URRG

General Rocketry => High Power => Topic started by: dbmccann on February 02, 2016, 08:27:46 PM

Title: L3 Wildman Extreme
Post by: dbmccann on February 02, 2016, 08:27:46 PM
So I've got the glue in, and the CR's I was missing are on the way here.... So I guess it's time to get working.

I picked this up on the TRF yardsale for $100.   nose is a mess,  it's got a weird booster extension intended for use with hybrids, and it was missing some CRs.  I'm gonna clean it up nice, chop the booster, and fix up the nose.

(https://c2.staticflickr.com/8/7668/16473433763_31ff8be3af_b.jpg)

(https://c1.staticflickr.com/9/8688/17092083252_7293919af8_b.jpg)

(https://c2.staticflickr.com/8/7649/16905808658_0cfd0976ec_b.jpg)

(https://c1.staticflickr.com/1/765/20583014935_c5c4ae3341_b.jpg)


Current plan is MARSA 54L, RRC3,  and BRB900.   May toss an AIM XTRA into that mix if I can get my hands on one.
Title: Re: L3 Wildman Extreme
Post by: RKeller on February 02, 2016, 08:45:30 PM
are you sure you don't want to make it into an Optima Extreme?
Title: Re: L3 Wildman Extreme
Post by: dbmccann on February 02, 2016, 09:27:27 PM
LOL,   It's a thought, but no.  Would need a new nose,  new fins, etc.   Easier to just toss this thing together.   Well I half consider replacing the nose with a FWFG one.... but we'll see.  Too many projects at once.
Title: Re: L3 Wildman Extreme
Post by: mdutch on February 03, 2016, 08:10:40 AM
I know we discussed this somewhat last year, Are you now starting your L3 build to get your certification this year at some point?

If so I look forward to see photos of the progression of your build. I have some of your package in my files now, Don't forget that I still need drawings of the final electronics, a description of the recovery parts and events, and a pre-flight check list.
Other than those your all set, Good luck and enjoy the build.
Title: Re: L3 Wildman Extreme
Post by: dbmccann on February 03, 2016, 08:43:51 AM
Yep, starting the build now.  Actual flight plans are in the air, but if I get that together I plan to have the bird ready to go.    I'll get to work on the drawings and checklist.   Recovery will be finalized once I have real world weights.

Thanks for the help and advice, and photos will be plentiful. 
Title: Re: L3 Wildman Extreme
Post by: dbmccann on February 22, 2016, 10:51:02 PM
Terrible photo, but I got the new CR's in and sanded them to fit.    Next up is getting the aeropack mounted, then spacing the mid CR for the fins.

This thing is one huge motor mount.

(https://c2.staticflickr.com/2/1570/25179809656_fb20c5c86e.jpg)
Title: Re: L3 Wildman Extreme
Post by: dbmccann on March 01, 2016, 11:08:28 PM
Choppy choppy.

(https://c2.staticflickr.com/2/1717/25428462195_128db76ff3_z.jpg)
(https://c2.staticflickr.com/2/1459/25402320416_ddc96bc684_z.jpg)

It's ugly, but It'll sand out just fine.   I'm slowly sanding a bit of the inside BT right now to get the coupler to fit (some glue overrun from the coupler is left.  I'll sand it bit by bit until the av-bay fits in nice and snug.   then comes the fun task of leveling the cut.
Title: Re: L3 Wildman Extreme
Post by: dbmccann on March 02, 2016, 02:36:10 PM
OK. so the upper ID of the Booster has been sanded to fit the lower end of the av-bay.   Still not as smooth as I'd like so a bit more fitting will be done tonight.  The top cut of the Booster has been sanded level to match up with the vent band on the Av-bay.

The lower CR has not been epoxied in place yet, but the aeropack has been installed.   Lacking a 76mm motor, I slid a very tightly fitting 3" FG coupler into place.  Drilling holes and installing screws one at a time, opposite of each other until complete.   There are currently no backing nuts.  My current plan is to bury it all in epoxy.   

