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Ultralight Airplane Workshop
United States
Приєднався 12 чер 2018
The Ultralight Airplane Design and Build channel documents design, construction and repair/restoration of United States Federal Aviation Administration Part 103 ultralight airplanes.
Videos of older models of ultralights being repaired or restored to flight condition will be shown.
The designed and construction of new models of ultralights will be video documented.
There may also be videos of visits to air shows where the intent of the video is to document elements of ultralight aircraft design.
A web page dedicated to the Ultralight Design Workshop can be found at:
www.thumpdataworks.com/ultralightairplaneworkshop
Videos of older models of ultralights being repaired or restored to flight condition will be shown.
The designed and construction of new models of ultralights will be video documented.
There may also be videos of visits to air shows where the intent of the video is to document elements of ultralight aircraft design.
A web page dedicated to the Ultralight Design Workshop can be found at:
www.thumpdataworks.com/ultralightairplaneworkshop
Truss Nose Rib Testing: Part 5
FINALLY there is some actual load testing of the Truss Style Nose rib of the UWS-4. There was a lot of preparation leading up to this test but it was worth it.
Link to the Ultralight Airplane Workshop's books web page, including "Simplified Aircraft Design for Homebuilders""
www.ultralightairplaneworkshop.com/design-copy
Links:
UA-cam Channel: ua-cam.com/channels/uC7MVr2bBUQ-9xQbg0v82Q.html
Patreon: www.patreon.com/ultralight_airplane_workshop
Discord: discord.gg/eTd9ruZpFj
Twitter: Designer1032
Facebook: UltralightAirplaneWorkshop
Website: www.UltralightAirplaneWorkshop.com
FAA AC 103-7: www.faa.gov/documentLibrary/media/Advisory_Circular/AC_103-7.pdf
Xflr5 software: www.xflr5.com/xflr5.htm
OpenVSP: openvsp.org/
Music: www.bensound.com
Disclaimer: If you use any of the information that you see on this video on a project of your own, YOU become the engineer and responsible party for your project. It is possible that miscalculations were made in the production of this video. Since you are now the engineer for your project, you must verify the information that you use.
Link to the Ultralight Airplane Workshop's books web page, including "Simplified Aircraft Design for Homebuilders""
www.ultralightairplaneworkshop.com/design-copy
Links:
UA-cam Channel: ua-cam.com/channels/uC7MVr2bBUQ-9xQbg0v82Q.html
Patreon: www.patreon.com/ultralight_airplane_workshop
Discord: discord.gg/eTd9ruZpFj
Twitter: Designer1032
Facebook: UltralightAirplaneWorkshop
Website: www.UltralightAirplaneWorkshop.com
FAA AC 103-7: www.faa.gov/documentLibrary/media/Advisory_Circular/AC_103-7.pdf
Xflr5 software: www.xflr5.com/xflr5.htm
OpenVSP: openvsp.org/
Music: www.bensound.com
Disclaimer: If you use any of the information that you see on this video on a project of your own, YOU become the engineer and responsible party for your project. It is possible that miscalculations were made in the production of this video. Since you are now the engineer for your project, you must verify the information that you use.
Переглядів: 894
Відео
Truss Nose Rib Test: Part 4
Переглядів 796Місяць тому
Let's assemble the truss style nose rib for the UWS-4 Ultralight airplane to get ready for some load testing. Link to the Ultralight Airplane Workshop's books web page, including "Simplified Aircraft Design for Homebuilders"" www.ultralightairplaneworkshop.com/design-copy Links: UA-cam Channel: ua-cam.com/channels/uC7MVr2bBUQ-9xQbg0v82Q.html Patreon: www.patreon.com/ultralight_airplane_workshop...
Aluminum Flange Setter Tool
Переглядів 2,2 тис.2 місяці тому
There is a way to set a 90 degree flange in an aluminum sheet part and get it almost perfect every time without guessing. Use a Flange Setter tool. Let's make and use one in this video. Link to the Ultralight Airplane Workshop's books web page, including "Simplified Aircraft Design for Homebuilders"" www.ultralightairplaneworkshop.com/design-copy Links: UA-cam Channel: ua-cam.com/channels/uC7MV...
