NCR Development Environment | Chris LaPanse | Activity https://dev.ncrocketry.club/members/chris-lapanse/activity/ Activity feed for Chris LaPanse. Fri, 23 Sep 2022 14:16:29 -0600 https://buddypress.org/?v=9.0.0 en-US 30 hourly 2 4ec497b5c13d52503041b39af36369db Chris LaPanse replied to the topic "need AT 54mm forward seal disk!" - https://dev.ncrocketry.club/about-us/activity/p/16684/ Tue, 09 Jul 2019 06:19:59 -0600 I believe I have one that you can borrow (though I don’t want to sell it). I’ll check before I leave. I’d imagine Joe will have one too.

]]> 814c5e19477e900bcde41435be9bfbe3 Chris LaPanse replied to the topic "Tripoli-Colorado's "Fall Frenzy" launch" - https://dev.ncrocketry.club/about-us/activity/p/16572/ Tue, 09 Jul 2019 06:19:42 -0600 I’ll be there 😀

]]> a3e8b314f353534ecbaed6bcfc1ed77b Chris LaPanse replied to the topic "Who Is Going To Balls?" - https://dev.ncrocketry.club/about-us/activity/p/16552/ Tue, 09 Jul 2019 06:19:40 -0600 I’m going, but I’m still figuring out the details of my accomodations for the trip, so I can’t guarantee anything yet. I’ll let you know if I have room though.

]]> 9c2b62e65c4bf10b7a2675dd6a26fbde Chris LaPanse replied to the topic "ATK in Utah tests new Z16013598-P motor!" - https://dev.ncrocketry.club/about-us/activity/p/15067/ Tue, 09 Jul 2019 06:16:05 -0600 X?Based on some rough calculations, I get that it’s an AE class motor (7 categories above X). This motor is to an X motor what a P motor is to an I.:D

]]> 5a0c54b10361592207a7ed6536490acc Chris LaPanse replied to the topic "Found Rapscallion, congratulations Bill!" - https://dev.ncrocketry.club/about-us/activity/p/14994/ Tue, 09 Jul 2019 06:15:55 -0600 Glad to hear it was found, and in perfect condition too :D(Steve’s right – the visibility was fantastic that day. I can’t believe I kept sight of it all the way up to 25k and back)

]]> dfa52136d7542775a39665b92b39997d Chris LaPanse replied to the topic "Question on database of HPR flight failure root causes" - https://dev.ncrocketry.club/about-us/activity/p/14944/ Tue, 09 Jul 2019 06:15:47 -0600 Heh – it’s a great example to use, and it does perfectly illustrate how often, the problem isn’t what you think could go wrong, but it is instead what you didn’t ever think could be a problem. I know I…   Read more»

]]> e98df94b9add301aa703544f7a413ada Chris LaPanse replied to the topic "Question on database of HPR flight failure root causes" - https://dev.ncrocketry.club/about-us/activity/p/14942/ Tue, 09 Jul 2019 06:15:47 -0600

… unknown cause, appears nose cone may have come apart at Mach 2.5.

Hmmm…. I wonder who that could be 😯

]]> 2783423587cb654f6e37689975679c73 Chris LaPanse replied to the topic "Terrier-Orion test launch at Wallops Island Flight Facility" - https://dev.ncrocketry.club/about-us/activity/p/14863/ Tue, 09 Jul 2019 06:15:36 -0600 It’s a neat rocket, that’s for sure. I was part of a student team that had a payload on a Terrier-orion last year, and I went out to Wallops to watch the launch. It’s amazing to see that kind of…   Read more»

]]> 28269318203b7f536ee17cd22c396adf Chris LaPanse replied to the topic "MHM Day Four" - https://dev.ncrocketry.club/about-us/activity/p/14819/ Tue, 09 Jul 2019 06:15:30 -0600 More brainstorming: Have you calculated the differential pressure that your nosecone shear pins would have to withstand? Was the nosecone shoulder seated firmly against the airframe, to prevent your shear pins from taking G loads during the boost? Did the…   Read more»

]]> 557d173bd51057aefadc36edc82bfde4 Chris LaPanse replied to the topic "MHM Day Four" - https://dev.ncrocketry.club/about-us/activity/p/14816/ Tue, 09 Jul 2019 06:15:29 -0600 Definitely not. I looked at it fairly closely before flight, and it definitely wasn’t ready to fall apart.

