Dozen, that was a good presentation. For someone who can't understand the relativity of air density, try explaining the difference between INDICATED airspeed and TRUE airspeed. One of the best examples, there's a video of a U-2. He's level at FL700, indicated of 104 knots, which is (true) of 471 knots, and mach .707. Now, want to really throw a wrench into the gears, bring in Waverider effect at hyper mach in the mesosphere.
Very nice video! Just one quick correction though, the speed of sound (at least in fluids) is actually a function of the temperature of the fluid and not the density. The speed of sound is derived from the Kinetic Theory of Gases which describes how the molecular speed of gas particles is a dependent upon temperature only. Thus the speed at which molecules can transfer information to each other (i.e. the speed of sound) is a function of temperature only. Temperature and density are related though for gasses so there is some correlation between density and the speed of sound but it isn't a causal relationship.
Fine tutorial , ' xCepting where you say "" mach 0.12 "" is 'approx' the trans-sonic realm of da speed of sound [ @ 5:53 ] , but we all knew what you meant, and the aforementioned temperature conundrum.
So does a bullet break the sound barrier in the barrel? Cool video and great explanation, I hadn't ever wondered this before now. lol I was thinking about another youtuber that was down range letting bullets pass over them and I don't really remember
Great video! Thank you so much for taking the time to explain! I have a question, I'm in college doing an aviation with technology degree for a professional pilot, will that be helpful to get a pilot slot in the Air Force?
Wouldnt it be easier to say that the speed of sound is more closely related to temperature than air density? the colder it is the lower the speed of sound? even in your watr example, sound travels faster at deeper depths because the water is colder. i guess in the end its really 6 in one and half a dozen (see what i did there) in the other. colder is denser.
If I’m understanding your comment correctly you have the right idea with temperature however air pressure is determined by more than just temperature, for example at low altitudes you have all of the ‘weight’ of the air above it pushing down and compressing the air making it more dense
@@matthewthomas2807 what about an inversion layer? Climbing out of KPBI the other day it was +20 C at FL200 (not uncommon in that area of the world) but it quickly cooled off above FL240. Its very difficult to measure density inside the cockpit, but very easy to get TAT, SAT and ISA deviation. The colder it is, the lower my IAS and higher MACH. Realistically we are talking only about 3-4 knots for large temp ranges, so its more a technical discussion than what actually matters in reality. But an aircraft say doing a fly by in KCOS in December at 400kts, has a higher likely-hood of accidentally breaking the sound barrier than the same aircraft in August, Is it air density or temp? I say its both, its just that temp is something we can feel and measure easier. I find it also easier to discuss in terms of temp with new pilots instead of density because then they get confused about density altitude. BUt to be clear, everything in this video is correct, I am not disputing anything Dozen said. Im just throwing out some discussion. its why we are here.
@@matthewthomas2807 Check out my comment above (you can sort by new to find it faster) for an explanation on how the speed of sound for gasses is actually only a function of the density
@@jacobdewey2053 yes I was trying to explain it with using weight of air to explain density, I know it’s a very imperfect explanation but it can be very hard to know what peoples backgrounds are on this app, I’m a pilot but explaining things admittedly isn’t always my forte
Sorry, but the speed of sound in air, or for most gasses in general, doesn’t have anything to with density. The equation for the speed of sound is proportional to the square root of total temperature. You’re trying to explain compressibility effects and shockwaves which are a function of density, but the value for the speed of sounds is independent of density.
![Megan Thee Stallion - Mamushi (Remix) [feat. TWICE] [Official Audio]](http://i.ytimg.com/vi/5c0_u9PsrsQ/mqdefault.jpg)
Great video, would love to see more!
Great Stuff Dozen.
Much appreciated
I was trained at Lasham UK on gliders, one of my instructors was Peter Twiss, the first pilot to go past 1000mph
Great presentation!
Dozen, that was a good presentation. For someone who can't understand the relativity of air density, try explaining the difference between INDICATED airspeed and TRUE airspeed. One of the best examples, there's a video of a U-2. He's level at FL700, indicated of 104 knots, which is (true) of 471 knots, and mach .707. Now, want to really throw a wrench into the gears, bring in Waverider effect at hyper mach in the mesosphere.
Very true, fluid dynamics are amazing
Outstanding explanation. Thank you.
