In case it is helpful, here are all the Wind Tunnel videos in a single playlist kzbin.info/aero/PLxdnSsBqCrrEbjML0UneRVLn8YDoxql-i. All the Flight Mechanics videos in a single playlist kzbin.info/aero/PLxdnSsBqCrrEx3A6W94sQGClk6Q4YCg-h. You can support this channel via Patreon at www.patreon.com/christopherwlum. Please let me know what you think in the comments. Thanks for watching!
@RWIKDGR8RANA7 ай бұрын
AA 516 : really awesome explanation and glad such a system and setup exists at UW
@WalkingDeaDJ4 ай бұрын
Jason-AE512: This video provides an excellent foundation for understanding the basics of wind tunnel testing. It clearly explains how data is collected, emphasizing the importance of setup and instrumentation, which is crucial for beginners.
@SayedTorak4 ай бұрын
AE 512: Thank you for the detailed walkthrough of the wind tunnel. I always wanted to visit there during my undergrad but never got the chance to do so.
@reesetaylor35064 ай бұрын
AE 512: Walked past this building everday for 3 years and never had the chance to go inside, thanks for the virtual walkthrough!
@ChristopherLum4 ай бұрын
I know, there are several buildings on campus that I never know what is going on inside :)
@zaneyosif4 ай бұрын
AE512: Interesting to see a different wind tunnel compared to what I experienced in undergrad. Very nice feature of the real time plotting!
@eeproflady1522 Жыл бұрын
Chris, I showed this to my HS engineering class. It's EXCELLENT! They are inspired to build a small wind tunnel for 3D printed prototypes. Thank you so much for making great content.
@ChristopherLum Жыл бұрын
Haha, that is great, I'm glad it was useful. You probably have some stories to share on this front also, right? Are you going to be making more videos? I saw your video on root finding using Matlab, good stuff!
@jordantriolo5714 ай бұрын
AE512: Interesting to see the variety of data and objects tested in wind tunnels
@kurtcobainsr3 жыл бұрын
This is great! Been waiting for this video to come out! Cant wait to see more Flight mechanics videos in the future!
@ChristopherLum3 жыл бұрын
Brian, great, thanks for waiting for it 😀. I hope to have the next two parts of this series out in the next two weeks. Hopefully I'll see you at a future video. Thanks for watching!
@edwardmau58774 ай бұрын
AE 512 Didn't know how much historical data has been kept, pretty cool.
@petermay60907 ай бұрын
AA516: Cool to have an inside look at how the Kirsten wind tunnel works!
@technontechwithsumitohdar932 Жыл бұрын
Thanks won't be enough the way you teach........infinite thanks to you......one request professor if u can make video on virtual wind tunnel.....it will be highly appreciated..
@ChristopherLum Жыл бұрын
Hi, Thanks for reaching out. If you have questions or would like to request a video, I hope you'll consider supporting the channel via Patreon at www.patreon.com/christopherwlum or via the 'Thanks' button underneath the video. I'd love to have you as a Patron as I'm able to talk/interact personally with Patrons. Thanks for watching! -Chris
@BryanLiberman-cq4ml4 ай бұрын
AE512: Thanks for the video! Loved the little shaoutout of you in the original wind tunnel video!
@chayweaver.29953 ай бұрын
AE512: Cool to get to know more about how wind tunnel testing works
@Kumky6056 ай бұрын
AA516: Forgot to comment on this when I watched it the first time but great explanation and nice to see behind the curtain of windtunnel testing
@rowellcastro26837 ай бұрын
AA516: 11:32 oh wow, our class went through the tunnel last year for one of the labs and I didn't even notice how small the clearance was. It would've been interesting to look at blade tips more closely.
@rishabhjaiswal2903 жыл бұрын
Sir I go through all your lectures on Flight ✈️ Mechanics ........best videos series on KZbin.....Thank you so much....... waiting for next two videos.
@ChristopherLum3 жыл бұрын
I'm glad it was useful. The next video just went live, feel free to check it out and let me know what you think. Thanks for watching!
@daniellerogers5959 Жыл бұрын
AA516 - cool to see the framework build up given the geometry needed for the UW wind tunnel and all the considerations to setup the model properly to get quality data.
@helmutk.41783 жыл бұрын
Hi Christopher, thank you for your video. I am excited to see the following ones. I love the idea that you show how you get the aerodynamic data, required for designing a flight control. What I am missing here is a really important topic: Mach number and Reynolds number. If I want to match the mach number I have to change my reynolds number according to the right flow conditions. This is the reason why sometimes you have cooled wind tunnels. I think an example with a simple calculation would be helpful for everybody.