(https://c2.staticflickr.com/2/1504/25422189566_19a2846b12_z.jpg)

I have not yet finalized my plan on installing everything.   Working out the locations of the CR's and epoxy order. Putting the rear CR up to the fin tabs would be ideal, yet complicated.   If I leave the tabs above the bottom CR  it's a nice and easy glue it up, then butter up each fin to tack in place and then 3 rotations of injections.    Of course, If I add a 4th CR, I could have it both ways.   (or use the middle CR just above the screws, and below the fin tabs.  This would leave the front of the fin tabs not touching a CR.   Tentatively, I like this plan the best.  Aeropoxy doesn't run out too quickly, and I could always make a forward dam out of tape wrapped around the MMT.)     Thinking out loud there.... And I think I like that.   Makes for a solid setup and many long strong fillets holding the fins in.
Title: Re: L3 Wildman Extreme
Post by: dbmccann on March 06, 2016, 12:06:13 AM
So, the chop cut 1.7 pounds off this pig.   I like that.
Title: Re: L3 Wildman Extreme
Post by: RKeller on March 06, 2016, 07:49:35 AM
nice!
Title: Re: L3 Wildman Extreme
Post by: dbmccann on June 27, 2016, 02:46:48 AM
So, having this project stalled is giving me time to consider other options.  A dangerous but good thing.   I had considered moving over to using my Mongoose 75,  but even small motors sim out between 19.5 and 24K.  So back to the WME.

Original  plans were for a MARSA, BRB900, and an RRC3.  Saw the RTx system at URRF, and it was really cool.   I'm now thinking of adding the RTx into the mix.  Run that system on one 3d printer sled, and run a flipped orange one under it for the MARSA.   Ease of use on the missleworks system, and good data from the MARSA. 

From the webstore-
(http://www.missileworks.com/s/cc_images/cache_947887543.png?t=1459038581)   

Title: Re: L3 Wildman Extreme
Post by: dbmccann on March 09, 2017, 12:34:36 PM
Well, I got this kit two years ago or so.  Things took another lurch forward last night when I ordered a 76/6000 case.    Going to see if I can't get the fins on this thing in the next couple of weeks.
Title: Re: L3 Wildman Extreme
Post by: RKeller on March 09, 2017, 03:24:04 PM
SWEET!
Title: Re: L3 Wildman Extreme
Post by: dbmccann on March 19, 2017, 08:22:03 PM
I decided to go with a 3 CR setup.  Aeropack on the back, pushed directly against the fins, and the fins sandwiched between the two.  This sinks the aero pack into the body some, but it still sticks out the rear.  I'll bury the back in JB weld once everything is installed. I spaced the center ring, and put some tape on the MMT to hold it in place, then put a fillet on the top of the ring.  If you're looking for perfect sexy fillets on internal rings...this is not the build you're looking for. 

(https://c1.staticflickr.com/3/2898/33411560941_0f667cd85e.jpg)(https://c1.staticflickr.com/3/2924/32725670973_0cab5a2980.jpg)

I dropped the MMT into the tail end of the body tube, but upside down.  I marked the locations of the fin slots, which thankfully do not overlap any screws.  Partial fillets were then done.
(https://c2.staticflickr.com/4/3672/33520801295_73bea16b0c_c.jpg)(https://c2.staticflickr.com/4/3794/33540204785_c10a7249b0_c.jpg)

Hardware showed up :)
(https://c1.staticflickr.com/3/2897/32675430044_b1f298985a_b.jpg)

Took some prelim weights and fiddled with the sim a bit
(https://c2.staticflickr.com/4/3939/33411559311_8acaf58b52_z.jpg)
Title: Re: L3 Wildman Extreme
Post by: dbmccann on March 24, 2017, 10:16:29 PM
(https://c2.staticflickr.com/4/3669/32790133864_2a0d1dc1e8_c.jpg)

(https://c1.staticflickr.com/3/2887/33503734331_e10f1dd50d_c.jpg)

(https://c1.staticflickr.com/3/2893/32790132574_43726f1f60_c.jpg)
Title: Re: L3 Wildman Extreme
Post by: dbmccann on March 30, 2017, 11:14:11 PM
Fins sanded and fit,  aeropoxy ES6209 spread into the slots, then fins buttered and hammered into place.   Nice tight fit and stayed in place, so no fin guides.  Lined them up by eye to a printed template.   Right about 14" from the end of each fin to the next.  works for me.

