Your videos have reminded me of my love for RC Flight. I used to love going to watch people flying. Wanted to get into it myself, but life got in the way. I think I might have to pick up a versa wing trainer after the holidays. Thanks for doing what you do.
I already have as I have t gotten my first plane yet but with my taxes in a month or so I'm gonna get the carbon cub S I'm not new into RC hobby just planes used to race RC cars 15yrs ago
I started with a simulator, and it has probably saved me hundreds of dollars worth in crashes by now. It is indeed really helpful to start with one. Love this series.
It's important to remember that when you stall you can't use ailerons since the airflow breaks away from the wing. Always use the rudder when stabilizing in a stall on the roll axis.
Guys your videos are excellent. I am a trainer/instructor at my flying club and your vids are proving to be an invaluable training aid to newby flyers. Well thought out easy to understand explanations and fun to watch while learning. Keep em coming.
I'm from nz. An haven't flown rc for forty odd years. Thought I'd try again an bought a 1400mm 182 cessna. RTF. Found your site an joined, Your beginner series is brilliant so can't wait to watch them all. At the mo I've got lots of questions. But I'll watch an see your posts. Even us old farts can still learn. Thanks youngsters..!!
I’m new to it all I am 30 years old and enjoyed this series. Thank you I am going to get into this hobby. I will order a simple starter on your website. GOD BLESS
So what plane did u go with as a beginner?? I was thinking about carbon cub S RTF or the EDF f16 BNF with a spektrum dx8 transmitter Ive never flown but raced rc cars 15yrs ago I know it's not the same or close but I looove military fighter jets and will eventually get one so might as well get it even though I haven't flown cause it has safe mode and 3 different modes on the eflite f16
Josh, you need to watch yourself on the replay and count how many times you interrupt. We all have a tendency to want to speak whatever is on our mind and think that it is more important than what someone else is talking about. Thanks for the videos, you have convinced me to get into R/C
Lol I have been doing this hobby for 3 years and I know they are called elevons but I like to call them ailervators still! Great tips guys! really good stuff for learning about RC planes! I have watched you guys for the 3 years I have been in this hobby and you guys have helped me all the way! Thank You!
Great information. I started flying back in February so of course I have moved past some of this but I will still watch every episode to see if I have missed anything. I appreciate you keeping it basic. I think you have found a good mix of between good information provided simply. I would love you to do a series after this on Intermediate RC flight. Show principles and how to's for basic acrobatics, flying off of water etc.
As an aerospace engineer, I can assure you that lift is actually caused by both design camps, but mostly from the Bernoulli Principle. This is evidenced by the under-cambered wing, which takes full advantage of both the Bernoulli Principle and directing some airflow downwards to take advantage of Newton's Third Law. Also, It's actually possible (in fact required when building actual aircraft) to calculate the total lift at all attitudes of flight, and that requires knowing all the forces on the plane that are generating lift and how much of the total lift they are generating.
+Jacob Bauer sir, would you be willing to help me in my extended essay on aerodynamics? I am doing it on paper planes and just need a couple of ideas for it. hope to receive your reply soon! Thanks!
As an aerospace engineering student, I can assure you that the Bernoulli Principle is incorrect for the simple reason that airflow doesn't have to, and usually doesn't meet at the end of the wing. They don't have an appointment and there's no physical law implying they should. Though it doesn't matter for tutorial videos like these, it isn't actually a correct explanation on how wings generate lift.
Each time with a sinking heart watching your show! You guys are awesome! Maybe you'll come to Russia someday and create one of the episodes. I will be glad to help you.
Great video. Remember guys a wing can stall at any airspeed, as a stall is related to AOA, and when an AOA is exceeded the airflow can become unstuck and cause a stall.
Long time first time big fan. I know 3chan is your recommendation for beginners, but you only talk about how rudder affects yaw and not how yaw effects the differential speed and differential lift at the wingtips causing roll. The concept of how a 3chan airplane rolls with only rudder input takes a bit more explanation for new pilots. Great video and keep up the good work!