]]> 10d1a402665c7f8ad76855ba9b7c786f Chris LaPanse replied to the topic "MHM Day Four" - https://dev.ncrocketry.club/about-us/activity/p/14813/ Tue, 09 Jul 2019 06:15:29 -0600 Fiberglass, yes, but no reinforcement. It was just a glass nosecone stock from PR. It’s been up to ~M1.5 3 times before, and M1.8 once, and never had any issues. Apparently, 2.2 was too much though.

]]> 57a8446d7bb0952f9760e4795046a6ee Chris LaPanse replied to the topic "MHM Day Four" - https://dev.ncrocketry.club/about-us/activity/p/14811/ Tue, 09 Jul 2019 06:15:29 -0600 Did you get data? I wouldn’t have thought it possible for a nosecone to fail before a tube or coupler, but I guess anything is possible. Maybe we could see what altitude it was at, and look for wind shear…   Read more»

]]> 7ebfe5973c0f1e4e9d632385ab5e1f7c Chris LaPanse replied to the topic "MHM Day Four" - https://dev.ncrocketry.club/about-us/activity/p/14807/ Tue, 09 Jul 2019 06:15:28 -0600 Did you get data? I wouldn’t have thought it possible for a nosecone to fail before a tube or coupler, but I guess anything is possible. Maybe we could see what altitude it was at, and look for wind shear…   Read more»

]]> 29e479565b6aaa525856fb6946710644 Chris LaPanse replied to the topic "MHM Day Four" - https://dev.ncrocketry.club/about-us/activity/p/14803/ Tue, 09 Jul 2019 06:15:28 -0600 Warren: it shredded on the way up. Apparently, a PR 5 inch nosecone isn’t terribly happy at mach 2.2.(My fins stayed on though :D)

]]> 0a93bc25d31705cea0ef17b9870e96b7 Chris LaPanse replied to the topic "High altitude winds" - https://dev.ncrocketry.club/about-us/activity/p/14763/ Tue, 09 Jul 2019 06:15:21 -0600 Absolutely. It would be good to have an up to date map of where exactly the boundaries are, and who owns the land beyond each (or is leasing it).

]]> d5203ca964abc4b3c8a2c00d1d29eba9 Chris LaPanse replied to the topic "High altitude winds" - https://dev.ncrocketry.club/about-us/activity/p/14760/ Tue, 09 Jul 2019 06:15:20 -0600 Warren,I really don’t see where the problem is to the east, and to the west, there’s a single, solitary, tiny patch of land. To the north, there’s quite a bit of private property, and to the south, there’s some, but…   Read more»

]]> 504bdd274c7ba166c2526c40874944f6 Chris LaPanse replied to the topic "High altitude winds" - https://dev.ncrocketry.club/about-us/activity/p/14755/ Tue, 09 Jul 2019 06:15:20 -0600 Looking at the map (http://telerover.com/rockets/NCR/NCR_NPawneePropertyOwners.pdf), east is actually relatively clear. To the north is the property people kept hitting last year.

]]> e8adafd5ddd4e42db382f5de26ba067c Chris LaPanse replied to the topic "High altitude winds" - https://dev.ncrocketry.club/about-us/activity/p/14750/ Tue, 09 Jul 2019 06:15:19 -0600 80 knots is not bad (seriously). I’d forego the drogue chute, just breaking in half… which is how I always do it anyway.We need to stay off the private property this year…I don’t like foregoing the drogue – it leaves…   Read more»

]]> 988f844868190a2b2ffba874e3352a24 Chris LaPanse replied to the topic "High altitude winds" - https://dev.ncrocketry.club/about-us/activity/p/14743/ Tue, 09 Jul 2019 06:15:18 -0600 Yep – I’ve been using both that site and weather.com, and they both seem to agree that on Saturday, we’ll be on the edge of the jet stream. Oh well – as long as I don’t dump the main at…   Read more»

]]> 5d31fb6d8662a95889ed7d25a77bbd03 Chris LaPanse replied to the topic "54mm L" - https://dev.ncrocketry.club/about-us/activity/p/14738/ Tue, 09 Jul 2019 06:15:17 -0600 Was it the CTI adhesive kit? If so, I know what you mean. The glue that came with my N5800 was a two part glue, but it dried very rubbery, not at all like epoxy.

