@RetreadPhoto I don’t think of it as something to learn. Someone said it in my ground school and it helped me out when I was asked the question in my oral exams. Some people learn easier this way.
2:35 Gravity doesnt decrease much between surface and for example on the ISS. The pressure is essentially just what weight lays above you and with gravity you get a force per area.
Flying 5000 feet true altitude (msl) in Denver you'd be 280 feet under ground. But this is a great video and i might just memorize all 5 if i watch a few more times.
This is how we learned this in Europe. Absolute altitude is normally referred to as "height" (above the airfield) and the altimeter is set to QFE so that the altimeter reads zero feet on the airfield, fine for in the circuit or approach to landing. If the actual atmospheric pressure is applied the altimeter will read the airfield elevation correctly and that is the QNH setting for "true altitude", this is for cross-country flights and needs to be updated from ATC or met station every few hours. Standard or "pressure" altitude is when the altimeter is set to 1013 mb or 29.92" and that is for above the transition altitude so all aircraft are on relative altitudes or flight levels. Density altitude is the correction one needs to make, especially for a hot and/or high airfield, so as to adjust the take-off, landing and cruise performance figures to the local conditions prevailing, it is the deviation from the standard atmosphere model.
I would clarify "Indicated Altitude" is when you set the Kollsman window to local altimeter setting. Many websites and this video depict it incorrectly. Many places will say it's whatever the altimeter is reading, correct but you need to roll in the correct altimeter setting first.
Great explanations..I knew about 3(indicated, density and pressure) true and absolute were new to me..Thanks!As someone else likes to say:A good pilot is always learning! :) BTW, Jon, really like the new intros and outtros!
Great overview....... but: gravity can be considered to be constant at the range of heights that are relevant to GA. I know you're simplifing, but pressure does not drop off because there is less gravity at height. But I'm being a pedant, sorry that's just what I do ☺. Great vids, keep them coming.
As pressure increases, with temperature constant, density increases. Conversely when temperature increases, with pressure constant, density decreases. Air density will decrease by about 1% for a decrease of 10 hPa in pressure or 3 °C increase in temperature.
Nice video dear. My question is once I had to refer to aircraft performance charts what pressure setting do I take in consideration the prevalent pressure at that time (QNH) or the one the one which corresponds to the field elevation of airfield (QFE). For example I had to calculate performance of an aircraft for an airfield whose elevation is 5500 ft the pressure at the place now a days is about 1003 millibars but the pressure corresponds to its elevation is about 850 millibars which should be taken into consideration to calculate take of distance acceleration etc etc.
I don't know why, but I for some reason seem to constantly forget how to read an altimeter; (10k feet arm) and I was looking for a video that kind of quizzes you on guessing the different altimeter readings. I can't find a video like that anywhere even in my online ground school. Please take the time to do a quick video covering this. thank you!!
Read the whole number that is less than shown in both (each) 10,000 needle then the 1000s needle then the actual number on the 20 foot needle. Add them together.
Absolute is (from what you described) altitude in agl ? True is altitude in msl Indicated is my altimeters displayed altitude Is this correct? I don’t know how I’d simplify the last two of density and pressure.
If you set the Kollsman window to the correct pressure, will temperature affect the indicated altitude. I understand that Density altitude is a "feels like" for performance of the aircraft, but will it change the reading of the altimeter . So my question could also be: If pressure remained the same, but the temperature changes would the altimeter have different readings?
I don't understand the difference between true altitude and density altitude?Because you calculate true altitude and denstity altitude,the first the step is to get the PA,then use E6B for the temperature deviation.So both pressure and temperature deviation from the ISA will affect true altitude and density altitude,but how come they are different？Shouldn't they be the same thing?
Pressure altitude is whatever you read when altimeter is set to 29.92, no matter what the outside temperature is. True alt equals pressure alt only on a standard day (29.92"/15C at sea level). True altitude is really a function of indicated altitude (when the correct altimeter setting is set) and outside temperature. You can use an e6b to determine true alt.
thank you you're the best. BTW could you make a video talking about modern aviation and how robots might be able to replace pilots in the future? thanks
Sorry the video was not helpful. Check out our private pilot ground school if you need a more in depth explanation. learn.fly8ma.com/courses/premium-private-pilot-ground-school/
Seems like a wildly innaccurate instrument especially over changing atmospheric conditions over time. You'd be better off bouncing a signal off the surface of the earth and measuring the time it takes to reflect back to you on the plane. Do a video on why GA pilots are such pricks and snobs in their metal spam cans they can barely see out of, and think they own the air and can make all kinds of rules for everyone to follow, and other reasons why ultralight pilots hate them so much...