Whipple Tree Analysis and Fabrication
Переглядів 1 тис.5 місяців тому
For testing the Truss Style Nose Rib for the UWS-4 Ultralight airplane, a Whipple Tree is to be used. A Whipple Tree spreads a single load into multiple individual loads. The design of the Whipple Tree allows the individual loads to be customized for the item being load tested. This video covers the analysis to design a Whipple Tree and then the fabrication of a Whipple Tree. Link to the Ultral...
Truss Nose Rib Test: Part C
Переглядів 6306 місяців тому
In this video of a design for a truss style nose rib for the UWS-4, the rib is formed with hydroforming using rubber. Link to the Ultralight Airplane Workshop's books web page, including "Simplified Aircraft Design for Homebuilders"" www.ultralightairplaneworkshop.com/design-copy Links: UA-cam Channel: ua-cam.com/channels/uC7MVr2bBUQ-9xQbg0v82Q.html Patreon: www.patreon.com/ultralight_airplane_...
Truss Nose Rib Test: Part B
Переглядів 4546 місяців тому
It is time to get out into the shop and start making sawdust and aluminum chips for the aluminum truss style nose rib of the UWS-4. In this video the template for cutting out the rib is fabricated and then the aluminum rib is cut out. Link to the Ultralight Airplane Workshop's books web page, including "Simplified Aircraft Design for Homebuilders"" www.ultralightairplaneworkshop.com/design-copy...
UWS-4 Aero Design: Forward CG, Part 13b
Переглядів 4467 місяців тому
In this video we switch from the most aft CG to the most forward CG to determine the tail size for the UWS-4 Ultralight Airplane. Which ever is biggest wins. Link to the Ultralight Airplane Workshop's books web page, including "Simplified Aircraft Design for Homebuilders"" www.ultralightairplaneworkshop.com/design-copy Links: UA-cam Channel: ua-cam.com/channels/uC7MVr2bBUQ-9xQbg0v82Q.html Patre...
UWS-4 Aero Design: Pitch Stability, Part 13 a
Переглядів 4648 місяців тому
In this video we will take a look at the Pitch Stability of the UWS-4 Ultralight Airplane. This is the next section in the book we are using to aid in the design of the UWS-4, "Simplified Aircraft Design for Homebuilders". Link to the Ultralight Airplane Workshop's books web page, including "Simplified Aircraft Design for Homebuilders"" www.ultralightairplaneworkshop.com/design-copy Links: UA-c...
Truss Nose Rib Test: Part A
Переглядів 6588 місяців тому
Since we did some testing on a cantilever style nose rib, lets try a truss style nose rib. In this video the design of the truss style nose rib for an ultralight airplane is discussed. Link to the Ultralight Airplane Workshop's books web page, including "Simplified Aircraft Design for Homebuilders"" www.ultralightairplaneworkshop.com/design-copy Links: UA-cam Channel: ua-cam.com/channels/uC7MVr...
UWS-4 Aero Design: Weight and CG Estimation, Part 12 C
Переглядів 4999 місяців тому
In this video the estimated position of the the Center of Gravity (CG) of the UWS-4 Ultralight Airplane is estimated using the software tool OpenVSP. Link to the Ultralight Airplane Workshop's books web page, including "Simplified Aircraft Design for Homebuilders"" www.ultralightairplaneworkshop.com/design-copy Links: UA-cam Channel: ua-cam.com/channels/uC7MVr2bBUQ-9xQbg0v82Q.html Patreon: www....
UWS-4 Aero Design: Weight Estimation Part 12 B
Переглядів 3749 місяців тому
With Part B if the little video series on the UWS-4 Ultralight Weight Estimation we modify the Aero Commander weight estimation rules for aluminum airplanes in order to more accurately estimate aluminum ultralight weights. We then get the first estimate of the empty weight of the UWS-4. Link to the Ultralight Airplane Workshop's books web page, including "Simplified Aircraft Design for Homebuil...