]]> 4bdeb4febc484505cd8f93d3b05f251b Chris LaPanse replied to the topic "54mm L" - https://dev.ncrocketry.club/about-us/activity/p/14736/ Tue, 09 Jul 2019 06:15:17 -0600 Personally, I’ll use a stick on 75 and larger (especially the longer ones). For 54, even the 6xl, it isn’t really necessary. I’ll also use a stick for airstarts or staging, even the smaller ones (mainly to keep the igniter…   Read more»

]]> 921bd301109ec4d8e3d24759ef72fc1d Chris LaPanse replied to the topic "Launch Condtions for MHM?" - https://dev.ncrocketry.club/about-us/activity/p/14714/ Tue, 09 Jul 2019 06:15:14 -0600 As of right now, I’m assuming it’s a go. I have my motor built (it needed grain gluing, and I wanted to make sure it was thoroughly cured…), and I’m in the process of reassembling my e-bay and recovery system…   Read more»

]]> 591f7bc3ab9e302e06043708730f36b2 Chris LaPanse replied to the topic "24mm Cesaroni reloads" - https://dev.ncrocketry.club/about-us/activity/p/14708/ Tue, 09 Jul 2019 06:15:13 -0600 I just got a bunch from Apogee – I’m looking forward to trying them (the G107 dual thrust looks amazing). To my knowledge, they’re the only CO dealer.

]]> 6a27da7c207d29f6e2a74e736f73d6dc Chris LaPanse replied to the topic "Scott and Warren and the Maytag man (ask Warren)" - https://dev.ncrocketry.club/about-us/activity/p/14671/ Tue, 09 Jul 2019 06:15:08 -0600 That would be interesting if you could find it. I certainly am not that well-versed on interference drag, and I’d love to know more about it.

]]> e2408cbbf74a296959c9be7ed4256355 Chris LaPanse replied to the topic "Scott and Warren and the Maytag man (ask Warren)" - https://dev.ncrocketry.club/about-us/activity/p/14668/ Tue, 09 Jul 2019 06:15:08 -0600 Warren: I’d be curious to see a reference for that (the interference drag). Everything I know about interference drag (which is admittedly not much, but it at least includes the basic mechanism) and boundary layers (about which I know far…   Read more»

]]> 2851afd78867d2e8c67aec2eab888ee1 Chris LaPanse replied to the topic "Launch volunteers" - https://dev.ncrocketry.club/about-us/activity/p/14658/ Tue, 09 Jul 2019 06:15:07 -0600 I’ve really only got one flight planned, and it should go up Saturday morning. Once I’m back from that, I’d be happy to help out in whatever way is needed.

]]> 267e0bae8887455512f5a2d8576ced18 Chris LaPanse replied to the topic "Launch volunteers" - https://dev.ncrocketry.club/about-us/activity/p/14652/ Tue, 09 Jul 2019 06:15:06 -0600 Pad. It took everyone by surprise though, since it did not occur immediately following a launch – it was a couple minutes after one. It must have been smoldering slightly for a while until the wind fanned it just right…   Read more»

]]> 0af00b78dc311f3afa74d8e57487d007 Chris LaPanse replied to the topic "Launch volunteers" - https://dev.ncrocketry.club/about-us/activity/p/14650/ Tue, 09 Jul 2019 06:15:06 -0600 Yep. Not a large one, fortunately, due in part to luck and in part to the incredibly fast response from everyone when the cry of “FIRE” went out. It was probably 10 by 40 or 50 feet before we got…   Read more»

]]> ef5999f73346990cce618a571b2ab599 Chris LaPanse replied to the topic "Launch volunteers" - https://dev.ncrocketry.club/about-us/activity/p/14635/ Tue, 09 Jul 2019 06:15:04 -0600 I’ll do some button pushing. I don’t have a tow-capable vehicle though, so I can’t help with the trailer.

