Turboprop Torque, ITT, NP, and %NG Explained (in Plain English)

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I recently got checked out in a Kodiak 100, a 750hp turboprop bush airplane, and it was a blast! This was my first turboprop experience and so I had to learn a lot of new terms and concepts in order to fly this airplane, and I wanted to share what I learned here in case it might help anyone else. It might seem confusing at first but I promise with some practice and repetition, it gets WAY easier!
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Опубликовано:

28 апр 2024

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Комментарии : 48

@AirplaneAcademy 27 дней назад

Hey guys! I wanted to let you know I just launched an "Insiders" Newsletter where once a week I'm sharing an important lesson I've learned in aviation, links to my latest content so you don't miss out, and links to any other interesting or helpful content I've found. I'm also working on a HUGE project I can't announce yet but I'm going to be sharing more behind the scenes info with Insiders first - Subscribe (it's free) at: airplaneacademy.com/insiders

@scottsweet13 Месяц назад

My fellow steveo fans will appreciate this one

@fishhisy Месяц назад

You can always tell a new turboprop pilot when they bounce off the prop governor, a good technique is stand on the brakes and smoothly apply enough power until the governor is holding the prop at the speed you need and then you can briskly bring the power lever up to take off power.

@stu3tristan9x9 Месяц назад

The best explanation I have ever seen a model of clarity

@haxi52 Месяц назад

Man, I love the sound of a turbo prop spinning up!

@xaisies Месяц назад

This is, oddly, going to help me in fs2020 in my Kodiak. Good timing!

@Zfx13 Месяц назад

All I wanna say is, GOD BLESS U BRO!!!!!

@923rk Месяц назад

Absolutely love your videos, the way you present the content is excellent!

@AirplaneAcademy Месяц назад

Thank you!

@renardinosrenard9581 28 дней назад

Thanks for good explanation

@Trevor_Austin 29 дней назад

Your terminology is very engine and type specific. I’ve flown three turboprops, Jetstream 31/31 with Garrett (now Allied Signal) TPE 331, Fokker 27 with Rolls Royce Dart 1830 and Fokker 50 with Pratt and Whitney PW125B. Here’s my thoughts: Torque may be displayed as ft.lbs, psi or a percentage. It’s just a number. You learn the numbers. ITT really does need looking at during a start and on some types during the cruise. Np is almost irrelevant. You typically set it and leave it. The Fokker 27 was an exception to this. Ng ends up and being what it is. The last turboprop I flew was a Fokker 50. Next to a jet, it to be one of the simplest aircraft a person can fly.

@JohnVanderbeck 11 дней назад

Some don't even have a prop lever.

@pilotalex5677 Месяц назад

Nice operating description. I have a question though, at landing phase what are the settings to go in case of a go around? Since your prop is fully foward I guess you can't slam the throttle full time to have all the power. In that case do you pull the throttle slightly back before hitting on the throttle full power ? (Kind of a piston like action )

@adamcorby804 Месяц назад

Great video! So if the prop is set at like 2000, and you increase torque, for the prop to stay at 2000 it would increase in pitch hence more thrust and forward speed right?

@AirplaneAcademy Месяц назад

Correct

@andrewahern3730 Месяц назад

The over torque/temp is obvious when you think about it. Down low the air is dense, so big power is available. Up high, the air is so thin, it doesn't have the thermal capacity to cool.

@BPond7 28 дней назад

What does NP and NG stand for? I know what their gauges mean, but what do the letters stand for?

@xenimaging Месяц назад

Bro, are you gonna tell us how and why you are flying a Kodiak 100????

@andrewagner2035 Месяц назад

Nice one. What is the hire and fuel cost of the Kodiak per hour. Was that your Dad in the right seat?

@AirplaneAcademy Месяц назад

It's burning like 350 pounds per hour in cruise so roughly 53 gallons per hour ish depending on how hard you're pushing it. And yes that was my dad in some of those clips.

