DARS October HP Launch

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AlfaBrewer

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Hello Dallas Area Rocket Enthusiasts!!

DARS will be holding its (almost) monthly High Power launch Saturday 10/25 at our high power field in Gunter, TX. The current weather forecast has partly cloudy skies with a high of 78°, and winds from the north-east staying under 10mph. If these conditions are what we have on Saturday, we will be set up near the pole barn on the north end of the field. Since this is still a week out, it is quite subject to change. As always, please check the website www.dars.org before heading out. All changes will be posted on the front page.

Launch Details:
Date: Saturday, 10-25-2014
Time: 9 am setup, 10am – 5 pm Launch hours
Location: Gunter High Power Field – Follow this link for directions https://www.dars.org/NAV-special.html
Altitude Limit: 1 mile AGL (5,280 ft above ground level)
Pads Available: Model Rocket, Mid Power, and High Power (Please let us know in advance if you plan on launching a complex rocket or any K or larger motors)
Certification: NAR or Tripoli - All high power flyers must show a current NAR or TRA membership card to prove certification level - no exceptions.
Flight Prep: All high power rockets and flight plans will be reviewed by the RSO before pad assignment to ensure compliance. If you are planning a flight that will be close to our waiver, be prepared to answer many questions or provide a simulation.
Registration/Range Fees: FREE Under 18 modroc/sport.
$5 Adult modroc/sport
$20 High-Power (not DARS member)
$10 High-Power DARS member
Bathroom Facilities: A portable toilet facility will be on-site.
Food/Beverages: Nearest food/gas/facilities are 4 miles northeast, back into Gunter. (It is best to bring your own)
Flight Cards: to speed up range operations please bring your flight cards already filled out to the field. https://www.dars.org/library.html

Read this section if you are planning on a certification flight!! It is best to have your certification team lined up prior to the launch date. You will need two people with the certification at the level you are attempting, or one with a higher certification level (i.e., two L1 or one L2 for a level 1 attempt). Also, you will need to assemble your motor in the presence of your certification team, so bring the motor in its original package. Contact me or any DARS officer (www.dars.org) for assistance with the certification process.

Launch Note:
High Power Motors for sale - Robert Watson will be at the launch with a large inventory of Aerotech EconoMax, HP DMS single use and HP reload motors for sale. Please contact Robert (rwatson_at_buyrocketmotors.com) if you have specific requests or visit his website www.BuyRocketMotors.com.

Volunteers Needed:
We have had very successful launches the last few months due to the large group of support volunteers. We will again need 5-6 people to help with setup and range operations for the day.
 
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Still can't resist:

[video=youtube;ZA0n_Cw6E0g]https://www.youtube.com/watch?v=ZA0n_Cw6E0g[/video]
 
No Warp 9 or VMax for me until I replace my altimeters. Watch for a HP saucer flight!
 
I like saucers. Looking forward to that.

If the forecast stays with low wind I'm leaning toward flying my Mega Der Duke Max cluster style...I'm thinking I-200W in the center and F-12J in the sides for smokiness, that center better light.
 
If the forecast stays with low wind I'm leaning toward flying my Mega Der Duke Max cluster style...I'm thinking I-200W in the center and F-12J in the sides for smokiness, that center better light.

[video=youtube;T437DdmFNPU]https://www.youtube.com/watch?v=T437DdmFNPU[/video]
 
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I decided to go with an H-165R and (2x) F-24W. This will be an awesome flight, or the last flight...but I guess that is always the case.

Man am I looking forward to this launch. This week has felt two weeks long, and it's only Thursday morning.
 
Just what I was thinking........... Only Thursday Morning :facepalm:
 
Me, too. I'm going to launch my son's stomp rocket later....
 
Good time today and great weather. Missed seeing Chuck and Robert V. but still had a fun time. Noteworthy: All DMS motors performed as expected and, as usual................. See you next time.
 
Definitely a great time. Great launch, great weather, great flights and a great group of rocketeers! The mild wind conditions made for for short walks and easy recoveries near the pads.

Did manage to put my RC conversion of the Guillow's foam Space Shuttle into intensive care after a problem on the second launch, but it shall fly again.

All my ancient and decrepit rockets performed nicely otherwise and no one could see their old age spots out on the pad....;)

Flew my 82"x4" own design Aquila on a well behaved DMS I140, my 60"x2.6" Blue Thunder on an H165 Redline, my NCR Eliminator on an F26, my Mig-21 on a D12-3 and 1.5 flights of the little RC Shuttle on D12s.

All in all, a fine day in Gunter.

I hope the weather for the Dec 13 launch is just as good!
 
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I've got a couple of videos of the launch worth sharing. I'll see if I can get them up today and will post back.
 
Had a great time as well. My 3 year old got to fly first rocket Estes Shooting Star twice on C6-5. Tried out Soaring Dusty on an I357T..... no vent hole seems to have resulted in an early deployment at speed. Shock cord snapped on both ends. Upper and lower body tubes impacted a little close to flight line with little damage. 1 - 1/8" plywood cracked about 1/2 it's length just past the fillet. Tubing coupler has a some prang damage. Any good hints on repairing a fine that was covered with lite glass cloth?

Soaring Dusty I357T.jpg

Fun morning for us even. I think I learned a lesson too!

Jack
 
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Had a great time as well. My 3 year old got to fly first rocket Estes Shooting Star twice on C6-5. Tried out Soaring Dusty on an I357T..... no vent hole seems to have resulted in an early deployment at speed. Shock cord snapped on both ends. Upper and lower body tubes impacted a little close to flight line with little damage. 1 - 1/8" plywood cracked about 1/2 it's length just past the fillet. Tubing coupler has a some prang damage. Any good hints on repairing a fine that was covered with lite glass cloth?