@ChristopherLum3 жыл бұрын
Helmut, thanks for the great comment. You are indeed correct, playing with scaling, Re, and Mach number manipulations all at the same time requires clever engineering solutions. I've tested at pressurized tunnels to get around some of these. We'll be looking at an example calculation in the next video. If you are subscribed hopefully you'll be notified when it goes live. Thanks for watching!
@helmutk.41783 жыл бұрын
@@ChristopherLum Your channel is awesome! I would have liked my professors to explain it this way too. Instead, they just derived the formulas mathematically and the whole blackboard was full of math, nobody really understood. This is why it is so important to get practical examples like you do. Great Work!
@wrightmf7 ай бұрын
Is the electronic pressure scanner a Scanivalve product? JC Pemberton, a Boeing engineer, developed the Scanivalve mechanical pressure scanner in 1950s. This was the high tech item that replaced manometer boards, and wind tunnel facilities embraced these awesome devices. JC left Boeing and founded his company Scanivalve. Years later the company developed electronic pressure scanners (ZOC) that are commonly used along with internal strain gage balances.
@aimeepak7174 ай бұрын
AE512: Keeping data dating back to the 1930s in a vault was a fun fact!
@EomjiKim7 ай бұрын
AA516: I haven't been to the wind tunnel place of uw yet but it was interesting to have virtual tour through your video
@sianhoan833 Жыл бұрын
AA516: Always excited to learn about wind tunnel! I was amazed when we got to tour KWT and go in its test section for a Junior lab.
@ChristopherLum Жыл бұрын
Yes, it is pretty neat to stand in the test section and look at the bellmouth!
@sethwhittington282 жыл бұрын
AE512: Great intro to wind tunnel testing! Not a field I have any experience in.
@ChristopherLum3 жыл бұрын
I'm glad it is helpful. I hope you'll watch the other two related videos. Please let me know what you think about them and how it translates to your tunnel.
@ammardalati5103 жыл бұрын
thank you! i am a student at CSUF and this is helping me at ours
@anna-nimura-yates Жыл бұрын
AA 516: I always thought it was really cool that we have such a large wind tunnel on our campus! If at all possible, it would be fun to potentially incorporate some sort of lab or final project in the future in 516 where we get to test a build in a wind tunnel.
@ScholarlySpace11 ай бұрын
What's AA 516?
@shavykashyap7 ай бұрын
AA516 : Very cool !
@kinfongyeung54008 ай бұрын
having your department named after the founder of Boeing is such a giga flex
@hasanhorata83812 жыл бұрын
AA 516 - Pretty cool to see this thing. I had the opportunity to sit in on an experiment during this past summer in the KWT. It was pretty cool seeing when you could see when it became turbulent and flow separation on the china clay
@ChristopherLum2 жыл бұрын
Hasan, that is great, what type of test were you conducting in the tunnel? Did you get a chance to do any data reduction?
@hasanhorata83812 жыл бұрын
Unfortunately, no data reduction. I just sat in on them doing wind tunnel experiments. They were testing different airplane configurations to look at new supersonic plane designs
@yormanjorcetquispechavez33303 жыл бұрын
Hi Christopher, your videos are spectacular. You are a brave of braves. God bless you dear, please could you share the video of the second part since it says it is deleted in order to understand better ... blessings.
@ChristopherLum3 жыл бұрын
Hi Yorman, the second video should be up and available. Where did you encounter the message saying it was deleted? If you let me know and I try to track down the incorrect URL and fix it, thanks.
@yormanjorcetquispechavez33303 жыл бұрын
@@ChristopherLum Please could you put a Spanish subtitle on the video you posted a few hours ago, please greetings from PERU
@adrianjeromegujilde30113 жыл бұрын
I have subscribed to your channel. You have great lectures. You teach excellently. I cant wait for the next 2 videos. Is it possible to have it in less than two weeks? please? :(
@ChristopherLum3 жыл бұрын
I'm glad it was useful. The next video just went live, feel free to check it out and let me know what you think. Thanks for watching!
@ThomasNiemisto2 жыл бұрын
AE 512: Very impressive that this wind tunnel has seen over 80 years of service. Can't think of many other things that have lasted that long.
@ChristopherLum2 жыл бұрын
Yeah, it is pretty neat although there have been a few upgrades since the beginning (they used to take data using analog/manual techniques).
