Absolutelly impressive, Mr. RC! I am also an aviation teacher here in Brazil and you Sir will be my inspiration! Great class!
@FL_Engineer3 жыл бұрын
How did I miss the Newtonian component all these years? It was right in front of me but I never had someone explain it so well.
@keithhudspith52452 жыл бұрын
Its ok, you're not the only one.
@engineerahmed72482 жыл бұрын
SYMMETRIC AIRFOILS & FLAT PLATE AIRFOILS work on ONLY NEWTONIAN LIFT PRINCIPLE ..NO FANCY BERNOULLI LIFT
@lambertodgr8 Жыл бұрын
Having only taken up flying on retirement at age 75 I have a lot to learn .your videos put things simply so that my senile brain can understand .
@LLH7202 Жыл бұрын
If you think about it, a propeller is nothing more than a rotating wing. It produces lift to create thrust. Bernoulli says that the low pressure area ahead of the prop sucks the plane forward to produce thrust. Newton says the the air is accelerated backward to produce thrust in the same way a jet engine does. Which is true? Both.
@I3attleFieldHero9 жыл бұрын
I don't hobbie in RC aircraft but this is obviously applicable to full sized aircraft. Very clear and concise video with a great host. Thanks very much!
@cencalmatt11 жыл бұрын
As a licensed flight instructor (and rc modler) I must say, great video. You clearly have a good understanding of flight characteristics and can demonstrate/explain it very well. More of these kinds of videos would kick ass. Ok bye.
@marialauragalvez50118 жыл бұрын
Grade 6 student here. I was extremely confused by this topic, thank goodness I came across your channel!
@kenbarnett81899 жыл бұрын
Well said, your center of gravity comparison was very enlightening, thank you.
@Ritefita2 жыл бұрын
yes! Then why didn't he said about planes with a wings AT the center of mass? Do they exist?
@readymarkgaming20045 жыл бұрын
I hope my teacher in aviation when I grow up will be like you, you're really good and I got the lesson fast!
@Spyblox0078 жыл бұрын
I'm trying to build a plane in ksp, and this really helped. I had no clue what flaps were for, or even what direction to angle them before watching this video.
@cayrick7 жыл бұрын
We are not asking for a physics dissertation here but an understanding that works. Your explanation gets the point across very well. Let the egg heads prepare a complex video with angle of attack and other variables that will put viewers to sleep. This certainly helped me to understand the concepts he was trying to convey and I thank him for it.
@Poop-nu1so6 жыл бұрын
Semih Tok
@rp44898 жыл бұрын
Your real good teacher thanks.
@springbok40154 жыл бұрын
Dave Flysitall he needs better teachers
@orlandomeister27424 жыл бұрын
@@grizzmcsammiches6136 is
@crewe994 жыл бұрын
*You’re a and you’re welcome 😉
@noeorbase11333 жыл бұрын
best
@bl4ck0ut228 жыл бұрын
Just started working at an aerospace company. First day was deburring clutch plates for these flaps. So awesome.
@stinger64707 жыл бұрын
I've been confused by how flaps work on planes,finally got an answer after 2 years of looking
@manaoharsam42112 жыл бұрын
You did a fantastic job. Explained two reasons for lift, and drag component of flaps. Score of 100 out 100. Need teachers like you.
@GBLynden6 жыл бұрын
I know this is not a new video, but I found it very helpful to confirm what I had already suspected. Thank you Bruce!
@jacobghansah25273 жыл бұрын
You teach like you invented aeroplane. I will like to make you my mentor. Great job done.
@kennetheaton36639 жыл бұрын
I knew very little about how flaps and how other items on an airplane worked but this presentation was very very good and understandable to me.
@jimbo571099 жыл бұрын
more please Bruce as a newbie found it interesting and informative and for a man of more advanced years and into this hobby for the first time
@jakehart12311 жыл бұрын
Fantastic Explanation! I am a multiengine and instrument rated private pilot and I have never heard such an in depth explanation about flaps before even though I have gone through years of study. Great job! Keep the videos coming. Jake from the USA.
@ricardopr5411 жыл бұрын
Disregard my last comment. It wasn't your video but my computer. I tried again and it worked really good and was able to watch your video. Thanks for taking your time to share your knowledge with your subscribers.
@SquawkVFR19819 жыл бұрын
Fantastic video!!!! Well done! Greetings from a student pilot from Germany!
@DemoVideosDieCutting10 жыл бұрын
Easily best teacher I've ever seen.. been in school for a long time.