Nice patch! Gig'em 👍
Excellent explanation. You are an amazing teacher as well as an awesome pilot. Thank you for all you do for all of us. Have a great day !!!!❤️
Great explanation with super nice graphics! Greetings from Germany😄
I love how your explanations are perfectly concise and understandable! Great video!
Thank you Nick!
Learned a lot. Love it!
Very nice video! Just one quick correction though, the speed of sound (at least in fluids) is actually a function of the temperature of the fluid and not the density. The speed of sound is derived from the Kinetic Theory of Gases which describes how the molecular speed of gas particles is a dependent upon temperature only. Thus the speed at which molecules can transfer information to each other (i.e. the speed of sound) is a function of temperature only. Temperature and density are related though for gasses so there is some correlation between density and the speed of sound but it isn't a causal relationship.
Enjoying the content and learning a lot! Keep up the good work and your channel is gonna go off the charts!
This is indeed an excellent and scientifically accurate explanation and overall briefing. Outstanding (as always) Dozen
Fine tutorial , ' xCepting where you say "" mach 0.12 "" is 'approx' the trans-sonic realm of da speed of sound [ @ 5:53 ] , but we all knew what you meant, and the aforementioned temperature conundrum.
these videos are great!
How many years were you in and why did you leave? Awesome videos!
Great video
So does a bullet break the sound barrier in the barrel? Cool video and great explanation, I hadn't ever wondered this before now. lol I was thinking about another youtuber that was down range letting bullets pass over them and I don't really remember
Great vid Doz but the X1 was rocket not jet powered 👍🏼
Did you to to TAMU and do the Corps?
Yup. He was class of '08, I think. I can't remember what outfit he was in.
Great video! Thank you so much for taking the time to explain! I have a question, I'm in college doing an aviation with technology degree for a professional pilot, will that be helpful to get a pilot slot in the Air Force?
Do you hear the boom when you come out of mach 1, once the sound catches up to you?
Propeller tips go supersonic that is why they are so noisy on take off until you reduce the RPM.
Is there a prop aircraft that can, in theory, fly at Mach 1 or greater?
Wouldnt it be easier to say that the speed of sound is more closely related to temperature than air density? the colder it is the lower the speed of sound? even in your watr example, sound travels faster at deeper depths because the water is colder. i guess in the end its really 6 in one and half a dozen (see what i did there) in the other. colder is denser.
If I’m understanding your comment correctly you have the right idea with temperature however air pressure is determined by more than just temperature, for example at low altitudes you have all of the ‘weight’ of the air above it pushing down and compressing the air making it more dense
@@matthewthomas2807 what about an inversion layer? Climbing out of KPBI the other day it was +20 C at FL200 (not uncommon in that area of the world) but it quickly cooled off above FL240. Its very difficult to measure density inside the cockpit, but very easy to get TAT, SAT and ISA deviation. The colder it is, the lower my IAS and higher MACH. Realistically we are talking only about 3-4 knots for large temp ranges, so its more a technical discussion than what actually matters in reality. But an aircraft say doing a fly by in KCOS in December at 400kts, has a higher likely-hood of accidentally breaking the sound barrier than the same aircraft in August, Is it air density or temp? I say its both, its just that temp is something we can feel and measure easier. I find it also easier to discuss in terms of temp with new pilots instead of density because then they get confused about density altitude. BUt to be clear, everything in this video is correct, I am not disputing anything Dozen said. Im just throwing out some discussion. its why we are here.
@@matthewthomas2807 Check out my comment above (you can sort by new to find it faster) for an explanation on how the speed of sound for gasses is actually only a function of the density
@@windrideractual read above
@@jacobdewey2053 yes I was trying to explain it with using weight of air to explain density, I know it’s a very imperfect explanation but it can be very hard to know what peoples backgrounds are on this app, I’m a pilot but explaining things admittedly isn’t always my forte
OATS
Sorry, but the speed of sound in air, or for most gasses in general, doesn’t have anything to with density. The equation for the speed of sound is proportional to the square root of total temperature. You’re trying to explain compressibility effects and shockwaves which are a function of density, but the value for the speed of sounds is independent of density.
Trying to find something you said that was correct in the comment. Still searching…
they should attach rockets to whips, that way you don't need airplanes.
Fighter Pilots??? Those things hanging off your wings flykid are called Bombs. YOU are a bomber pilot-- ""bombs away bozo-boys!""