Pilots, I'm not the only one. Most of us leave the forums because of GA hallway monitor pilots running their mouth always about bending over backwards for dick ass FAA rules. Nobody wants to hear that crap.
The instrument you describe would be wildly inaccurate also, just for other reasons. Any roll or pitch would give you a false over reading. The correction for that would be much more complex than the pressure setting on a tradition altimeter.
I always remember true altitude as “true blue,” meaning altitude above sea level, or the blue ocean.
I will officially never forget it now lol
I'm confused now. Is True altitude the Altitude above MSL or Above Seal Level??
@@mnflyin5549 True Alt= MSL Absolute Alt= AGL
Love this way of remembering it! Definitely won’t forget now.
Glad it helped! Stay safe up there!
thanks for being the only non-boring/up-to-date pilot youtuber
Hey?! www.youtube.com/@TripleSevenAviationFlashcards
Absolute altitude you can think of like this- AGL. Above Ground Level. As simple as that. Great video for the nubes.
The compass stuff and altitude in my private pilot ground has got me itching my head.
This video explains the altitude stuff well.
OMG ! I love the things you do with analogies!!!
wish I had this explained like this a decade ago when I started flying
Amazing video! 👍
I’ve learned to think of it as:
“Absolute = AbSOILute” as in soil of the ground.
“True = Blue” as in sea level.
@RetreadPhoto I don’t think of it as something to learn. Someone said it in my ground school and it helped me out when I was asked the question in my oral exams. Some people learn easier this way.
2:35 Gravity doesnt decrease much between surface and for example on the ISS. The pressure is essentially just what weight lays above you and with gravity you get a force per area.
Flying 5000 feet true altitude (msl) in Denver you'd be 280 feet under ground. But this is a great video and i might just memorize all 5 if i watch a few more times.
Thank you so much..I know this video is 3yrs old but it helped me so much..Great way to explained it..
A good acronym for me to remember the five altitudes is IPDAT!
This is how we learned this in Europe. Absolute altitude is normally referred to as "height" (above the airfield) and the altimeter is set to QFE so that the altimeter reads zero feet on the airfield, fine for in the circuit or approach to landing. If the actual atmospheric pressure is applied the altimeter will read the airfield elevation correctly and that is the QNH setting for "true altitude", this is for cross-country flights and needs to be updated from ATC or met station every few hours. Standard or "pressure" altitude is when the altimeter is set to 1013 mb or 29.92" and that is for above the transition altitude so all aircraft are on relative altitudes or flight levels. Density altitude is the correction one needs to make, especially for a hot and/or high airfield, so as to adjust the take-off, landing and cruise performance figures to the local conditions prevailing, it is the deviation from the standard atmosphere model.
I would clarify "Indicated Altitude" is when you set the Kollsman window to local altimeter setting. Many websites and this video depict it incorrectly. Many places will say it's whatever the altimeter is reading, correct but you need to roll in the correct altimeter setting first.
Great explanations..I knew about 3(indicated, density and pressure) true and absolute were new to me..Thanks!As someone else likes to say:A good pilot is always learning! :)
BTW, Jon, really like the new intros and outtros!
Great job! Well explained.
Thanks!
great video!
Great video! Keep it up. I like the 2 min version. Also like longer ones, BOTH are best! Thanks
Thank u
Great job. Thx
Thanks for the break down 🤙🏾
I always remember Absolute and Agl being the same since they both begin with the letter A.
Thanks!
No problem!
Thank you so much you have helped me a lot
Thankfully you can use an E6B to calculate density altitude, doing the math and memorizing the variables is a pain. To me anyway.
Great overview....... but: gravity can be considered to be constant at the range of heights that are relevant to GA. I know you're simplifing, but pressure does not drop off because there is less gravity at height. But I'm being a pedant, sorry that's just what I do ☺. Great vids, keep them coming.
Yeah. It drops because the column of air above you is smaller, thus less air mass above you and less weight from the air causing static pressure.
3:14 Hot Heat Hight the 3 H's of hard performance
Hi hot humid
realy edjucational video
As pressure increases, with temperature constant, density increases. Conversely when temperature increases, with pressure constant, density decreases. Air density will decrease by about 1% for a decrease of 10 hPa in pressure or 3 °C increase in temperature.
This was amazing!
Happy that it helped ya!
Good video not hard to work out. thank you
Thank you, kind sir!
liked n subscribed
Nice video dear. My question is once I had to refer to aircraft performance charts what pressure setting do I take in consideration the prevalent pressure at that time (QNH) or the one the one which corresponds to the field elevation of airfield (QFE). For example I had to calculate performance of an aircraft for an airfield whose elevation is 5500 ft the pressure at the place now a days is about 1003 millibars but the pressure corresponds to its elevation is about 850 millibars which should be taken into consideration to calculate take of distance acceleration etc etc.
but yea barometric scale on the aircraft altimiter is 29.92 inch hg altimiter will read pressure altitude, can you explain me pressure altitude more ?
