After 7 months of studying to get my private and now in instrument training, I finally understand True Airspeed!!! I could never get an understandable explanation for it, and you got it through my hard head!! Thx!!

Very well done! I'm going to share this video with some of my students.

Best explanation I have found on the different airspeeds! I can actually understand them now thanks to this video! Thank you

I don’t know who disliked this video because this is the best description of airspeed so.

out of all the videos and descriptions ive seen and read,this one is the best. This one makes me truly understand the differences between TAS and IAS. Thank you for this video.,

Thanks this was very good.I have been flying a long time and this is one of the best descriptions of airspeeds that I have ever seen. Thank you for your hard work.

Great video! Thank you for the excellent explanation!

Thanks for simplifying some of these concepts! Great video!

Excellent explanation! it will be great to add a video explaining the density/pressure :)

This is the best explanation of the different sounds that I have ever heard or read. Thank you!

Best video so far on KZfaq that I've found to answer these questions!

Just awesome 😍 keep up the good work. Thanks also

You should've kept TAS the same when talking about GS. If the plane's flying at 200mph and there's a 20mph headwind, the TAS is still 200mph, not 220mph. Only GS is affected by the wind. Like running on a treadmill. Your running speed for instance is 10mph, and the treadmill (headwind in this case) is also 10mph but you're still running the same speed.

The best explanation I have found. Good job

Concepts are explained in very understandable way. Hope we get more topics covered.

Very clear explenations, thank you so much

Thank you, for the thorough explanation!

Great video I love your explanation Thanks

great video!!! Could not have been explained better!!

Thank you! It really simplified the topic

an amazing oversimplification, well done

Amazing, now i understand the new flightsim a bit better :)

Well done. Love the presentation.

Well explained! Good job

Great explanation! Thanks!

types of Airspeed very well explained

Brilliant explanation! Thanks a lot!!!

Easy to understand. Well done.

Perfect! I love this presentation.

Very clear explanation Thank you!

Amazing explanation man!

Great! Very clear explanation.

I really loves your explanation sir, please do another one on air temperatures measurement such as tat, sat, oat, and so on.

This video helped me a lot THANK YOU!!!

Thank you very much for this great video! Best regards from germany!

Excellent explanation!

Excellent video! 👍💪

Really good video on this.

Very well explained. Thanks👍

Best explanation!

Fantastic video.

Great job 👌

thanks, this was great

Very good video, thanks!

thanks for this great explanation vector pilot prep.

This is an amazing video

Thanks for this video really helpful.

OMG! This is an amazing explanation!

Nicely explained 👍👍

Very useful video! Thx

Well explained.

So well explained...

Great video

Excellent. Thanks

Very good explanation..........

Got my thumbs up!

Excellent explanation, do make video on Wind deviation and corrections. Thanks 😊 in advance 👍

Thanks for explanation, it actually could be somewhat shorter, but the video has to be liked.

very good explanation

Wish I had found this video earlier!!

Thanks!

Thank you 👍

For a commercial passenger aircraft in the event of pitot static system failure, then even just knowing the ground speed &altitude from say satellite 🛰 communications wifi would still allow the pilot fly the aircraft. Correct?

Great

Now I understand the relation between Mach and TAS, you sir explained it very well! Thank you very much!

thanks, i get it now :)

I love your video! Can you help me with a concept that I've been struggling to grasp? How is airspeed affected by an aft cg? With less downforce from the tail, and less drag, I believe your true airspeed would be higher. But how would your indicated be affected? Would it also be greater? If my indicated were 100kts with a middle cg, and then we took the exact same conditions, but had an aft cg, would my indicated then be 110kts for instance? Thanks!!

Thank you.

Awesome)

Wow. I actually understood something.

Fantastic

Thank very much ! Very clearly put into words and illustrated. I do have one question: as the speed of sound is a function of temperature, on a cold day at a ground level, will the speed of sound be lower than it would be at that some location at ground level but on a warmer day? In other words, can the speed of sound vary at ground level?

Good job except TAS is how fast you actually move through space. The closer to the ground you are, TAS is closer to IAS. The higher you are, the air molecules are more far apart and you move faster through that space. So your IAS may be the same at 5000ft and 2 10000ft but TAS will be higher at higher altitude. Also take in consideration temp.

awesome

THANK YOU FOR THIS VERY CLEAR INFORMATION VIDEO ABOUT AIRSPEEDS to prepare me before I enroll in Flying School in a couple of months!

why in flight manual cas and eas are given as ias

That was gooood

Hi excellent video , can I use a part of this video in my channel. Planning to fly ceiling limit on airplane and use this to explain. Will give credit and provide link to this video in the description.

