What did you do rocket wise today?

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I've pondered paper mache for otherwise hard to produce shapes. If a solid form is easier than a hollow piece. Is that your reason, or is it something else?
The one's I get are a hollow cone. I got them from Amazon. The are about 1/8th thick. Real solid.
 

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So last night after my KSC visit, I completely nerded out on nose cones per Barrowman via my "Topics in Advanced Model Rocketry." I was up until 1:30 in my hotel room doing a mathematical and Solidworks model of the tangent ogive form to verify Barrowman's contention that the CP is at 0.466 x the length of the nosecone, starting from the apex. just looking at it didn't pass my "sniff test". So I engaged in some more "recreational calculus" -on paper! - and correctly derived the straight cone (pretty straightforward, I'm no whiz...) after my initial stab at the ogive didn't quite match Barrowman. So then I made a Solidworks model and used it's section and mass/volume evaluation properties to verify my Mathcad model, which it did exactly.

So I'm close, but not exact, with Barrowman. I cheated. Integrating the volume of an ogive-bounded curve is a bit gnarly, so I let Mathcad do that. Barrowman says his number is good for a ratio of nosecone length to base radius > 6, for which I get 0.462. I doubt we can get 3 significant figures of accuracy on too many aspects of these models and calcs, so Barrowman's CP stands!
🤓
 
First day of NARAM. I packed the car this morning for the 45 minute drive up. Packed my range box, my field repair box, Scotts range box... and forgot the rolling crate of rockets. We got there about 12:00 and set up the canopy then got some lunch. And I bought a FlisKits Bull's Eye kit. Between 12:30 and 1:00 I age said lunch, read the directions, and installed the screw eye in the nose cone. From 1:00 to 2:00 I was on LCO Assistant duty. From 2:00 to 3:00 I worked on the rocket. From 3:00 to 4:00 I was on low power pad manager duty. I finished the rocket in the nick of time to be the last launch of the day at five minutes to 5:00.

The build was done with only what's in my field repair box, i.e. thin and thick CA, tape, and a Swiss army knife, and a pen. The flight got not even 100 feet altitude on an A8-3. Safe landing.
 
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Got my cert 1 today at Argonia Rocket pasture. Sorry, no pics.
Rocket was a Madcow Patriot ¼ scale. (4 inch) used an AT H283-ST.
Altitude was only 797 ft. Perfect flight otherwise.
Wind was intermittent, so naturally blew like H E dbl hockey sticks. Had to walk about 2400 ft to retrieve it.
I could not have gotten my level 1 without the help and encouragement from this forum. Thank you all.
I found these pictures of my cert 1 flight on the Kloudbusters Facebook page. Guess I do have some pics
D3E47DA0-F37C-4718-B6BC-CFE167897F14.jpegD921F71E-786A-43A6-A2B8-317D76FAE26A.jpeg90851317-827D-4E70-96FB-39306BDEB64E.jpegC8172609-E137-43BF-93D3-25FB73A124CF.jpeg
 
Launched with Ron K. today at our "faux" NARAM.
I had five rockets.
NewWay Cornered: FAIL
Only one motor ignited, clips remained attached to the other motor,

Centuri X24 Bug clone: FAIL
Rocket de-kitted at ejection

Estes Dragonite: Nominal
Slight damage, one fin popped out. Easily repaired.

Leading Edge Micro Yellow Jacket: Nominal
Tested the Flight Sketch Comp. Love it.

Applewhite Micro Stealth: Nominal
Hope to load the videos soon.
Edit: Ron is going to post the videos on his thread.
 
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Update on my fly the fleet goal I flew two rockets at Bong, WI today. The winds were blowing at 15 mph. 1st rocket was a LOC Go Joe on a F25W to 1090' The 2nd rocket was a 25 year old NCR Phantom 4000 on a G40W. Good flights and recoveries.
 

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Wiring up a 12V to 240V 1500W inverter to be able to plug into the second battery system on my car, for powering stuff at the next launch. Cables need to be relatively serious for that power at a nominal 12V.

Updating my checklist for my next flight, especially in regard to the many telemetry systems that will be flying. I need to make sure I have all the relevant GSE (antennas, Rx, comms cables, power cables, PC) to complete the transmission chain. There will be a 435MHz TeleMega, a GNSS stream on 915MHz from the VTS flight computer, a Featherweight GPS downlink on 915MHz (assuming I can get a lend of an Apple device from my daughter) and a HD video feed at 1.3GHz. Lots of parts to string together on launch day. Now where is that pesky 12V power cable for the 32" monitor...
 