Great video, I'm certified to fly but these videos are brilliant, I wish you guys had been there when I was learning, would have made it so much easier (and cheaper). I have no doubt this series of videos will help a lot of people get into the hobby without spending a huge amount of money and time crashing (you will crash at some point). The high five rule is a great idea, I use it every pre flight and it has saved atleast one plane that I had not setup correctly. High 5 Flitetest, awesome!
Thank you for Sharing, I am just getting into planes, I got the super cub S. I dig it so I've been watching your series I'm beginning flyers I will watch over and over till it takes I am going to learn to fly it. I'll be watching for more info
you can leave it out, but it will probably fly better if you hook it up with the aileron channel. right stick side to side. that way the rudder and ailerons work together. this helps offset aileron differential drag, a side effect of ailerons causing yaw in the wring direction when the ailerons are applied. the higher the aspect ratio of the wing, and the farther out the ailerons are the more it will affect the plane. the cessena could prob live without the rudder, but you will notice it.cheers
Nice Video! I would recommend flying with mode 1. There you have the elevator and the aileron separated from each other. This prevents not steering the ailerons while you use the elevators. In my opinion this would be better for beginners.
Great vid guys. There doesn't exist two camps, only the informed and the uninformed. What Bernuolli's principle describes is the phenomenon that occurs due to Newton's principle. The air is accelerated downwards by means of airspeed and angle of attack / airfoil and this generates a counterforce (lift). The dispute between the Bernoulli / Newton-principle concerns the inability to distinguish between cause and effect.
And that is why most people think this is so hard to learn, since even a simple explanation like yours, made with the best intentions is pretty difficult to understand at first sight.
mjmqubesi the leading edge is closer to paralel to airflow than the "end" of the wing. overall the air is pushed down under the wing. as long as the wing is more curved over the wing than under it is making an underpressure, the point is just choosing the best compromise drag/lift wise. this is why you never see a flying L, it has a useless amount of drag. the tiny curve back in the day isnt much to talk about, but it is better than a flat wing.
For a slow flyer, I believe a high lift, low Reynolds number airfoil will be the best. Combine this with the right angle of attack and it’s gonna be fun. I’m working on a project where I’m trying to resin 3D print an indoor flyer but I have minimal experience in RC airplanes but I can fly little Cessnas. But also a little advice, research on how high you can fly in your area with your RC airplane since you need a license to fly it above a certain altitude, more about this can be learned by checking out FAA Part 107 Certification.
You guys make some great beginner videos for RC aircraft. I'm planing on designing my own plane (a "scratch plane" is what you called it, right?), and these videos have helped me a lot. I would, however, like to point out that some of your theories of lift are incorrect/partially correct. (The following points are guided by college classes I have taken.) The equal transit time theory you mentioned has been proven false. A perfect example of this is actually some of the cambered airfoils you talked about, especially the cambered plate airfoil on the small orange plane you held up. If the plate is super-thin, the length of the top and bottom sides are basically the same, but the cambered plate can still generate lift. Also, the "Newton's Third Law" concept mentioned in the video is incorrectly described. Air doesn't just bounce off a surface and transfer momentum like that. Admittedly, the correct explanation is extremely complex and is nothing less than college-level material (If you are interested, the correct mathematical description of Newton's Laws for fluid dynamics are the Navier-Stokes equations, which are multi variable vector calculus equations that combine Newton's Laws, the conservation of mass principle, and the conservation of energy principle). Nevertheless, I like this whole video series, and have learned a lot. I wish the producers and all involved in this channel good luck.
Nice queen reference! Love it! Thanks for helping people like me get into the hobby I’ve had a mini aprentence s and just ordered a mini Corsair from ur guys website!
AMAZING! VERY EDUCATIONAL, THANK YOU VERY MUCH, MY HAT OFF TO THE GUYS THAT MADE IT POSSIBLE, ( I CALL THEM THE JOSHES) WITH ALL DUE RESPECT OF COURSE!!
Actually, the elevator changes the angle of attack (look it up) of the wing. The higher the angle, the more lift (to a point) the wing generates, causing the plane to climb. There's a lot more to aeronautics than meets the eye, but it all makes sense. and it's actually fun to learn, the right way. Your planes will fly better, you'll become a better pilot, and your planes will last longer. It's a win, win, win!