(https://c1.staticflickr.com/3/2930/32935159903_93908e1a9f_z.jpg)(https://c1.staticflickr.com/3/2850/33619112971_22c32bc171_z.jpg)

(https://c1.staticflickr.com/3/2903/33363608500_8f8a605939_z.jpg)(https://c1.staticflickr.com/3/2829/33619113641_c421bb1a8d_z.jpg)

(https://c1.staticflickr.com/3/2818/33363613380_cf9ec76690_z.jpg)

(https://c1.staticflickr.com/3/2863/33748288255_52c9ba91cd_z.jpg)

(https://c2.staticflickr.com/4/3940/32935162233_0a9feb489b_c.jpg)

(https://c1.staticflickr.com/3/2874/33748287705_3cf8f7b87c_c.jpg)

I'm really liking this size rocket.  Large, but still very manageable.  Should fly on a fairly wide range of motors too. 

Next up is the ever exciting injection of fillets.  planning on ten grams of aeropoxy for each fillet, half in each hole.

After that, externals of proline 4500.
Title: Re: L3 Wildman Extreme
Post by: dbmccann on April 01, 2017, 10:49:13 PM
Injected 20 ml of aeropoxy into each side.  5ml a hole in rotation so it could run out a bit in between injections.  Then I taped the holes.

(https://c1.staticflickr.com/3/2815/33654975451_827befedb8_b.jpg)
(https://c2.staticflickr.com/4/3816/33743562166_dc7e04699a_c.jpg)
(https://c1.staticflickr.com/3/2913/33654974311_0e8ccd5421_b.jpg)

At first it piled up in two globs.  after a few minutes, it had ran out fairly well.

(https://c1.staticflickr.com/3/2879/33654972141_91bc8d7339_c.jpg)
(https://c1.staticflickr.com/3/2901/33654973121_6d27ed44b3_c.jpg)
Title: Re: L3 Wildman Extreme
Post by: dbmccann on September 06, 2017, 02:36:33 PM
Work has progressed, I've been lazy on updates so here we go

Aeopoxy poured over the top of the retainer.  It's not coming off...so lets make sure it's never coming off.
(https://c1.staticflickr.com/3/2912/33762366480_14a60efedc_b.jpg)

Look what I picked up at URRF.....
(https://c1.staticflickr.com/5/4257/34697797794_129561f304_b.jpg)
(https://c1.staticflickr.com/5/4023/35618154822_aa73caaf5d_b.jpg)

I also decided it was going to need a new cone, the old gelcoat was a mess.
(https://c1.staticflickr.com/5/4358/36354988630_9f0c2923f9_b.jpg)

Fillet locations sanded and marked out-
(https://c1.staticflickr.com/5/4426/36880672662_8f6d590b8e_b.jpg)

(https://c1.staticflickr.com/5/4365/36654411830_085a11e7b9_b.jpg)
(https://c1.staticflickr.com/5/4397/36216515564_8f234a6139_b.jpg)

(https://c1.staticflickr.com/5/4401/36660581490_e37e79819c_b.jpg)
(https://c1.staticflickr.com/5/4430/36249834063_33cf42044c_b.jpg)

(https://c1.staticflickr.com/5/4360/37057291485_856e7cc1a2_b.jpg)

(https://c1.staticflickr.com/5/4414/36249830393_3ace4547de_b.jpg)
(https://c1.staticflickr.com/5/4369/36249829913_a3b389a1d7_b.jpg)

When I'm taping and pulling and mixing multiple batches, I find it easier to just keep a box nearby to toss everything in-
(https://c1.staticflickr.com/5/4334/36660580600_1785ef9073_b.jpg)
Title: Re: L3 Wildman Extreme
Post by: dbmccann on September 14, 2017, 09:27:56 AM
In primer.

I'm using a 3M sanding sponge to very ver very lightly sand the rough off the primer.