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Went to 2 Home Depots and 2 Lowe's - and failed at finding a spray paint color I wanted to buy for the nosecone of my next record-attempt rocket. What's up with the paint shelves being empty?? (Flat gray and flat white just aren't gonna cut it.) At this rate, I might have to use the airbrush.
 
received the two 7.2 volt batteries that are normally sold for radio control cars and which the North Coast rocketry launch controller that I have never used....I charged the batteries with the included charger, which my son bought me.

went out in the garage with the other two grandsons and we let the five-year-old finish spray painting the rocket that he wants to use and decided that the three-year-old wanted to put tiger stripes on the orange rocket that we sprayed last time they were here so they're really getting enthusiastic about it.
 
Not really today, but it was last night (hope that's close enough....).

I headed out to the local park tonight about an hour before dark. First 2 flights were the Ghost Chaser with B6-4 motors and an Estes altimeter for the payload. Flights clocked at 256' & 252'. Fairly close to Openrocket's prediction of around 265'.

Given that there was no perceptible wind, I was surprised that they drifted as far as they did (about a third of the way down the field). I decided to take a chance and prepped the next launch with a C6-5. The rocket boosted nicely, straight off the pad, but I lost sight of it on the way up nor did I see the ejection (heard it though). Lucky for me some youngsters were also watching off to the edge of the field and they caught sight of it on the way down (they too lost track of it on the way up....guess a white rocket against an overcast sky is a bad combination
wink.gif
). Even though I'd reefed the chute the rocket drifted out of the park and across the street but missed some trees and landed at the foot of driveway. Rocket was successfully recovered, but recovery wouldn't nearly have been as quick if the kids hadn't spotted it on the way down and gave me a bead on it's direction.

But, the night wasn't over! My next flight was the upper stage of the Mongoose. I've flown this before and with a B6-4 it always landed safely in the field. But not tonight. Tonight it drifted much further than usual and landed in the top of 20' tree at the edge of the field! The kids again came to my rescue! The youngest (I'd guess maybe 10 in age) began climbing the tree and was able to climb right to the top. He was able to reach the rocket and tossed it out of the tree! I thanked him and gave him a $10 tip for his efforts
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.

The moral...it helps to have a ground crew! Oh, and the altimeter reading on the Ghost Chaser that left the park was 727 feet.
 
Went to 2 Home Depots and 2 Lowe's - and failed at finding a spray paint color I wanted to buy for the nosecone of my next record-attempt rocket. What's up with the paint shelves being empty?? (Flat gray and flat white just aren't gonna cut it.) At this rate, I might have to use the airbrush.
Same results for me. I was searching for Rustoleum 2X since it was highly recommended by some of the members here on the Forum, but "no joy"... Again, empty shelves.
Fortunately they had enough primer/surfacer, paint, and regular Rustoleum Clear Coat for me to do my project.
 
This weekend I - assembled a new kit, a Mega Rebel, repaired a crashed rocket, got most of the work done building my L2 cert rocket and its twin (the cert rocket has a 38mm motor mount, its twin has a 29mm mount).

When rebuilding a rocket that has most of the body tube replaced, do you strip the old paint off and start over, or just keep layering it on?
 
Yup 2 motor
pretty cool how the motor placement is to the sides of the body tube not straight out the aft end

QUOTE="arconhi, post: 2161623, member: 32425"]
They are goodies. Is the Deuces Wild a 2 Cluster?
[/QUOTE]
 
Yup 2 motor
pretty cool how the motor placement is to the sides of the body tube not straight out the aft end
Did you see the article in the current issue of Sport Rocketry by Curt Heisey?
It's about his Deuces fleet.
Seven models ranging from 2X18 to 2X54mm.
Dia. range from stock to 7.5".
 
Absolutely
To be honest after reading that article I immediately bought the deuces wild kit from fliskit. I thought it was totally cool and unique 👍🏻

QUOTE="kuririn, post: 2161732, member: 25677"]
Did you see the article in the current issue of Sport Rocketry by Curt Heisey?
It's about his Deuces fleet.
Seven models ranging from 2X18 to 2X54mm.
Dia. range from stock to 7.5".
[/QUOTE]
 
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