@TilmanBaumann11 жыл бұрын
I appreciate that you at least mention that the Bernulli effect as a explanation of why air-planes fly is at least disputed. The Newtonian explanation makes so much more sense and I'm convinced it is responsible for the majority of the lift created.
@cliftondalezirkleii867011 жыл бұрын
Bruce you gave a great presentation today on flaps. I had read an article last weekend about flaps and your pictorial explanation helped my understanding even more. Great job!
@brotherblonde11 жыл бұрын
Excellent explanation! I was also a Grade 1 instructor and now I'm a B767 captain. A point of interest, the advanced flaps such as Fowlers, and leading edge slats, also increase the surface area of the wing and so increase the lift
@lucyotuoma43942 жыл бұрын
Am excited to hear that you are a captain
@MrNuggin7 жыл бұрын
Hi! It would be nice to see here Lilienthal's Polar Diagram, but anyway comprehensive presentation. Probably worth mentioning (or with more emphasis) - flaps are mainly drag generating devices (lift is not the main part here :). One equation to remember is quite easy in that case: Cdi (induced drag coefficient) = Cl^2 (lift coefficient squared) / Pi * AR (wing aspect ratio) Cheers!
@MyTechWebTV11 жыл бұрын
Simply excellent Bruce! I enjoyed this very much. I just don't see how anyone could give this a thumbs down. Free and accurate information presented well. Probably five of the "Old Sore Heads" just pouting.
@radimollov4562 Жыл бұрын
Sir, perfect explanation. I am starting my training in half a year from now and I am glad i found Your content. Hope you are doing well!
@49richard10 жыл бұрын
Thank you!! It is going to help me use my flaps on my Challenger, your explanation is very easy to understand.
@konturger11 жыл бұрын
A BIG BIG BIG THUMB UP !!! - I really enjoy your videos, as a X-Plane Sim Pilot, and real life Skydiver with over 200Jumps, this is total perfectly brought to the point. Will be watching your videos in future! Keep things going on, like this! Cheers from Germany.
@richardquinones559811 жыл бұрын
now i am learning more then i thought, which was nothing. great videos. love them
@steelydanfan1006 жыл бұрын
Great video, I am just getting back into model airplanes and my Dynam Hawksky 4 CH motor glider needs flaperons, it glides so well, I need an acre and a half just to land ! Your whiteboard and ability to hold 4 colored markers while talking and drawing is remarkable. I know I needed flaps, I can now explain why to someone else, that is the lesson learned today.
@noeleaton38129 жыл бұрын
Great video as always, maybe an explanation of difference between 20 degree flap for more lift to help take off and 20 + degrees to give more drag for landings, As stated flaps have 2 main effects they create extra lift and also extra drag, up to 20 degrees (approx) the extra lift component is greater therefor assisting with take off, at more than 20 degrees the drag component becomes greater there for helping to slow the aircraft down and help with landings , This is why many aircraft have multiple or variable flap settings for different stages of the flight
@mattfield33719 жыл бұрын
I think what confuses most people about it is the extra drag but more lift concept...it's a bit counter-intuitive, under normal conditions most people think less drag, more lift but with flaps it is the opposite.
@mattfield33719 жыл бұрын
I also noticed something else, while this helps with the glide slope and air speed, the pitching effect on the aircraft and lift properties while landing are probably actually quite desired for a pilot who wants to make the landing as smooth as possible...if it has a tendency to nose-up the aircraft then that is perfect for bringing the rear wheels down first.
@kadmow7 жыл бұрын
In general Aeroplanes with a CL above CG (vertically), the flaps do pitch the AC nose up (with no pilot input) due to the high centre of induced drag, but for descent to landing it increases comfort and visibility by allowing more lift at a lower nose attitude, ie. ie less radical for the passengers, the roundout is up to the pilot and the length of runway available.
@engineerahmed72484 жыл бұрын
Totally spot on ... For advanced learners l'd like to add ... Flaps change wing camber & above all wing chord. Meaning increasing angle of attack (AOA) by some 5 degrees despite plane staying in same orientation. Plus control surfaces lose authority at slow speeds &n controls feel mushy
@daviddavids28843 жыл бұрын
since the presentation begin with a FLAWED visual aid, 'spot on' is not what i would Call it.
@marcelstanford4303 жыл бұрын
As a fixed wing private pilot I knew there were 2 kinds of lift but only the name of the Bernouli lift. I always called the other one "deflection lift" when the flaps were down. The best way to demonstrate both is to take a narrow strip of paper and hold it in front of your mouth. Blowing across the top of the paper gives you Bernouli Lift and blowing below the paper gives you Newtonian Lift. A clean wing is all Bernouli Lift and as you add flap you get less of that and more Newtonian Lift with more drag and therefore slower speed / lower stall speed for landing.