View attachment 188600

Fun morning for us even. I think I learned a lesson too!

Jack

I got a picture of your flight from close up. I posted it here: https://darsrocketrypics.shutterfly.com/pictures/1844

Perhaps you could put on a mask and sand/strip the paint down to the glass for the entire fin, and grind the glass out around the crack with a dremel or the like. Then you could rough up the entire fin surface and re-glass the fin right on the rocket. Even a 2" strip of fg would probably give you enough strength to fly confidently. If you get some epoxy down in that crack and get another coat of light cloth on there it should be plenty strong. As long as you don't go nuts with the epoxy and add a ton of weight to one fin you should be ok on balance.
 
Had a great time as well. My 3 year old got to fly first rocket Estes Shooting Star twice on C6-5. Tried out Soaring Dusty on an I357T..... no vent hole seems to have resulted in an early deployment at speed. Shock cord snapped on both ends. Upper and lower body tubes impacted a little close to flight line with little damage. 1 - 1/8" plywood cracked about 1/2 it's length just past the fillet. Tubing coupler has a some prang damage. Any good hints on repairing a fine that was covered with lite glass cloth?

View attachment 188600

Fun morning for us even. I think I learned a lesson too!

Jack

Great picture.
 
Here's video of Jack's flight on the I357 Blue Thunder EZ reload:

[video=youtube;qgels5kAgTo]https://www.youtube.com/watch?v=qgels5kAgTo&feature=youtu.be[/video]

There was actually a fair amount of time between end of motor burn and separation.
 
Steve T's Phoenix on an Aerotech I205 DMS motor. I recall this rocket landed in the pond after the chute got tangled. I never saw Steve after that; I presume he made it back??????????????

[video=youtube;tjQ3JVAnCRA]https://www.youtube.com/watch?v=tjQ3JVAnCRA&feature=youtu.be[/video]
 
Chris B's Der Red Max (isn't that right??) on a central Aerotech H165 Redline and a pair of Aerotech 24mm F24's. I'm surprised how long the F24's burn:

[video=youtube;vVFjpL2Ocfc]https://www.youtube.com/watch?v=vVFjpL2Ocfc&feature=youtu.be[/video]
 
Chris B's Cherokee on an Aerotech H669 Warp 9. Awesome:

[video=youtube;6A0G_QDQdcU]https://www.youtube.com/watch?v=6A0G_QDQdcU[/video]
 
Steve T's Phoenix on an Aerotech I205 DMS motor. I recall this rocket landed in the pond after the chute got tangled. I never saw Steve after that; I presume he made it back??????????????

[video=youtube;tjQ3JVAnCRA]https://www.youtube.com/watch?v=tjQ3JVAnCRA&feature=youtu.be[/video]

He did, but you have to be careful of the CUS-es (Crawfish of unusual size).
 
Chris B's Der Red Max (isn't that right??) on a central Aerotech H165 Redline and a pair of Aerotech 24mm F24's. I'm surprised how long the F24's burn:

[video=youtube;vVFjpL2Ocfc]https://www.youtube.com/watch?v=vVFjpL2Ocfc&feature=youtu.be[/video]

The F24s took a long time to get up to pressure. They hadn't fully lit before my camera near the pad lost them...more than 20' off the rail. They did burn though, they just took some time getting going.

Chris B's Cherokee on an Aerotech H669 Warp 9. Awesome:

[video=youtube;6A0G_QDQdcU]https://www.youtube.com/watch?v=6A0G_QDQdcU[/video]

Im simed it on an I1299 today. I think we all know that is going to happen sometime, probably in the spring...I could very easily get a Warp9 addiction. Is it bad that I'm telling my dealer that?

Thanks for the videos.
 
Here's video of Jack's flight on the I357 Blue Thunder EZ reload:

[video=youtube;qgels5kAgTo]https://www.youtube.com/watch?v=qgels5kAgTo&feature=youtu.be[/video]

There was actually a fair amount of time between end of motor burn and separation.

Thanks for sharing the video!

Based on time in the video, I 5-6 seconds from launch to separation. The delay on the motor ejection should have been set to 12 seconds, so the adds some proof. The simulation in OpenRocket gave me a max speed on 450+ MPH with and expected apogee of ~3000 Feet. So the lesson learned is that the rate of pressure differential internal vs external increases with speed (Higher Ns). While I had not had issues on and H100 or an I140W, the 1 second kick of the I357T obviously made a difference. That mistake will be fixed.... wonder what my next learning experience will be!
 
Thanks for sharing the video!

Based on time in the video, I 5-6 seconds from launch to separation. The delay on the motor ejection should have been set to 12 seconds, so the adds some proof. The simulation in OpenRocket gave me a max speed on 450+ MPH with and expected apogee of ~3000 Feet. So the lesson learned is that the rate of pressure differential internal vs external increases with speed (Higher Ns). While I had not had issues on and H100 or an I140W, the 1 second kick of the I357T obviously made a difference. That mistake will be fixed.... wonder what my next learning experience will be!

You and me both; I too wonder what else I'll learn any given day especially about rockets.
 
That's too bad. HOTROC's has a launch scheduled every Saturday weather permitting so you might check them out. Call ins to 25,000' which is nice.......
 
DARS has a high power launch scheduled for early December. Who's all going????
 
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