachute duration is a kid event, just wait til you see the crazy stuff they can drag out. 3 to 4′ mylar parachutes in a rocket the size of an alpha.

Sorry! It’s not a kid event, but easier for a kid to do. Besides mylar, anybody still use cleaner bags? Or does that date me? And thanks for bringing us back on topic, D2. 🙂

Here are some good options put forth by Russ Anthony of CRASH (Russ is the NAR Regional Contest Director for our region), and he has been a wealth of information and help:

A) Event Weight Factor

---

---

E Superroc Duration 18
G Dual Egg Duration 31
A Parachute Duration 7
Open Spot Landing 4
—-
60
If you add A helicopter or C boost glider for 20, you are at Regional
status with 80, for more challenge.

B) Here’s another lineup a little easier and more suited to kids:

Event Weight Factor

---

---

D Dual Egg Duration 27
E Superroc Duration 18
D Streamer Duration 11
Open Spot Landing 4

---

60
If you back down to single eggloft, it will allow for helicopter or boost
glider and still keep it at Open rather than regional. (Not that it
matters.)

C) Event Weight Factor

---

---

E Superroc Duration 18
F Egg Duration 20
A Boost Glider Duration 18
Open Spot Landing 4
—-
60

If no one can come up with anything else, then these are probably the ones we should vote on. Keeping it to an Open in June for our first meet is probably the best idea. Four events we can handle; five or more, really can’t or shouldn’t be handled in one day, especially since it will be our first NAR competition. Look at these carefully, offer changes, and I’ll ask Warren to post a survey vote for events over the weekend.

[Chris LaPanse]

Well, I don’t see E BG anywhere in those – Nate’ll be disappointed (as will I)

Other than that, I like option B.

[denverdoc]

Couple seperate subjects: re the Eggs, it is doable, as I have argued from the beginning. But whether mother nature or the best thru-hole electronics balks first might be the best question. I seriously doubt any egg can survive a 1000 gees. But they are strong. With luck you can toss one over the roof on to grass without a splat, and who doesnt know that even the surest and strongest has a helluva problem crushing one in their hand purely with compressive strength. Now add a fingernail or even finger to the eqn its gooey sooey. But airframes are under symmetrical loads, at least at zero degrees, so theres a lesson.

Bruce, I have posted on CRASH another itinerary to choose from which includes E B/G. We have to have a glider event. Forget heli’s for now, these are the ones that get the ooh and ahs. 2 years ago at balls under great ridicule a teenage pair finally got their J boost glider in the air. It was a crowdpleaser and one that the crowd actually demanded an encore flight of. Never seen that before or since.
JS

[Chris LaPanse]

Couple seperate subjects: re the Eggs, it is doable, as I have argued from the beginning. But whether mother nature or the best thru-hole electronics balks first might be the best question. I seriously doubt any egg can survive a 1000 gees. But they are strong. With luck you can toss one over the roof on to grass without a splat, and who doesnt know that even the surest and strongest has a helluva problem crushing one in their hand purely with compressive strength. Now add a fingernail or even finger to the eqn its gooey sooey. But airframes are under symmetrical loads, at least at zero degrees, so theres a lesson.

Well, based on some fairly solid math, I got well over 300 gees for sure, and likely around a thousand on a test I did. Not sure what more I can say…

I was stunned that the yolk didn’t break though. I was extremely confident that the shell would survive (note to all: fluid cushioning works), but I wasn’t expecting the yolk to survive as well.

[Bruce R. Schaefer]

Chris, John, I agree. But remember I (and Russ) just recommended events. I didn’t say they couldn’t be different:

Look at these carefully, offer changes…

Personally, one of the few events I wanted to participate in was the E BG. There’s Nate, Dave2, Me, Chris?, and John? who were thinking about this event. Doesn’t mean we can’t have it. Just look at the Oktoberfest DVD and listen to the “Oooh’s and Aaah’s” Nate received from his flight, and deservedly so. I am just concerned and think it is important to please the majority. No one, and I mean NO ONE, can please EVERYONE, nor should you try. This is the club’s NAR event, and we need input from NCR members. This was a concensus vote. I made a duplicate post on CRASH-Talk, because members of CRASH were more supportive and enthusiastic than NCR members so far. I needed their input to start getting this off the ground. John, both of us should post here and duplicate on CRASH, if it calls for it. We can’t let this go on much longer, a week tops. Joe is going to need to promote the event, rockets have to be built, and we need to get into this. 🙂

[denverdoc]

Couple seperate subjects: re the Eggs, it is doable, as I have argued from the beginning. But whether mother nature or the best thru-hole electronics balks first might be the best question. I seriously doubt any egg can survive a 1000 gees. But they are strong. With luck you can toss one over the roof on to grass without a splat, and who doesnt know that even the surest and strongest has a helluva problem crushing one in their hand purely with compressive strength. Now add a fingernail or even finger to the eqn its gooey sooey. But airframes are under symmetrical loads, at least at zero degrees, so theres a lesson.

Well, based on some fairly solid math, I got well over 300 gees for sure, and likely around a thousand on a test I did. Not sure what more I can say…

I was stunned that the yolk didn’t break though. I was extremely confident that the shell would survive (note to all: fluid cushioning works), but I wasn’t expecting the yolk to survive as well.

What more can i say? Well the math is wrong, it follows from point mass assumptions that neglects certain real world issues, first and foremost: that the decelleration was linear, and can be treated algebraicaly vs with calculus, ) that the egg shell didn’t deform and store elastic energy, granted thats tough to swallow but bone is surprisingly flexible as well,3) that the receiver didn’t help in the same way–watch an egg throw competition, it’s not like a line drive to the SS. The receiver allows the egg to slowly come to rest by moving with the catch. So whether its soft dirt or tupperware the flex here has to be considered. Another way to look at the same issue is with energy: the kinetic energy of a falling body/time to stop is impulse. If Doug could do some high sped vids, that might shed some light.

Heres to the first Denver Omelette competition,

[Author]

Posts