The really amazing airplane is the DeHavilland Dash 7. Flown by Rocky Mountain Airways to the ski resorts in Colorado out of Denver, these planes and air crews do things in blinding snowstorms that makes me break out in a cold sweat. We call them the..."White Knuckle Specials"...dam...these guys are good...
The "Porters" (the PC-6 anyway) were sold with a proviso that they could take off within a distance of 640 feet (195 m) on any ground, in almost any Met conditions.
Now that is how the aluminum should be thrown into the air.
Watching a C-182 take off after watching a PC-6 take off is like watching a parking lot.
What do you mean the prop is not connected to the engine? Is the turbine not part of the engine? Do mean the the prop is not connected to the high pressure compressor section of the engine? Or do you mean the prop is connected to a gear reducer? I ask because how else would you turn the prop at such speeds with jet exhaust as you put it? Sorry for the questions, I just wanted some clarity.
@jdubincali The jet exhaust from the CT wheel (compressor turbine) is the "fluid Coupling" to the power turbines that turns the propeller not the engine itself. the engine just produces hot gas for the power tubines.
The other type of Turboprop would be called direct drive where the prop, gearbox and engine are all directly connected. Examples are the Allison T-56 or Honeywell (Garrett) TPE-331.
@cyprixx A KingAir uses the same engine Pratt & Whitney Canada PT-6A motor as the Pilatus. Some like the Kingair B100 will use a TPE-331 engine.
But to answer your Question a turboshaft and a turbo-prop are the same thing. one turns a propeller directly thru a reduction gearbox, the other turns a shaft that goes into a combining or main transmission that sends torque to the main rotor blade and a fraction of the torque to the tail rotor gearbox.
@cyprixx Also, all helicopters are free turbine engines except for the Pratt T-73 on the Sikorsky S-62/CH-54 Skycrane that I know of. wether it's a PT-6B twinpack, Allison 250, GE's CT-7/T-700, Garrett T-55..... Free turbine engines where the Compressor Cumbustor and hot section (N1, CT Wheel, GG rotor whatever it's name) is called the gas producer. Which all it does it throttle up and down to produce hot gas to turn the power turbines to produce torque. Basically the smae as a torque converter
@mojorichie Thanks! I just took a class on turbines as I am going to school for my A&P...I enjoy studying powerplants more so than airframe, I but I digress...One of my goals is to land a job at Pratt & Whitney...That would be sweet! I really appreciate your time in clarifying my question.
It's a free turbine engine (prop uses turbine from engine exhast) and not a geared engine (propeller geared to the engine core) because geared engines need less stress on startup but on the PT6 free turbine engine it doesn't really matter, the propeller's strong enough
I am not sure about all turbine engine aircraft but on the ones I have worked with (including P3 Orions) the engine is pretty much at or near full RPM when it is taken out of ground idle.
The forward motion is controlled by the Prop Pitch, not by the Engine RPM.
If you fly on an ATR 42 notice that the engines are fully wound up before any forward motion starts.
Then the Prop Pitch is thrown in, and the paddles grab some air.
The P3 would snap your neck on a full pitch takeoff.
I know that Geared Turbines work on a marginally different set of principles than Free Turbines.
Even though most of the internal components do the same job, less the gearbox.
Most, if not all, Turbines are not comfortable at low RPMs.
The Allison T56 is what I am most familiar with and those things didn't even start until they reached 9,000+ RPM..and they operate at about 14,000 RPM (3,750 shp) (war emergency power was about 16,000 RPM)
@JetFlyyer lots of modern helicopters use turbine engines in a similar way, actually. it's quite interesting to see them with the covers off, i'm just getting started with them in my A&P school.
its a version of the PT-6, reverse flow, free turbine. The propeller is not physically connected to the engine but uses jet exhaust. You can turn the prop and the engine doesnt move. Most of the engine power is delivered to the propeller rated in shaft horsepower however a small amount of thrust is achieved from the exhaust stacks. One of the best engines ever created.
an easy way to explain what a turbo prop is is by saying that it's essentially a jet powered propeller aircraft. it uses a turbine power plant. what that means is that as opposed to the hot gasses produced by a jet engine providing the power necessary to get the aircraft rolling directly; those hot gasses spin other fan blades attached to a drive shaft that spin the propeller.