Thankyou so much brother, I learned something. May you always follow GOD's guidance😁😊
I don't know why, but I for some reason seem to constantly forget how to read an altimeter; (10k feet arm) and I was looking for a video that kind of quizzes you on guessing the different altimeter readings. I can't find a video like that anywhere even in my online ground school. Please take the time to do a quick video covering this. thank you!!
Read the whole number that is less than shown in both (each) 10,000 needle then the 1000s needle then the actual number on the 20 foot needle. Add them together.
is it density for temperature ?
That was very helpful, thank you
Great video! Awesome way to explain!!
Thank you.👍
It's going to take me about 8 more videos to grasp this concept
You'll get there!! It can be difficult for sure
Nice new intro!
Absolute is (from what you described) altitude in agl ?
True is altitude in msl
Indicated is my altimeters displayed altitude
Is this correct? I don’t know how I’d simplify the last two of density and pressure.
Absolute = AGL
True=MSL
Pressure Altitude = Altitude read off of altimeter set at 29.92
Density Altitude = Pressure Alt + nonstandard temp
are you located in Sarasota FL?
Hurricane, Utah!
If you set the Kollsman window to the correct pressure, will temperature affect the indicated altitude. I understand that Density altitude is a "feels like" for performance of the aircraft, but will it change the reading of the altimeter . So my question could also be: If pressure remained the same, but the temperature changes would the altimeter have different readings?
Bro it's non of your business
Good explanations. Also a nice take on the Peter McKinnon vibe.
Why we use PA to calculate performance of A/C instead of DA
I don't understand the difference between true altitude and density altitude?Because you calculate true altitude and denstity altitude,the first the step is to get the PA,then use E6B for the temperature deviation.So both pressure and temperature deviation from the ISA will affect true altitude and density altitude,but how come they are different？Shouldn't they be the same thing?
True altitude is the vertical distance of your airplane above sea level. Whereas density altitude is pressure altitude corrected for temperature.
for a absolute altitude you want to use a radio altimiter
So it’s better to fly when it’s cold
what are the three ALTIMETER ERRORS
Is true altitude assuming a standard temperature of 15C? ... And pressure altitude would be assuming 15C and 29.92 barometric pressure?
Pressure altitude is whatever you read when altimeter is set to 29.92, no matter what the outside temperature is. True alt equals pressure alt only on a standard day (29.92"/15C at sea level). True altitude is really a function of indicated altitude (when the correct altimeter setting is set) and outside temperature. You can use an e6b to determine true alt.
but altimiter will reads pressure altitude
10 apr 2020 11:58 am edt:thanks
Where are you located?
Loved the cut to Trump!!!
love the trump bit
Don't forget a good pilot and aircraft will always work in Metric measurement!
i was confuse because hes going too fast and there was things he didnt mention
thank you you're the best. BTW could you make a video talking about modern aviation and how robots might be able to replace pilots in the future? thanks
👍
What amount of time per day do you recommend be used for studying in order to become a professional pilot ?
3 Dislikes already and he hasn't even said a word?
Bryan Austyn Downing likely an ex girlfriend.
harsh right?
Bryan Austyn Downing lol. Takes all kinds, best thing to do is be happy and stay the course, it’s a good channel 🤙
Haters I guess...
Good information but I won't be asking an Astro Not anything since thay are all fake.
Well that didn't really help
Sorry the video was not helpful. Check out our private pilot ground school if you need a more in depth explanation. learn.fly8ma.com/courses/premium-private-pilot-ground-school/
80'c outside, feels like shit
I hope you voted for Trump. 👍🏻😁I’ll still watch your videos if you didn’t! 😇
Seems like a wildly innaccurate instrument especially over changing atmospheric conditions over time. You'd be better off bouncing a signal off the surface of the earth and measuring the time it takes to reflect back to you on the plane.
Do a video on why GA pilots are such pricks and snobs in their metal spam cans they can barely see out of, and think they own the air and can make all kinds of rules for everyone to follow, and other reasons why ultralight pilots hate them so much...
Ultralight “pilot”
Pilots, I'm not the only one. Most of us leave the forums because of GA hallway monitor pilots running their mouth always about bending over backwards for dick ass FAA rules. Nobody wants to hear that crap.
The instrument you describe would be wildly inaccurate also, just for other reasons. Any roll or pitch would give you a false over reading. The correction for that would be much more complex than the pressure setting on a tradition altimeter.
Its not wildly inaccurate if you set it correctly.
I dont like this guy.
what do you exactly do when you 'dial' the instrument ?? you set it to what ?