UWS-4 Aero Design: Weight Estimation Part 12 A
Переглядів 5319 місяців тому
We are now at the point in Dan Raymer's book "Simplified Aircraft Design for Homebuilders" book that we can make the first estimate of the weight of the UWS-4 Ultralight Airplane. In this case will choose to use some equations for the weight estimation of the wing, horizontal tail and vertical tail. In this video we will take a look at these equations to try to understand them because we will m...
UWS-4 Aero Design: Revision Part 2
Переглядів 7389 місяців тому
This is the continuation of the UWS-4 Ultralight Airplane revision that was started in Part 1. In this Part 2 I'll talk about changes to the wing planform and airfoil and possible enhancements to the fuselage changes discussed in Part 1. Link to the Ultralight Airplane Workshop's books web page, including "Simplified Aircraft Design for Homebuilders"" www.ultralightairplaneworkshop.com/design-c...
Cantilever Rib Portion Test: Part C
Переглядів 61610 місяців тому
Since we've done some testing for parts of a cantilever nose rib, it is time to test a full cantilever nose rib. Can this rib handle the 3.8g load of 75 lbs and then the extra 1.5 load factor? Link to the Ultralight Airplane Workshop's books web page, including "Simplified Aircraft Design for Homebuilders"" www.ultralightairplaneworkshop.com/design-copy Links: UA-cam Channel: ua-cam.com/channel...
UWS-4 Aero Design: Revision Part 1
Переглядів 1,9 тис.11 місяців тому
After a lot of consideration and an informative trip to Oshkosh, it was time to make some aerodynamic design changes to the UWS-4 ultralight airplane. In part 1 we talk about changes to the landing gear, tail and cockpit area of the ultralight. Link to the Ultralight Airplane Workshop's books web page, including "Simplified Aircraft Design for Homebuilders"" www.ultralightairplaneworkshop.com/d...
Tour of Camp Scholller, Airventure 2023, Oshkosh WI
Переглядів 5 тис.Рік тому
Tour of Camp Scholller, Airventure 2023, Oshkosh WI
Road trip to Airventure 2023, Oshkosh, WI.
Переглядів 95Рік тому
Road trip to Airventure 2023, Oshkosh, WI.
Cantilever Rib Portion Testing: Part B
Переглядів 1,1 тис.Рік тому
Cantilever Rib Portion Testing: Part B
Can an AI design an Ultralight Airplane?
Переглядів 1,3 тис.Рік тому
Can an AI design an Ultralight Airplane?
UWS-4: Instrument Panel Thoughts, Part2
Переглядів 194Рік тому
UWS-4: Instrument Panel Thoughts, Part2
Does an Ultralight Airplane need a parachute?
Переглядів 1,6 тис.Рік тому
Does an Ultralight Airplane need a parachute?
Cantilever Rib Portion Testing: Part A
Переглядів 1 тис.Рік тому
Cantilever Rib Portion Testing: Part A
UWS-4 Struct Design: Rib Skin Rivet Locations , Part 2a
Переглядів 953Рік тому
UWS-4 Struct Design: Rib Skin Rivet Locations , Part 2a
Wing Skin/Flat Panel Compression Limit
Переглядів 2,6 тис.Рік тому
Wing Skin/Flat Panel Compression Limit
UWS-4 Struct Design: Ribs Part 1, Ultra Cruiser Ribs
Переглядів 3,3 тис.Рік тому
UWS-4 Struct Design: Ribs Part 1, Ultra Cruiser Ribs
I love your detailed review of the testing methods and expectations along the way indicating where the reliability of the tests are limited. This is a great video on the forensics as well. Thank you Leon for putting this together
it would be nice to see a video on the Design of the press table once it's done. something like that would be really helpful to people who otherwise see formed parts as too costly. it might help people make other things more affordably and open up new avenues to them.
This is a critical aspect of aircraft design people almost never show. sure, we see full wing assembly load tests, but not individual component testing, and definitely not a test like this with nonuniformly distributed loads on small parts and small sub assemblies. Thank you for doing this and sharing it.
can you elaborate the formula used for Schrenk Span Dist.