Angle of attack. Lift is generated through flow turning, which causes changes in pressure. It's the same way that airplanes with non-symmetrical airfoils can fly upside down. The "longer top, shorter bottom" crowd are just plain wrong. That doesn't play into it at all, because it assumes that the molecules of air arriving at the front of the airfoil will arrive at the rear of the airfoil at the same time, which simply isn't true. Bernoulli's principle is still at play and is the principle describing the lift, but the crowd who claims it has anything to do with the length of the surfaces from front to rear simply don't know what they're talking about, and that's totally fine. This stuff is complex.
If only the aerodynamics I'm seeing were as simple as these are ;) good job btw for not only explaining bernouilli's principle (aka equal transit theory) but also newton's principle. Most people get confused by the equal transit theory while it's mostly newton's law that's keeping the airplane up in the air ;)
Fantastic video. I wished I had seen this video before I purchased my plane. I bought an XK A520 since many people said it was Ok for beginners but after seeing this I believe I made a huge mistake. I was thinking of purchasing a trainer and I saw you reviewed the XK A600. Do you think it is a good plane for a complete beginner like me? Bare in mind that I have a 2CH plane I am practicing now.
Yes, and no, on the control surfaces. Lift also applies to them. Pulling back on the stick changes the shape of the airfoil of the elevator. It increases lift on the underside causing more lift on the bottom. Same thing for the ailerons.
David seems like he has his head around the science a little more than "the Joshs", which comes across in his more focused and concise explanations.Can you bring him out for the next video?
Bernouli's theorum applies equally to flat plates as it does to round aerofoils. Because the flat plate is at an angle to the airflow, the air still has to bend around it. The air speeds up because it goes through a choke (in much the same way as water speeds up through a set of rapids (i.e. a choke)). Bernoulli's theorum simply states that as the speed of the air increases, the pressure decreases. Pressure differential = lift. Simple.
Bernoulli's principle states that when a fluid is moving at a high velocity, it will experience low internal pressure and vice versa. Therefore, an aerofoil allows air above it to flow faster as there is a slant surface for it to flow downwards. Meanwhile, air below the aerofoil will flow like normal but has a higher pressure than the air above it. Thus, higher pressure below and lower pressure above the aerofoil will produce lift.
You should talk a bit about the modes on the transmitter. If you have some more experienced friends to help you, use the same mode as them. So they can start and trim a plane and hand you the transmitter then. Training a new mode is a pita ^^ I tried changing from 1 to 2 when starting with helicopters. It's almost impossible to get that into your head, when you learned it different when you were a kid :)
The Jury is not "out." By assuming equal travel time, you assume that the air will go at a different speed than it does. Bernoulli's principle is not a major factor in generating lift at even somewhat significant angles of attack.
Newton's 3rd law is the 1st order solution to why a plane flies. The wing directs air downward (angle of attack) and that is met by an equal and opposite force (lift). No plane takes off without pointing its nose up (gets "sucked up into the air"), during takeoff. Symmetrical wings fly and aerobatic planes fly upside down, because Newton's 3rd law is the primary reason for lift. Bernoulli's effect is an important 2nd order contributor to lift and you can optimize the efficiency of a wing, by optimizing for Bernoulli's effect. However, there is no rule that says air moving over the top (longer path) and bottom (shorter path) must meet at the same time at the rear of the wing. In fact, there is a term "slipstream" for the effects of the two flows arriving at different times. The "awesome little trainer" also experiences Bernoulli's effect, as the airflow over the top of the wing travels faster (largely due to Coanda effect, which is a whole 'nuther topic). The thing is, the air isn't travelling faster, because it has to meet the air that it was separated from. One key reason for the semi-symmetrical and flat bottomed airfoil shapes you show is not path's length, it is that it takes advantage of Coanda effect and delays the onset of stall (also, another whole topic).
Elevator controls pitch...if it controls altitude then cutting the throttle disproves. Pitch and throttle control altitude You guys do a good job though presenting your flight tests.