@brandonmuffoletto3032 Жыл бұрын
Super helpful, as an aspiring aviation simulator and someone going for my PPL license I greatly appreciated this.
@nocare852910 жыл бұрын
lastly im glad you are making these videos. I am also glad they are simple as most people wont care about the higher complexity stuff. Just try and do a little refresher research to make sure the simplification is not misleading
@BKD7011 жыл бұрын
Aaron, The change in airflow over the horizontal stabilizer (HS) with flaps deployment is the largest determinant of how the airplane will react. An airplane with a HS that is lower than the wing will generally have a nose up tendency, where an airplane with a HS that is higher than the wing will generally have a nose down pitching tendency.
@hamelionz11 жыл бұрын
Thank you a lot, please keep making videos of HOW IT WORKS. Cant wait till you will start explaining the electronics, please do not miss anything.
@2750nav9 жыл бұрын
Sir, pls more of such theories videos !!! This was really helpful !! we want more of "THEORY TUESDAYS"
@twonkit2 жыл бұрын
i now understand flaps ,thanks to you , keep up the very good work you do sir , all the very best .
@razzelldazzellrc27293 жыл бұрын
Bravo,Well done! I've noticed a greater torque roll effect when accelerating with flaps down.
@youknowwhatithink5 жыл бұрын
You did a great job explaining everything. Thank you soo much for simplifying aerodynamics
@ficosk84 ай бұрын
I love this theory and praxis explanations! It´s like going again to school or university :D
@wordreet11 жыл бұрын
I learned a lot from Mr Bernoulli when I started messing with carburettors 40 years ago, and more when I began making and flying kites from about 25 years ago. So I'm only too happy to recognize him as one of the family along with my best friend Albert E. They both solve the airplane on the conveyor belt question.
@RoyMcAvoy Жыл бұрын
Thank you. I learned new things today. I've always know how wing works with Bernoulli principle but for the Newton principles, it's the first time for. Very precise and clear explanation. Thank you again for this great video.
@NaCN9 жыл бұрын
I'm a beginner and this video helped me a lot. It's perfect for people like me.
@TheRoggan12310 жыл бұрын
I thought I had a pretty good understanding of flaps before but this did widen my understanding, thank you! :)
@Cess182sn11 жыл бұрын
This video is more than adequate to help people understand flap use.
@icedteaforever11 жыл бұрын
Both are awesome. Thank goodness for variety!
@joelee58754 жыл бұрын
Excellent examples, especially on the above wing as compared to the lower wing craft types., Thank you.
@WingTipAerialFilming11 жыл бұрын
Great explanation Bruce, particularly since you spoke about the Newtonian part of it. The explanations I used to read as a kid really confused me as they made out that lift is only created by a wing with an airfoil shape, but I had model aircraft with no airfoil's or symmetrical airfoil's (control liners). When I studied engineering I learned that the Bernoulli effect is basically a statement of the law of conservation of energy.
@oswaldpereira64412 ай бұрын
Briliant. I was struggling with the concept of centre of gravity and that added it all up.
@Acula33RC10 жыл бұрын
Great video. You make it all seem very easy to understand. Thank you
@kevindodds82219 жыл бұрын
Thanks so much for your video. I was having a discussion with my three sons about the effect of flaps on aircraft and your video explains it very nicely in plain English that even my 9 year old should be able to follow. Cheers Kev
@gasmansnow11 жыл бұрын
Thanks Bruce. I'm 56 and new to this that was great.
@GeorgeMartinRcScratchbuilds9 жыл бұрын
Great video very informative.Thanks.
@Big_Azz11 жыл бұрын
Great info for a Noob in RC. Thanks for putting the time in to share your exeprance and knolage
@pjwlk7 жыл бұрын
Outstanding as usual! I'm grateful for your efforts - thanks so much. BTW, is there a way one can set up an AoA system for FPV using air speed sensors or something? Cheers!
@benmartz34056 жыл бұрын
Thanks for the video. I always learn something new watching them.
@nielskistrup82313 жыл бұрын
Excellent explanation on what flaps are good for. Don't own an R/C aircraft, but practicing w. the E-flite EC-1500 (which has a 3-position flap setting). Applying what you taught me, is leading to much smoother landings.
@zebzah98209 жыл бұрын
Wish you'd been my teacher at school. Complicated theory explain easy terms. THANK YOU
@happygolily3 жыл бұрын
Really clear explanation of flaps - I have a much better understanding now, thank you!!