@boeing797screamliner3 жыл бұрын
AA516 - great video. I loved working with the wind tunnels during my undergrad, even though they were nothing compared to Kirsten. I hope I'm able to go to campus soon and check it out
@ChristopherLum3 жыл бұрын
Gary, that is great to hear. Where did you work with wind tunnels in the past? What types of experiments did you run?
@boeing797screamliner3 жыл бұрын
@@ChristopherLum I did my undergrad at UT Austin; I worked with our subsonic and supersonic wind tunnels. The experiments were for class and all involved testing various shapes and aircraft models. Off the top of my head, I recall doing flow vis (smoke, oil, and tufts), pressure measurement, and Schlieren imaging, among a few others. I was always the person eager to run the wind tunnel and do all the hands-on work!
@ChristopherLum3 жыл бұрын
@@boeing797screamliner Nice, that is good to hear. Wind tunnels are a lot of fun and surprisingly they are still very relevant even in the age of CFD and numerical techniques.
@PatrickGalvin5197 ай бұрын
AA 516: When you worked at the KWT, how often were parts dislodging from models? If a part dislodged and did significant damage, is that something the customer would be financially liable for?
@ChristopherLum7 ай бұрын
This didn't happen often (I saw it maybe once or twice). There are several safety mechanisms in place to prevent the part from making it all the way back to the fans. This is partly the responsibility of the tunnel to make sure the models are sound before turning the wind on.
@Indefinite872 жыл бұрын
can you explain rod type internal wind tunnel balances?
@burningbush20092 жыл бұрын
AE512: Great video! Is the Kirsten wind tunnel unique in its very low flow angularity? Or are those pretty standard values for a large wind tunnel?
@ChristopherLum2 жыл бұрын
Hi Ryan, the flow angularity correction is going to be different for different tunnels. They obviously are shooting for zero cross flow and upflow but it is really hard to make this happen.
@ahungryflyer2 жыл бұрын
AE512: I find it amazing that the external balance assembly has remained largely as-is since the tunnel's inception. Have there been any required upgrades or major overhauls completed in the time you were with UWAL? I'd imagine any new parts would have to be fabricated in-house, right?
@ChristopherLum2 жыл бұрын
There have definitely been a few upgrades since the beginning (they used to take data using analog/manual techniques, AKA looking at dials and writing things down).
@Gholdoian4 ай бұрын
AE 512: Very interesting that mahogany wood was used for the propellers vs. metal or composites. I would think these would be better for their durability and lower likeihood of FOD in case of a part strike?
@ChristopherLum4 ай бұрын
FOD is a big worry as as a shed part can damage or destroy a fan blade. There is a kill switch and a person whose job is to watch the model during a run and if they see something fall off the model they hit the switch ASAP
@marcosszmania58742 жыл бұрын
AE 512: Hey Professor Lum, I did not understand what the 100 Hz for 5 seconds represent, could you elaborate on that? Thank you.
@ChristopherLum2 жыл бұрын
Hi Marcos, this is just an arbitrary data sampling rate and duration that this particular wind tunnel uses. This effectively means they take 500 data points (100 Hz * 5 seconds) and then average these 500 points to get a single data point for that condition.
@patrickfollis94172 жыл бұрын
AA 516: Does the 3x3 wind tunnel at UW follow the same general data acquisition process? Are there any major differences/considerations for using it because it is smaller and generally lower speed?
@ChristopherLum2 жыл бұрын
Patrick, great question. In short, no, I don't believe the 3x3 has the same corrections. You may want to check with Prof. Knowlen or Williams as they might know if there are actually any corrections being applied to the data for the 3x3 tunnel.
@patrickfollis94172 жыл бұрын
@@ChristopherLum Thanks! My capstone group will likely be using the 3x3 tunnel so we will look into it
@davidtelgen81144 ай бұрын
AE512: Looks like a fun undergrad job, hopefully they don't make you inventory all the old records!
@ChristopherLum4 ай бұрын
I know, it is a bit of a mess down there. I shudder to think how they would actually find data if they needed to go into the archives.
@bsgove3 ай бұрын
AE512: I hope one day I get to use KWT!!
@ojasvikamboj6083 Жыл бұрын
A A 516: Ojasvi Kamboj
@edengebretsadik77934 ай бұрын
AE512
@yaffetbedru66127 ай бұрын
AA516
@shavykashyap7 ай бұрын
AA 516
@user-tx1kz3lo1p7 ай бұрын
AA516:Po
@rwikrana7 ай бұрын
AA 516 : really awesome explanation and glad such a system and setup exists at UW