I'm not sure about the "downwards" bit. You can produce lift "upwards" or "sidewards" or any other direction in relation to the earth. The airflow increases in speed because it is going through a choke (between the aerofoil and the other air above the aerofoil).
Lift is actually created because of Bernoulli's principle, but not in the way described in the video. Bernoulli's principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure or a decrease in the fluid's potential energy. In English, if air goes faster, it has less pressure. lift is created because the leading edge of the wing creates a higher pressure zone due to it's forward motion. There is also a low pressure zone created just behind the leading edge on the upper side of the wing (camber) that sucks the air over the wing. The example of Bernoulli's principle in the video does not account for the fact that the air on the upper side of the wing arrives at the trailing edge before the air on the bottom side. At least, that's my understanding from some limited research and if someone knows more about it please correct me.
Great video, thanks for the help. I really want to get into RC flight and I'm thinking of getting a Super Cub DSM RTF, have you even looked at one of these?
I love this series, out of all the channels it's probably the most content-heavy, I just wish they weren't so jittery I feel like I'm being pelted by info by two chipmunks addled with caffeine XD Slower with a bit more structure would put the class to sleep so... ill just drink 2 espressos and come back.
I have a BIX3 that I bought a long time ago, because my older friend said that it was a good beginner plane (and it's simple to fly, which I like), and he helped me fly it with a buddy box thing. But I have not flown it in a really, really long time. Like, at least a few years. I want to get back into flying it but I'm kind of nervous to fly it by myself... Any suggestions for me to practice flying by myself? :)
![Jack Harlow - Hello Miss Johnson [Official Music Video]](http://i.ytimg.com/vi/Q86_nlRoIGw/mqdefault.jpg)
Just getting back into the hobby after quite a few years and your beginners series is really helpful thanks 👍
Your videos have reminded me of my love for RC Flight. I used to love going to watch people flying. Wanted to get into it myself, but life got in the way. I think I might have to pick up a versa wing trainer after the holidays. Thanks for doing what you do.
"Air is a fluid and love is a battlefield"
The two most truthful things I've heard all day :)
Im going to spent hours watching these series. Excellent series!
Like your engrish
Marina Johnson i like your English to
I already have as I have t gotten my first plane yet but with my taxes in a month or so I'm gonna get the carbon cub S I'm not new into RC hobby just planes used to race RC cars 15yrs ago
I started with a simulator, and it has probably saved me hundreds of dollars worth in crashes by now. It is indeed really helpful to start with one. Love this series.
It's important to remember that when you stall you can't use ailerons since the airflow breaks away from the wing. Always use the rudder when stabilizing in a stall on the roll axis.
Guys your videos are excellent. I am a trainer/instructor at my flying club and your vids are proving to be an invaluable training aid to newby flyers. Well thought out easy to understand explanations and fun to watch while learning. Keep em coming.
Flat bottomed wings you make the rocking world go round!!!
I'm from nz. An haven't flown rc for forty odd years. Thought I'd try again an bought a 1400mm 182 cessna. RTF. Found your site an joined, Your beginner series is brilliant so can't wait to watch them all. At the mo I've got lots of questions. But I'll watch an see your posts. Even us old farts can still learn. Thanks youngsters..!!
learned these in grade 3 and thought it was useless... Now it gets extremely useful and helpful for me.
Thanks for the rough explanation of airfoils. Very useful when designing a plane from scratch.
I’m new to it all I am 30 years old and enjoyed this series. Thank you I am going to get into this hobby. I will order a simple starter on your website. GOD BLESS
So what plane did u go with as a beginner?? I was thinking about carbon cub S RTF or the EDF f16 BNF with a spektrum dx8 transmitter Ive never flown but raced rc cars 15yrs ago I know it's not the same or close but I looove military fighter jets and will eventually get one so might as well get it even though I haven't flown cause it has safe mode and 3 different modes on the eflite f16
@@brettcoyle2399 check out the Sport Cub S from HobbyZone. Excellent little trainer and for a very good price.
Josh, you need to watch yourself on the replay and count how many times you interrupt. We all have a tendency to want to speak whatever is on our mind and think that it is more important than what someone else is talking about.