]]> be8886350421bcecaf6af54fa6b8b1e3 Chris LaPanse replied to the topic "RAIN?" - https://dev.ncrocketry.club/about-us/activity/p/14589/ Tue, 09 Jul 2019 06:14:57 -0600 Everyone who has been doing the rain dance, keep going. It’s working:😀

]]> cf21a6d6ab0e6103cb3fd3f6140ecee9 Chris LaPanse replied to the topic "RAIN?" - https://dev.ncrocketry.club/about-us/activity/p/14583/ Tue, 09 Jul 2019 06:14:56 -0600 I was just looking at weather.com, and for the first time in quite a while, the rainfall for this month in Nunn is substantially above average :D(Mile high mayhem, here we come…)

]]> 93dd5233f74d15ff05d321faff8b7b8f Chris LaPanse replied to the topic "RAIN?" - https://dev.ncrocketry.club/about-us/activity/p/14580/ Tue, 09 Jul 2019 06:14:54 -0600 I’m fine with how this is going just about now :DI figure the more rain the better, so long as it’s done by Wednesday or so…

]]> 2852b9a4ce5d97f99cf5789dc38fa2b4 Chris LaPanse replied to the topic "m bird" - https://dev.ncrocketry.club/about-us/activity/p/14541/ Tue, 09 Jul 2019 06:14:49 -0600 Oh, I don’t think there’s any question whose will be more efficient :DMine really couldn’t be considered efficient in any sense of the word…

]]> d59daa64f5bc2088c3a393e691b7548c Chris LaPanse replied to the topic "m bird" - https://dev.ncrocketry.club/about-us/activity/p/14537/ Tue, 09 Jul 2019 06:14:49 -0600 Your fins should be fine. They’re made pretty much exactly the same as mine are (autoclaved 1/8″ carbon core with 2 layers of CF over them, and then mine have a layer of glass just for the finish), and I’m…   Read more»

]]> 3ff8374d56f10d00fc37dadd0a5d2163 Chris LaPanse replied to the topic "m bird" - https://dev.ncrocketry.club/about-us/activity/p/14532/ Tue, 09 Jul 2019 06:14:48 -0600 Out of curiosity, why the M1545 green? The M2020 Imax is more powerful, smaller, and lighter.Oh, and the sim looks fine to me. I’m a bit surprised it isn’t higher, but as long as the site altitude and temps look…   Read more»

]]> 725245f57d93f482b767508cb5ca1ada Chris LaPanse replied to the topic "m bird" - https://dev.ncrocketry.club/about-us/activity/p/14527/ Tue, 09 Jul 2019 06:14:47 -0600 A 75mm large M has a decent shot at >35k. I’d definitely sim it with RASaero and see what it says.

]]> f0d4e1815844c94f02e9f50c0d8c99f9 Chris LaPanse replied to the topic "m bird" - https://dev.ncrocketry.club/about-us/activity/p/14525/ Tue, 09 Jul 2019 06:14:47 -0600 Very, very cool.Is this flyable at NCR, or do you need somewhere like LDRS this year or Black Rock?

]]> 95001b622273bf64cc23cebb478de920 Chris LaPanse replied to the topic "Hartsel and Which Other Club Sites" - https://dev.ncrocketry.club/about-us/activity/p/14494/ Tue, 09 Jul 2019 06:14:43 -0600 SCORE isn’t too bad – it’s a bit over 2 hours.

]]> 47376b6bb968bb13d677f04909a21acd Chris LaPanse replied to the topic "Altimeter hole placement Nike Smoke" - https://dev.ncrocketry.club/about-us/activity/p/14489/ Tue, 09 Jul 2019 06:14:42 -0600 I have tried the white – I flew an I242 in my Nike, and it was a great boost. The video looks fine to me by the way – nice flight. I still need to race you sometime (assuming mine…   Read more»

]]> 15cfbe4647b0da07706bf327ebc5b2af Chris LaPanse replied to the topic "Altimeter hole placement Nike Smoke" - https://dev.ncrocketry.club/about-us/activity/p/14487/ Tue, 09 Jul 2019 06:14:42 -0600 I intentionally made mine pretty simple, so it’s just motor deploy. I didn’t want to have a full electronic deploy or anything. If I were going to make it electronic deploy though, I’d put the E-bay as high as possible,…   Read more»