Is it possible if you can share the dat file of your aerofoil?
YAY! CONGRATULATIONS on this fantastic test Leon! 🎉
The Scholler's are my kin, and from Oshkosh.
The only real test that needs to be applied in connection with any "ultralight" is whether your life insurance policy is paid up.
Great video showing all the steps. Thank you for not using time lapse - with this you often can’t see what is actually happening. And also thank you for not adding distracting background music.
Can't wait to see how this does in testing.
Excellent video detailing the fabrication steps and process, including all the little steps and details others gloss over.
Great idea and video! Would it be possible to account for the extra 8-11° in the original press form?
Allo , I am trying to find that surface primer in your video. Can you tell me where it can be purchased, Question; This stuff can be sanded to make Styrofoam smooth for a mold creation, yes? Thats what i need/looking for Thank You for any suggestion & this nice video
Google search for "Duratec 707-002 Grey Surface Primer" I got tons of results.
55 onot limit on max speed alonf with the 254 lb weight limit are some of the stupidest regs ever introduced by the FAA. STALL APEED IS perfectly acceptable byt the weight limit just invited fragile construction.
you could use a mylar film on the table as a release agent instead of the PVA, leaves a super smooth finish
That turned out beautiful! What material are the blind rivets? What diameters were the rollers that you used to form the skin? Thank you for the jump cuts! 💖 Sped up footage also works if that's easier in post 😉
WOW!!! GREAT IDEAS, LEON!! THANKS, FOR SHARING!!!
Another question for those that have had their RV's there for more than a few days. I see you can pay for a mid week on site pump out service, but there is also a dump station. Is it practical to put in slides and just drive over and dump tanks, refill water mid week and get back to site to finish week or is it always a huge back up and too much pain. Can be later in day when arrivals are slow, just an idea so we dont need to spend a fortune on on site services. Thanks
Really great analysis for the above average home builder. It would be great if you could do mathematical structural analysis for wooden aircraft, and for the wing section from the root to the wing struts. Also one for wire braced biplane wings
Thank you for all your videos you’re cool
What you’ve done creating the initial form is excellent but you need to be aware of a tool known as a “shrinker”. Also, the proper hammer and dolly technique can accomplish the same thing but is more of an art whereas the shrinker is a simple sheet metal tool.
Does it mean the normal flow media is too fast or absorbs too much resin or something vs the insect screen?
You have no idea how impotant this video was for me. ♥♥♥♥♥♥♥♥
Thanks so much for posting this- VERY informative for us rookies! 🤠
Hello I think that you have made a mistake in the chord calculation equation
Thank you!!!!!
Thank you for these videos very much!
If you cut a hole in the base plate under the 'R' you could have a bar run down to a foot pedal. With a little extra geometry, that could also power the compression for the bend. Much like a shrinker/stretcher in automotive body work.
So, given how much time you have spent forming this style rib, do you think this is still faster than building the rib similar to multipart Ultracruiser rib?
I'm loving your content, I'm interested in developing an ultralight myself. I want to replace a wood and fabric wing design with aluminum and fabric. Have you read "Sheet Metal Building Basics" from the EAA store? If not you should, lots of great information well presented. In this video you mentioned using 1/8" rivets through 0.016" skin. This is too large a rivet for the skin thickness. Chapter 19.4 states that the rivet diameter to thickness ratio should be no greater than 5.5, otherwise the expanding rivet will locally distort and buckle the sheet. For 0.016" sheet the largest diameter rivet that can be used is 1/16". See Table 2 on page 19-4. I have not been able to find 1/16" pull rivets so it will be necessary to use solid rivets. One other comment. A downside of starting with a large sheet, bending it, and cutting out lightening holes is that it results in the most scrap so it adds considerable cost (the need to buy more raw material for the same end result). While I agree that the 5 piece nose requires making more parts and using more rivets to assemble them, the parts start as straight rectangles that then get bent into shape so there is much less scrap from the raw materials. If solid rivets are used they are cheaper, lighter, and stronger than pulled rivets, but they do require different tools and learning the techniques to install them. If your ultralight is going to be primarily aluminum then the one time cost of the tools will be small compared to the number of rivet you will need to set so using solid rivets where ever possible will ultimately cost less, be stronger, and weigh less.