Thanks for the videos, you have convinced me to get into R/C
+Marty Lemons But aren't they both named josh..
Aaron Timm OK, the shorter , younger one.
Marty Lemons lol ok
It's part of the act...
Marty Lemons its pretty obvious he is interupting to help clarify points, it is part of a act.
Josh, red ears, is a great teacher!
Thanks to another awesome video!
Can't wait next episode. Maybe the most complete videos I've seen in RUclips. Great job guys!
Lol I have been doing this hobby for 3 years and I know they are called elevons but I like to call them ailervators still! Great tips guys! really good stuff for learning about RC planes! I have watched you guys for the 3 years I have been in this hobby and you guys have helped me all the way! Thank You!
Great information. I started flying back in February so of course I have moved past some of this but I will still watch every episode to see if I have missed anything. I appreciate you keeping it basic. I think you have found a good mix of between good information provided simply.
I would love you to do a series after this on Intermediate RC flight. Show principles and how to's for basic acrobatics, flying off of water etc.
Two birds... one stone ;)
2 planes 1 pilot
Vape Clouds901 underrated comment
2 girls 1 cup
@@albertweedsteinthethuggeni7797 sure, take my like clever man
Thanks! CG will be covered in Ep 4 most likely.
As an aerospace engineer, I can assure you that lift is actually caused by both design camps, but mostly from the Bernoulli Principle. This is evidenced by the under-cambered wing, which takes full advantage of both the Bernoulli Principle and directing some airflow downwards to take advantage of Newton's Third Law. Also, It's actually possible (in fact required when building actual aircraft) to calculate the total lift at all attitudes of flight, and that requires knowing all the forces on the plane that are generating lift and how much of the total lift they are generating.
+Jacob Bauer
sir,
would you be willing to help me in my extended essay on aerodynamics? I am doing it on paper planes and just need a couple of ideas for it.
hope to receive your reply soon!
Thanks!
As an aerospace engineering student, I can assure you that the Bernoulli Principle is incorrect for the simple reason that airflow doesn't have to, and usually doesn't meet at the end of the wing. They don't have an appointment and there's no physical law implying they should. Though it doesn't matter for tutorial videos like these, it isn't actually a correct explanation on how wings generate lift.
Awesome video! My son loved it. He was so glad we found it. Excited to see the rest of talks series.
Each time with a sinking heart watching your show! You guys are awesome! Maybe you'll come to Russia someday and create one of the episodes. I will be glad to help you.
Didn’t age well
good work gentlemen! we always appreciate those willing to share their knowledge and experience. very helpful. thanks.
Hi Guys,
I just started RC Piloting and found your first video extremely helpful and i was looking forward to this one. So thank you very much. :)
"Love is a battlefield" LOL
Great video guys! Even as an experienced pilot I found this very entertaining!
Great video. Remember guys a wing can stall at any airspeed, as a stall is related to AOA, and when an AOA is exceeded the airflow can become unstuck and cause a stall.
Always good to review the basics
Long time first time big fan. I know 3chan is your recommendation for beginners, but you only talk about how rudder affects yaw and not how yaw effects the differential speed and differential lift at the wingtips causing roll. The concept of how a 3chan airplane rolls with only rudder input takes a bit more explanation for new pilots. Great video and keep up the good work!
I studied aerodynamics in engineering school, and you did a fantastic job of explaining the basics of aerodynamics for total science illiterates.
Great video, I'm certified to fly but these videos are brilliant, I wish you guys had been there when I was learning, would have made it so much easier (and cheaper). I have no doubt this series of videos will help a lot of people get into the hobby without spending a huge amount of money and time crashing (you will crash at some point). The high five rule is a great idea, I use it every pre flight and it has saved atleast one plane that I had not setup correctly. High 5 Flitetest, awesome!
These videos are great! The Josh with hair is hilarious!!! These two are great together.
k ive watch many how to videos but you guys make it fun to learn, thank you and keep teachin
Great videos for us beginners. I`ll keep watching them.