(https://c1.staticflickr.com/5/4410/36385875504_fa063572c7_b.jpg)
(https://c1.staticflickr.com/5/4359/36825335890_8c00a3d330_b.jpg)
Title: Re: L3 Wildman Extreme
Post by: DGBrown on September 14, 2017, 09:40:09 PM
Looks really good. When are you planning to do your cert flight?
Title: Re: L3 Wildman Extreme
Post by: dbmccann on October 23, 2017, 10:18:49 PM
Well, I was planning on sept 2017.


Shit happens.

April 2018?
Title: Re: L3 Wildman Extreme
Post by: mdutch on October 24, 2017, 07:54:59 AM
Dave, remind me please, NAR or TRA L3? I've been following along with the whole Build process and you've been doing a beautiful job. Just let me ask please, can you give me at least a weeks notice that you are going to go for your cert flight. I didn't know that you were planning on trying in September until the Monday after, this way we can make sure that I haven't planned anything else and can be there for you. Like for this October Launch, I already have two L3 Certs to do and Sunday is my 24 wedding anniversary and I plan to leave by 1 PM to go take Linda to dinner.
So it would help if a head of time that I knew that you were planning on trying for a certain launch.
Thanks, Dutch
Title: Re: L3 Wildman Extreme
Post by: dbmccann on October 24, 2017, 08:16:16 AM
Thanks for the comments, it's been a long build but fun.

It'll be TRA.   I'll certainly give at least a week or two notice.  I'd taken the whole weekend off in sept, but right when I was about to make the call to fly or not, my daughter had some minor surgery scheduled and I decided to put it off.   

I'm done flying for this year, so I'm going to spend the winter working on this avbay, but the rocket is essentially finished.
Title: Re: L3 Wildman Extreme
Post by: mdutch on October 24, 2017, 03:18:16 PM
OK so since your going through Tripoli, you will need two TAP's to approve your build. Can you put together a proposal so we can send it off to Jim Livingston so he can be your second TAP. Jim comes up from SC every year to his house on Conesus Lake every summer. he is a club member and comes to the launches and flies with us while he's here but I don't think he is on the club forum. You only need one TAP to witness the flight but two have to sign off on the build.
I can give you Jim's Email and Phone number but not on a public forum. Let me know if you would like to contact him.
Title: Re: L3 Wildman Extreme
Post by: dbmccann on October 29, 2017, 11:20:19 AM
Yep I'll amend the proposal and make sure it's up to date, and get a copy to you and Jim. 

I've got the nose buttoned up, no glue so I can make a bay of it later if desired. 

(https://c1.staticflickr.com/5/4418/37185993102_eaf6016dd4_z.jpg)

And a splash of color-

(https://c1.staticflickr.com/5/4339/36961238370_22261cacaf_b.jpg)
Title: Re: L3 Wildman Extreme
Post by: PGagnon on November 13, 2017, 07:16:38 PM
11.5 Lbs !!!  And an M motor !!!  In this state? LOL.

 This is a BALLS Project and I want to be there. It will go like hell or shred.
Knowing you it go like hell. Cool.
I hope your NOT using rocket sim. There predictions over Mach don't do well.

Paul   8)
Title: Re: L3 Wildman Extreme
Post by: dbmccann on November 13, 2017, 08:20:18 PM
LOL, thanks Paul.... it should be fun :)   

I used Rocksim for CP and CG (measured against actual) and fired the M2550LB at it in there.   Also fed everything through rasaero and the numbers actually weren't far off rocksim.   I'm going to rebuild both sim files from the ground up over the winter to double check it all, but looking around 16,000' and mach 1.5
Title: Re: L3 Wildman Extreme
Post by: PGagnon on November 14, 2017, 07:40:14 PM
 Yes - Fun for the rest of us.
Your going to be nervous as hell. I was.   ;D

Paul


Title: Re: L3 Wildman Extreme
Post by: RKeller on November 22, 2017, 12:32:43 PM
This thing looks awesome! the light weight will help keep it under the waiver. I've had really good results with open rocket over mach, a few flights right around mach 1.5. good stability results and good speed/altitude results. The only challenge I've had is with stubby rockets and boat tails.