@Steve-zt8ff Месяц назад

When are you getting Kodiak

@TrainSounds Месяц назад

What about for jet aircraft?

@jamestunedflat8942 Месяц назад

What would a turbine failure be like in a turboprop? (Other than expensive) would you hear the destruction, or would you be fooled into trying to air start the engine on the way down, wasting time in the process?

@MrSuzuki1187 Месяц назад

I have had 2 PT6 engine failures and they are nothing less than EXPLOSIVE! When a turbine disc, spinning at 44,000 rpm, loses a blade, the engine disintegrates in a dramatic fashion. There is a crunching sound that on my first failure made me think we had hit some object, but when the prop autofeathered, I knew we had suffered a catastrophic failure.

@jamestunedflat8942 Месяц назад

@@MrSuzuki1187 very happy to hear your response. Mostly because you stuck two dead stick landings and are recalling the events, but also to sate my curiosity. Thank you.

@timsteffen3035 Месяц назад

Patey had a pretty good video on PT-6 engine failure: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-pgpf5ktKVBc.htmlsi=0JueWXYrVphXciCP

@schweetmunkie Месяц назад

Where did you go to get this training?

@AirplaneAcademy Месяц назад

Combo of flying with a mentor pilot for about 40 hours and then did K100 initial training with Parkwater Aviation in Spokane, WA

@schweetmunkie Месяц назад

@@AirplaneAcademy Thanks for the info! I'd love to fly with you some time. I'm a CMEL and CFI student over at AFW.

@simisozwane1452 29 дней назад

Torque=moment?

@HyperSpaceProphet Месяц назад

You should re-title this as PT-6 rather than Turbine. There ARE other turbines in turboprop aircraft. Your video, while great, is totally Pt-6 centric. The broad strokes are the same, but the differences are important.

@Trevor_Austin 29 дней назад

You are totally correct.

@JohnVanderbeck 11 дней назад

Sacrilege. There are only pt6's :)

@timw6697 Месяц назад

Also.. torque… left turning tendencies 😀

@FlyingNDriving 15 дней назад

There's no such thing as RPMs...RPM is already plural

@kevinbarry71 Месяц назад

FYI, torque is measured in lb ft, not foot lbs.

@andrewahern3730 Месяц назад

Literally the same thing. Order doesn't matter for multiplication

@kevinbarry71 Месяц назад

@@andrewahern3730 you are amazingly wrong. But carry-on

@andrewahern3730 Месяц назад

@@kevinbarry71 lol, let's hear it. Explain why I'm wrong

@kevinbarry71 Месяц назад

@@andrewahern3730 you are a monument to the Dunning Krueger effect. It doesn't mean what you think it means. It's a definition. Someday when you get out of your mother's basement perhaps you can bother to look it up

@isaacfriedman1698 Месяц назад

@kevinbarry71 its measured in Ft-Lb, at leasts on the G1000 in the kodiak And Caravan....

@secondwindmusicproductions Месяц назад

Great info and well explained. But I must complain about your use of the term "rpms". As I am sure you know, rpm stands for revolutions per minute, or how many revolutions in one minute. If you say "rpms", you are literally saying "revolutions per minutes". So how many minutes? That usage is ambiguous and incorrect. The only time "rpms" is correct is when comparing two different instances like, "the rpms differed by 200". Sorry to be picky but the continued incorrect usage is extremely distracting.

@JustSayN2O Месяц назад

no its not

@sircrapalot9954 Месяц назад

It’s incorrect usage and extremely distracting of you to not capitalize RPM. The colloquial use of “RPMs,” on the other hand, is quite common and acceptable.

@andrewahern3730 Месяц назад

What are you talking about? Nobody is counting discreet revolutions. I think some heavy equipment logs usage in "hours @ 2k RPM", but that is by far the exception, not the rule.

@Trevor_Austin 29 дней назад

I find the usage rpm’s annoying.