Thank you for Sharing, I am just getting into planes, I got the super cub S. I dig it so I've been watching your series I'm beginning flyers I will watch over and over till it takes I am going to learn to fly it. I'll be watching for more info
A series on multirotors and FPV setup systems would be GREAT !!!!!
you can leave it out, but it will probably fly better if you hook it up with the aileron channel. right stick side to side. that way the rudder and ailerons work together. this helps offset aileron differential drag, a side effect of ailerons causing yaw in the wring direction when the ailerons are applied. the higher the aspect ratio of the wing, and the farther out the ailerons are the more it will affect the plane. the cessena could prob live without the rudder, but you will notice it.cheers
Nice Video! I would recommend flying with mode 1. There you have the elevator and the aileron separated from each other. This prevents not steering the ailerons while you use the elevators. In my opinion this would be better for beginners.
You make a good team. I should only watch the beginning, but suddently I had seen all 20 minutes :-)
Great vid guys.
There doesn't exist two camps, only the informed and the uninformed.
What Bernuolli's principle describes is the phenomenon that occurs due to Newton's principle. The air is accelerated downwards by means of airspeed and angle of attack / airfoil and this generates a counterforce (lift). The dispute between the Bernoulli / Newton-principle concerns the inability to distinguish between cause and effect.
And that is why most people think this is so hard to learn, since even a simple explanation like yours, made with the best intentions is pretty difficult to understand at first sight.
Exactly
Can u explain how lift is generated by a thin curved wing?? (Like those used in fisrst generation airplanes)
One more thing, can u explain the aerodynamics of B 707 slats??
mjmqubesi the leading edge is closer to paralel to airflow than the "end" of the wing. overall the air is pushed down under the wing. as long as the wing is more curved over the wing than under it is making an underpressure, the point is just choosing the best compromise drag/lift wise. this is why you never see a flying L, it has a useless amount of drag. the tiny curve back in the day isnt much to talk about, but it is better than a flat wing.
Super serie! Keep up the great work!
Love it guys! I've got some friends I need to share these with! Thanks so much
For a slow flyer, I believe a high lift, low Reynolds number airfoil will be the best. Combine this with the right angle of attack and it’s gonna be fun. I’m working on a project where I’m trying to resin 3D print an indoor flyer but I have minimal experience in RC airplanes but I can fly little Cessnas. But also a little advice, research on how high you can fly in your area with your RC airplane since you need a license to fly it above a certain altitude, more about this can be learned by checking out FAA Part 107 Certification.
Podcast 4 was awesome btw guys.
Who got the referenc to the song of "Queen" . (Fat Bottom Girls).
Genius XD
Great job FT. I'm advance in the hobby and still learned a bit.
hahah same here im actually at the cafeteria at my lunch break just got out of my aerodynamics course hahahaha flitetest u alway keep it interesting
You guys make some great beginner videos for RC aircraft. I'm planing on designing my own plane (a "scratch plane" is what you called it, right?), and these videos have helped me a lot. I would, however, like to point out that some of your theories of lift are incorrect/partially correct. (The following points are guided by college classes I have taken.)
The equal transit time theory you mentioned has been proven false. A perfect example of this is actually some of the cambered airfoils you talked about, especially the cambered plate airfoil on the small orange plane you held up. If the plate is super-thin, the length of the top and bottom sides are basically the same, but the cambered plate can still generate lift.
Also, the "Newton's Third Law" concept mentioned in the video is incorrectly described. Air doesn't just bounce off a surface and transfer momentum like that. Admittedly, the correct explanation is extremely complex and is nothing less than college-level material (If you are interested, the correct mathematical description of Newton's Laws for fluid dynamics are the Navier-Stokes equations, which are multi variable vector calculus equations that combine Newton's Laws, the conservation of mass principle, and the conservation of energy principle).
Nevertheless, I like this whole video series, and have learned a lot. I wish the producers and all involved in this channel good luck.
Love you guys. Lots of great info. This videos been shared on my local hobby shops webpage!
Cool and funny. You guys are great. Thanks for all the awesome content. This helps me a lot with making and flying some planes.