@Trev74011 жыл бұрын
Brilliant informative video on lift theory and flaps, particularly pitch difference between low wing and high wing configurations, should be compulsory viewing for all new rc pilots.
@Perry_Wolf5 жыл бұрын
Late to the party, but still an excellent video. I would like to add a warning to people who choose to go with "flaperons" on their model, (where ailerons and flaps share the same control surface). Especially when the model incorporates full length ailerons, (ie: aerobatic planes/flying wings etc.). You must be very careful of your speed and your directional corrections under these conditions. Any directional correction should be as minimal as possible. If you're flying your model with the flaperons deployed fully and the model is flying just above it's new lower stall speed, then you suddenly make a large correction with aileron input, the rising aileron will drastically reduce the lift thus taking away the extra lift the flap was giving and very likely stall that wing, causing a spin, if it has time to spin before it hits the ground. Just something to keep in mind.
@trachooyansucon98747 жыл бұрын
Thank you so much, I will slowly increase my flap. Very good advice!
@luke_atthat5 жыл бұрын
Thank you for the nice explanation on flaps. Now I understand why they recommand to put a bit of elevator down to a high wing.
@nazaharin7 жыл бұрын
Loud & very clear explanation. Thank you for sharing..
@Ahblair411 жыл бұрын
Great video. I learned that I had the wrong idea about flap deployment, but now I got the idea. Thanks!
@raffman42666 жыл бұрын
You're the best my friend! We are learning so much from you!
@souvik71975 жыл бұрын
Thank You very much for the video and very nice way of explanation. But , just one thing I would like to point out is that, modern explanations and newer research for the reason behind generation of lift suggests the 'Coanda effect' and not Bernoulli. The flow from the upper and lower surface do not meet at the same time.
@AmbientMorality4 жыл бұрын
No, Coanda effect is completely uninvolved in lift generation. I'm not sure how that spread so much but it's completely wrong. Source: probably any aerodynamics textbook ever written, but Anderson 12th edition for sure
@hovis19545 жыл бұрын
Another great video. Clear explanation. I won't need to look anywhere else, I think I've got it. Thanks for taking the time.
@fergrn7 жыл бұрын
simple yet concise. much better understanding now thanks
@1959ABF10 жыл бұрын
Mate...loved your presentation and it was so very helpful. Have always wondered the importance of flaps and you have explained it simply and easy to understand. Hat off to you and will be watching many more of your vids.. GREAT WORK...
@salsamancer5 жыл бұрын
Wings are amazing machines. When ever I fly I am always fascinated by the complex flap mechanism at takeoff and landing
@davidr534311 жыл бұрын
Thanks Bruce! You are just an amazing asset to this hobby.
@NDMCN5 жыл бұрын
Actualy the pitch up and pitch down answer is because of flaps extra drag not because of extra lifting force. The cg of the plane must be already aligned with this wings lifting force and this forces will not create any tourque because it has not any perpendicular force between cg and lifting force line. If you create a new force with flaps drag or anything else that will cause a torque and this torque will try to spin model from its center point until you create a negative torque, in this example with elevator or something else Thats why the plane starts to act like it has a elevator movement That may be my first comment under your videos, because of that i dont want to be the bad guy :D just because of correcting something in video I like this channel so much and you are the one of my best teachers thank you so much for everything you teached me :-)
@Perry_Wolf5 жыл бұрын
What?! Did you watch the same video as me? You're not correcting anything, this is exactly what he says in the video at 11:41. Nor does he say anything about lifting force creating pitch change.
@AusHobbies11 жыл бұрын
Great video, has been much needed!
@davemountford74811 жыл бұрын
You are completely correct, I did post a correction about 10 seconds after the original post. Couldn't find a way to edit the original post.
@jwkong11 жыл бұрын
amazing... its been a while but you had been teaching and explaining RC plane to us. Good job and thank you for the hard effort.
@sea300ray11 жыл бұрын
I'm voting for "white board Wednesday". Love your videos by the way.
@paulamsaha19768 жыл бұрын
Wonderful Teacher!!! Very nicely explained!!! Thanks a lot!!!
@damienlim80823 жыл бұрын
Perfect teaching for me. Is simple to understand! Thanks young man!
@MaruMalu18 жыл бұрын
you are better than my own aircraft instructor explanation ...thank you teacher
@spot2be11 жыл бұрын
Hi Bruce, Wasn't sure I'd learn anything, but I like your vids and decided to watch the new 'teaching' segment. I never thought about position of the wing and center of gravity and resulting pitch when flaps are deployed. So I did learn something. Thank you.