Very cool! Thank you for sharing this. My experience with hydro-forming is that, yes, different thicknesses will definitely have different springback angles. For a given alloy and heat-treat, thinner metal is springier and needs to be over-bent more, while thicker metal is less springy and will come closer to just staying where you bent it. This makes sense if you think about it; When you bend something thick, the stresses that you put on the outer and inner surfaces are much higher (i.e. more yielding will happen) than when you bent something thin, if you think of it in terms of "beam height". Anyways... I'm a huge fan (currently also developing my own ultralight), please keep up the great work!
Oh, and: The bend radius will also impact the springback. Again, think about stresses in beam-bending: A sharper radius will cause higher stresses and more yielding (so, less springback) than a wider radius (which would therefore need to be over-bent more).
I wonder if you stuck something like a ring sizing mandrel on the outside or " feeder" side, it would take a flat slat and begin the curve on a consistent basis.
Thank you
Thank you
Thank you for all work and dedication. Highly appreciated !!
7:29 I’m noticing that the laminar airfoil also appears to reverse its curves near the trailing edge so that the reuniting streams have a closer angle once they rejoin, probably inducing lower drag, perhaps similar to the effect winglets have.
Usually fly in and camp with plane, this year driving our "other rv" and have a decent solar set up, think we can live without air. I know the generators just scream, even in the just till 10PM areas, so thinking of our 32' rv parking in no genie area? Thoughts, think that would be a mistake? Sure would enjoy not hearing genies, thoughts?
We're driving our 22' class B. It has 300W solar and an under-hood generator. We're planning on parking in the non-genny area. I don't know what's gonna be left when we get there on Thursday the 25th.
I camped in a tent in the general camping area last year. My neighbors in the RVs on either side only used their generators for an hour or so in the morning and while cooking dinner in the evening. Everybody was very respectful with regards to the generator curfews. Although somebody a street up was running their generator 24/7 when they were not suppose to.
@@kenwilkerson1043 Spots will clear out on Thursday as some people leave after the night air show on Wednesday. I was there for the full week and had a few neighbors on the south side of my tent throughout the week.
Unnecessary part's and labor.
what are the design considerations required to design horizontal stabilizer in helicopter
You could have used bondo instead of drywall once you had the fiberglass over the foam. (I think bondo will attack bare foam).
For anyone watching, amine blush is water soluble. Use ample water and a mild abrasive (like a scotchbrite scrubbing pad) to remove it before sanding. Don't use alcohol or acetone or other solvents.
When you talk about maintenance these 2 stroke engines can fail very easy and also you may have a new engine but there could be a flaw with the metal use in the engine and it fails . I have seen ultralight aircraft were the wing brackets had big scratches in the corners I fixed it and the brackets that hold the rudder peddles on had 3/16 pop rivets in 1/4 holes and it was loose had to fix that and a few other things . Been an engineer if you have to do maintenance have a full check list record the maintenance and always every few month contact the manafacture or some that has the same plane and ask of any problems they have come across . And the way I see it I’m going to build an ultralight and I’m putting a parachute so there is the protection should something go wrong
I take it this video was taken the Sunday before the start of the airshow, right? People are coming in looking for spots, first come, first served on that Sunday?
hi. by any chance, do you have forum or group for ultralight design maybe on discord or something? thanks in advance
Given then number of changes you want to make/have made, are you going to build a 2nd model or re-build the first model to verify the changes or just assume they will be good?
this rocks! i didnt know you could use safety wire for this purpose
Add a turnbuckle to the tension cable or easier adjustments, and relieving tension for storage.
As you have intent to paint, instead, in your glass smooth mould, paint two layers of gelcoat in your desired color, then a 90gsm cloth, then two 200gsm, then a core with built in flow channels, then two layers of 200gsm.
Thanks a lot man
Great job but can you explain permitted and not permitted