WOW, this is just so helpful !!! Thank you so much ! I don't know if you guys are planning to cover CG but it would be very appreciated. Awesome work.
Josh & Josh ; That was a Great training Video ! Thanks for the Video !
RC Helicopters for Beginners would be nice :) Thank You very much guys!
and me also learning about Aerodynamics for my ground school! what a coincidence
Nice queen reference! Love it! Thanks for helping people like me get into the hobby I’ve had a mini aprentence s and just ordered a mini Corsair from ur guys website!
soooo much information. This is going to be great for my school project!
first time here.. love these guys..made me understand
AMAZING! VERY EDUCATIONAL, THANK YOU VERY MUCH, MY HAT OFF TO THE GUYS THAT MADE IT POSSIBLE, ( I CALL THEM THE JOSHES) WITH ALL DUE RESPECT OF COURSE!!
Very impressed.
Actually, the elevator changes the angle of attack (look it up) of the wing. The higher the angle, the more lift (to a point) the wing generates, causing the plane to climb. There's a lot more to aeronautics than meets the eye, but it all makes sense. and it's actually fun to learn, the right way. Your planes will fly better, you'll become a better pilot, and your planes will last longer. It's a win, win, win!
How do you get the symmetrical airfoil to generate lift?
Angle of attack. Lift is generated through flow turning, which causes changes in pressure. It's the same way that airplanes with non-symmetrical airfoils can fly upside down. The "longer top, shorter bottom" crowd are just plain wrong. That doesn't play into it at all, because it assumes that the molecules of air arriving at the front of the airfoil will arrive at the rear of the airfoil at the same time, which simply isn't true. Bernoulli's principle is still at play and is the principle describing the lift, but the crowd who claims it has anything to do with the length of the surfaces from front to rear simply don't know what they're talking about, and that's totally fine. This stuff is complex.
you should put these in a playlist
Also, stall takes place when the angle of attack becomes to great in accordance wit forward momentum
If only the aerodynamics I'm seeing were as simple as these are ;)
good job btw for not only explaining bernouilli's principle (aka equal transit theory) but also newton's principle.
Most people get confused by the equal transit theory while it's mostly newton's law that's keeping the airplane up in the air ;)
The fuselage actually ends at the back of the cabin. The part where that tail is attached to the fuselage is called the empanage
Fantastic video. I wished I had seen this video before I purchased my plane. I bought an XK A520 since many people said it was Ok for beginners but after seeing this I believe I made a huge mistake. I was thinking of purchasing a trainer and I saw you reviewed the XK A600. Do you think it is a good plane for a complete beginner like me? Bare in mind that I have a 2CH plane I am practicing now.
I like your channel, it makes me want to buy a plane! thank you for your videos
Hey, are you going to be able to film the episodes now with all of the snow?
Great introduction info for beginners. Thank you
Well done, gentlemen
Yes, and no, on the control surfaces. Lift also applies to them. Pulling back on the stick changes the shape of the airfoil of the elevator. It increases lift on the underside causing more lift on the bottom. Same thing for the ailerons.
A watchable clip!! Emotion.....motion.
hello sir i'm from nepal .i want to be a member of your flite test education
can u please provide the procedure for admission
David seems like he has his head around the science a little more than "the Joshs", which comes across in his more focused and concise explanations.Can you bring him out for the next video?
like always ,, cool guys... South Africa
Bernouli's theorum applies equally to flat plates as it does to round aerofoils. Because the flat plate is at an angle to the airflow, the air still has to bend around it. The air speeds up because it goes through a choke (in much the same way as water speeds up through a set of rapids (i.e. a choke)). Bernoulli's theorum simply states that as the speed of the air increases, the pressure decreases. Pressure differential = lift. Simple.
Bernoulli's principle states that when a fluid is moving at a high velocity, it will experience low internal pressure and vice versa. Therefore, an aerofoil allows air above it to flow faster as there is a slant surface for it to flow downwards. Meanwhile, air below the aerofoil will flow like normal but has a higher pressure than the air above it.
Thus, higher pressure below and lower pressure above the aerofoil will produce lift.
very interesting good information and humor too.