Am a new to this so correct me if wrong, but I think what would help is to start with why speed outcomes can be different to the old car speedo in the first place. Car uses wheel rotation on ground, plane uses differences in air pressure to calculate speed. Air speed simply must be measured differently because there is no contact with the ground, which gives different results because air is subject to density influences like altitude, temperature and humidity which affect the outcome of the air speed measuring method. 2:33 is a bit confusing as slowing down from head wind applies to a car on the ground as well so doesn't seem a differentiating factor. The difference is in the way of measuring, one of which uses air and is more subject to its influences, the other not.

bravo

Thanks

So the higher you are the thinner the are so the higher your gs stall speed is right?

The best way to think about this is ground speed is how fast the aircraft is going when you look up and see the aircraft. But what we can't see from the ground is speed at which wind is blowing.. Sometimes you look up and see aircraft going really slow and you wonder how it is staying up in air. what you probably are not seeing is a strong headwind which you need to add to the ground speed to get true air speed. Lift is based on true air speed and not ground speed.

Just a question at 2:01 wouldn’t Ground speed be 180 as aren’t you basically slowing the plane by 20 knots?

Indeed, great explanation. But it doesn't why TAS is said NOT to be affected prevailing wind. Could you explain? Because the video definatly shows an increase in TAS when there is a headwind.

thank you soo much ! I am an aeronautical engineering student, I hope I will be pilot after 5 years

all clear to me, but the difference between tas and ias is tricky. sometimes i think i understand it, but all in all its to high for me haha, maybe my english understanding skills are not enough

Isn't the speed of sound more effected by the medium density than by the same medium's temperature. I mean, I know temperature effects density, but I don't think it's enough to effect the speed of sound that much, right?

03:50 isn’t that wrong though? As the airspeed indicator is connected to the static port as well the pressure inside the chamber changes with the increase in altitude. Therefore, the airspeed indicator is only sensitive to changes in temperature but not to changes in altitude.

Thanks. By the way, why does sound travel slower in cold air? This just isn’t intuitive to me.

Great video but I'm a little confused. If the airspeed indicator uses pitot and static pressure, why is the IAS reduced at higher altitudes due to pressure? Isn't the static pressure reading takes care of it? What about air temperature at higher altitudes? Is temperature taken into consideration for the IAS? Thanks :)

Hello, Sir, I have a question. Is it possible to know the speed of the aircraft if we only know the distance and time that the aircraft will be arriving? Since my problem did not mention other conditions, can I just the formula V=d/t?

If the static pressure decreases with altitude too, shouldn't the airspeed remain the same? Because the difference between static and total pressure musst be the same.

Ground speed would basically be if you saw the shadow of the plane on the ground

@1:55 Why doesn’t groundspeed decrease in a headwind?

Does the speed and direction of the wind affect the true airspeed?

7:34 Wow! So it's not a question of density? I mean the more dense is matter the sound travels through, the higher is its speed. Thus the fastest sound speed is through hard materials, then trough liquids, and then-the slowest-through gas. The lower is the air pressure, the further those molecules are from each other, the farther they have to travel to hit other molecules to conduct that sound wave. Another rule is-the colder the denser. Example: density altitude. So the colder the air, the faster sound travels trough it.

So, if I have to travel 1000km in a plane, which speed should be used to calculate travel time?

So basically if GS is higher, it means we have an advantage because the air/wind is blowing in the direction of travel, right? If we see that Total Air Speed is higher than GS, it means we are at a disadvantage in terms of speed as the wind is potentially blowing in the opposite direction of travel? Can anybody correct me, please? I find this so easy, but at the same time, our human words just dont suffice to make things more simple... edit: And if I understood IAS, it is just the pito measuring the True Air Speed, but it will stop coinciding with the True Air Speed the higher you go due to the instruments itself limitation (and amount of air molecules), (which I hope engineers find a solution to).

is ground speed your speed across the ground or your speed relative to the ground? if i was diving exactly down at 200kts tas would my ground speed be 0 or 200?