]]> c2714db7d7791cca13d7260ffbcd5020 Chris LaPanse replied to the topic "Altimeter hole placement Nike Smoke" - https://dev.ncrocketry.club/about-us/activity/p/14485/ Tue, 09 Jul 2019 06:14:42 -0600 Oh, and I’m up for a 4 inch Smoke drag race anytime 😀

]]> 97b334a060d34b3b6844a405425f6f57 Chris LaPanse replied to the topic "Altimeter hole placement Nike Smoke" - https://dev.ncrocketry.club/about-us/activity/p/14484/ Tue, 09 Jul 2019 06:14:42 -0600 The general trends should hold, though you’re right that the pressures used were sea level standard. I would think the same idea would be fine for our site though, since that’s only a pressure difference of 20% or so.(I’d still…   Read more»

]]> c8e939904dd12326e752317802212f53 Chris LaPanse replied to the topic "Altimeter hole placement Nike Smoke" - https://dev.ncrocketry.club/about-us/activity/p/14482/ Tue, 09 Jul 2019 06:14:41 -0600 Since this is an interesting problem, and I had a bit of free time, I ran some rough CFD sims on a Nike (this one is 1/4 scale, but the general trends should be valid for any of them that…   Read more»

]]> 26c7fd94d3209501ce55540b74c33d72 Chris LaPanse replied to the topic "pre-wet airframe when using sleeves?" - https://dev.ncrocketry.club/about-us/activity/p/14466/ Tue, 09 Jul 2019 06:14:39 -0600 Personally, I wouldn’t. It would make it very challenging to get the sleeve on after soaking the tube in resin. What I would do is use a fairly thin, slow-cure epoxy, and really work it into the weave. Spend some…   Read more»

]]> 2ffb337862513960c1427d02c27fc1c4 Chris LaPanse replied to the topic "Who's going to Tripolo Colorado Next Weekend (April 10th)?" - https://dev.ncrocketry.club/about-us/activity/p/14454/ Tue, 09 Jul 2019 06:14:37 -0600 I’ll be there :DMy Nike has a date with a K2045…

]]> 9c01465ef7bb15561d0cd0c91bf50c15 Chris LaPanse replied to the topic "Launch Volunteers & Trailer Towing" - https://dev.ncrocketry.club/about-us/activity/p/14441/ Tue, 09 Jul 2019 06:14:36 -0600 There’s always Tripoli Colorado next weekend…

]]> b2cbeecbafffa9c6806f3f23198810fb Chris LaPanse replied to the topic "Launch Volunteers & Trailer Towing" - https://dev.ncrocketry.club/about-us/activity/p/14430/ Tue, 09 Jul 2019 06:14:34 -0600 I’ll gladly help with button pushing whenever I’m not launching. If the weather’s remotely decent, I’ll have an apogee deploy at 4k+ though, so I don’t know how long I’ll be out hiking. Whenever I do get back though, I’ll…   Read more»

]]> 8f813d81af39e7342c55485f47d413b0 Chris LaPanse replied to the topic "NASA Cato" - https://dev.ncrocketry.club/about-us/activity/p/14405/ Tue, 09 Jul 2019 06:14:31 -0600 My guess is that when a large chunk of fuel hits the ground, it cracks or fragments, substantially increasing the burn surface area and dispersing burning chunks.

]]> 2f7f4804b49c6000375b71af4a5b2b29 Chris LaPanse replied to the topic "Video on shockwaves" - https://dev.ncrocketry.club/about-us/activity/p/14373/ Tue, 09 Jul 2019 06:14:25 -0600 Hard to say, honestly (especially since I don’t remember the event). I’d be surprised if it were mach-related, but it’s not impossible.

]]> 886806891b5e56b92a24b23c5dc4a4c2 Chris LaPanse replied to the topic "Calling all Engineers" - https://dev.ncrocketry.club/about-us/activity/p/14338/ Tue, 09 Jul 2019 06:14:20 -0600 You can figure out the appropriate temperature and pressure fairly easily from the phase diagram of water. The numbers I used before (1000 PSI at 550F) are actually attainable using the heating-only method. Also, given my calculations, you’ll likely need…   Read more»

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