You should talk a bit about the modes on the transmitter. If you have some more experienced friends to help you, use the same mode as them. So they can start and trim a plane and hand you the transmitter then.
Training a new mode is a pita ^^
I tried changing from 1 to 2 when starting with helicopters.
It's almost impossible to get that into your head, when you learned it different when you were a kid :)
The Jury is not "out." By assuming equal travel time, you assume that the air will go at a different speed than it does. Bernoulli's principle is not a major factor in generating lift at even somewhat significant angles of attack.
Newton's 3rd law is the 1st order solution to why a plane flies. The wing directs air downward (angle of attack) and that is met by an equal and opposite force (lift). No plane takes off without pointing its nose up (gets "sucked up into the air"), during takeoff. Symmetrical wings fly and aerobatic planes fly upside down, because Newton's 3rd law is the primary reason for lift. Bernoulli's effect is an important 2nd order contributor to lift and you can optimize the efficiency of a wing, by optimizing for Bernoulli's effect. However, there is no rule that says air moving over the top (longer path) and bottom (shorter path) must meet at the same time at the rear of the wing. In fact, there is a term "slipstream" for the effects of the two flows arriving at different times.
The "awesome little trainer" also experiences Bernoulli's effect, as the airflow over the top of the wing travels faster (largely due to Coanda effect, which is a whole 'nuther topic). The thing is, the air isn't travelling faster, because it has to meet the air that it was separated from. One key reason for the semi-symmetrical and flat bottomed airfoil shapes you show is not path's length, it is that it takes advantage of Coanda effect and delays the onset of stall (also, another whole topic).
great explanation
Good video guys. What do you recommend if you want to start with a quad copter like DJI instead of a plane?
Very helpful, thanks. Just bought an Aeroscout :)
Elevator controls pitch...if it controls altitude then cutting the throttle disproves. Pitch and throttle control altitude
You guys do a good job though presenting your flight tests.
I'm not sure about the "downwards" bit. You can produce lift "upwards" or "sidewards" or any other direction in relation to the earth. The airflow increases in speed because it is going through a choke (between the aerofoil and the other air above the aerofoil).
put speed to 0.5 and they becomes really quickly stone sensual. I like it.
Lift is actually created because of Bernoulli's principle, but not in the way described in the video. Bernoulli's principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure or a decrease in the fluid's potential energy. In English, if air goes faster, it has less pressure. lift is created because the leading edge of the wing creates a higher pressure zone due to it's forward motion. There is also a low pressure zone created just behind the leading edge on the upper side of the wing (camber) that sucks the air over the wing. The example of Bernoulli's principle in the video does not account for the fact that the air on the upper side of the wing arrives at the trailing edge before the air on the bottom side. At least, that's my understanding from some limited research and if someone knows more about it please correct me.
Hii Flite Test, Really awesome instructions! I'm going make an Airplane shortly! 😍!
Let me know the packages (except body) for beginners!
great job . thanks for the knowledge. god bless you
I have about an hr on the champ I’m pretty good now I purchased a bigger but irk if I made the right choice it’s a Trojan T-28 1.1mm
Elevon mixing can also be done in the receiver, like the OrangeRX RX3S.
i am planing on getting an rc plane and this will realy help me :)
Great series
Great information guys!!!!!
Great video, thanks for the help. I really want to get into RC flight and I'm thinking of getting a Super Cub DSM RTF, have you even looked at one of these?
it was very helpful!, thnx , keep going....
I love this series, out of all the channels it's probably the most content-heavy, I just wish they weren't so jittery I feel like I'm being pelted by info by two chipmunks addled with caffeine XD Slower with a bit more structure would put the class to sleep so... ill just drink 2 espressos and come back.
I have a BIX3 that I bought a long time ago, because my older friend said that it was a good beginner plane (and it's simple to fly, which I like), and he helped me fly it with a buddy box thing. But I have not flown it in a really, really long time. Like, at least a few years. I want to get back into flying it but I'm kind of nervous to fly it by myself... Any suggestions for me to practice flying by myself? :)
Very entertaining!
Liking this to dad I know it lol, keep up the good work
Great video! Thank You!