@paulsnapp86744 жыл бұрын
Mostly correct but not entirely. As an ATP, Flight Instructor and RC pilot I have never had an aircraft need up elevator when deploying flaps. Theory on a white board is technically correct, but the amount of lift generated on either a high or low wing has more effect than the drag portrayed in this presentation behind the flaps. In both instances, in real flight, the aircraft with rise and need down trim to counter it.
@swgspear11 жыл бұрын
great vid Bruce.Looking fwd to some more.
@vincentchoufa60423 жыл бұрын
what a great lesson, it really cleared up my understanding about the flaps for different plane model
@JERRYinCHS7 жыл бұрын
Brilliant lecture. Although you're intended audience is models it's the same for the full scale. It's helpful to visualize the effective chordline- from the leading edge to the trailing edge of the flap be it up or fully extended. The plane with full flaps will stall at a lower speed (assuming 1G level) but at a lower AoA than clean (the effective chordline is steeper due to the lower trailing edge). The same concept applies with slats- the effective chordline drops with the leading edge of the slats as well as the trailing edge of the extended flap. In jets with slats only extended, you'll be able to fly more slowly but your stall will be at a higher AoA, again the effective chordline is reduced with the lower leading edge. Usually you take off and land with both extended so it's close to the clean AoA. Also, I used to fly the Piper Aztec. When you extended the flaps there was a very pronounced pitch up (unlike other low wings). I was told that was the result of increased downwash over the horizontal stab. Lastly, I spent many years flying the C-141, a high wing heavy four engine jet transport. It too had a dramatic pith-up during flap extension (it had no slats). The rule was 4 4's- as the flaps went through 40%, make four long nose down trim pushes, lower the pitch 4 degrees, and push the power up to 4,000lbs/hr. Thanks for your effort. Cheers!
@rickkremer05257 жыл бұрын
GREAT VIDEO, and explanations of lift. You should been a science teacher.
@BrunoMCDowell5 жыл бұрын
Awesome video. Very well explained. Cleared up all of my doubts. Thank you, sir
@aregorn1110 жыл бұрын
Bruce, thanks for the video, great explanation of Lift, I love reading the comments from people yelling that "you are wrong". apparently they were not listening to the beginning of the video where you told them that there is some contention about the theory you used. LOL you want to see an argument, go into any pilot chat room and get them going about lift, drag, etc... Although most will not discuss it because they know the outcome. LOL The only thing I would have done differently is I would have mentioned "angle of attack" but then again that could be used as a further video. Thank you for your work to better the knowledge available to those who are interested in the RC Flying hobby. I have watched several of your videos and have enjoyed you style of teaching. If you could, would you make one change to your page. could you place your teaching and training videos in a playlist. That would make them easier to find. Thank you Again.
@csessa511 жыл бұрын
Thanks for the great report. We have been having discussion about flaps, spoilers and spoilerons recently. This answered some of the questions. How about addressing: spoilers, spoilerons, and what happens as you increase camber on full span ailerons (some say turbulence causes tip stall). Don"t forget about us glider guys.
@tonysansom7 жыл бұрын
Thanks Bruce, excellent tuition!
@screamingsavage0014 жыл бұрын
Man! Awesome video on flaps. I have watched you since I've started RC
@dmitriykozmin30915 ай бұрын
Sir! this is an amazing explanation! Thank you for your work!
@damianjez43369 жыл бұрын
Very clear, concise, explained it like to a 5 year old. Thank you!
@LincolnshireRose11 жыл бұрын
Excellent introduction to lift and flaps Bruce. Well done. yes, I know that there are assumptions and a few people are pointing those bits out. BUT you are doing a basic introduction. And that is the point. Clear, concise and fun. Congratulations and all the best, Lincolnshire Rose.
@MrJonnymellor11 жыл бұрын
Great instruction and illustration Bruce.Thanks!
@navigator9025 жыл бұрын
Excellent explanation does the same in my piper cub....Cheers to the white board....
@1596357martin10 жыл бұрын
The fact that the air molecules meet at the trailing edge of a profile is wrong... The flow on the upper side is simply faster and therefore leaves the profile earlier.
@NineZeta10 жыл бұрын
True. Other viewers may want to check this out: www.cam.ac.uk/research/news/how-wings-really-work
@eshetudinka45505 жыл бұрын
No the upper (cambered shape ) has longer distance than the lower part of the wing, and the reason why the air speed increased on the top is to compensate the distance and reach at equal time at the trailing edge of the wing.