Turboprop engines are a type of aircraft powerplant that use a gas turbine to drive a propeller, while a non-turbo prop uses a standard 4 stroke engine to turn the propellor
PT6s have a separate shaft for the gas generator and for the prop, and they start with the prop in feather. The prop barely moves at all until the gas generator comes up to idle RPM, then the prop comes out of feather and picks up speed. So, the noise you're hearing is the prop unfeathering and getting up to idle RPM.
The really amazing airplane is the DeHavilland Dash 7. Flown by Rocky Mountain Airways to the ski resorts in Colorado out of Denver, these planes and air crews do things in blinding snowstorms that makes me break out in a cold sweat. We call them the..."White Knuckle Specials"...dam...these guys are good...
raginroadrunner 2 months ago
Imagine an airliner the size of a 747 with one engine in the nose for power...why not??... this plane has it???
raginroadrunner 2 months ago
One of the better flying machines.
There are only a couple of planes that I would rather have.
When you go to the Pilatus website they won't even begin to tell you the base price on one of these jewels.
I wonder how much I would have to win in the Lottery to take one home.
hammerogod 3 months ago
@hammerogod..it used to be illegal to own and fly one in the US....why??? very short take off and landing..and I mean ..."Short"...get the picture???
raginroadrunner 2 months ago
@raginroadrunner
Yeah....
Pilatus sorta redefined the meaning of STOL.
The "Porters" (the PC-6 anyway) were sold with a proviso that they could take off within a distance of 640 feet (195 m) on any ground, in almost any Met conditions.
Now that is how the aluminum should be thrown into the air.
Watching a C-182 take off after watching a PC-6 take off is like watching a parking lot.
hammerogod 2 months ago
@hammerogod...and these abilities of this ship can be used in a less than desirable fashion....our Border Patrol has enough to worry about.
raginroadrunner 2 months ago
@raginroadrunner
Heh...yes.
I live 30 miles north of the Mexican border.
There are PLENTY of place I could land and hide a Porter.
The whole area between Lordsburg and Las Cruces is just one big landing strip.
South of Carlsbad is that way too.
And Arizona is ALL landing strip (don't tell 'em I said that).
hammerogod 2 months ago
love it
kirklandelectricicnc 3 months ago
What a chill aircraft.
Trip7Jinxy 3 months ago
I think I just eargasmed
MetalJaXtA666 4 months ago
great swiss plane :D
Sven2Perroy 4 months ago
Why do turboprops always start with the prop fully feathered?
billt460 6 months ago
@billt460
Because they are shut down like that.
NateTheGreatPilot 5 months ago
Nice
ninoboeing 6 months ago
the propeller is connected to the engine through a gearbox reduction since the main shaft spins the other way.
Mondscheinfpv 8 months ago
Long live the PT6.
RandomPerson8492 8 months ago
I like how it looks happy and smiling.
zeetek007 9 months ago
Looks like his right main tire is a bit low.
MultiCessnaPilot 1 year ago
LoL It looks like it smiles
KeTeVemCovers 1 year ago
What do you mean the prop is not connected to the engine? Is the turbine not part of the engine? Do mean the the prop is not connected to the high pressure compressor section of the engine? Or do you mean the prop is connected to a gear reducer? I ask because how else would you turn the prop at such speeds with jet exhaust as you put it? Sorry for the questions, I just wanted some clarity.
jdubincali 1 year ago
@jdubincali The jet exhaust from the CT wheel (compressor turbine) is the "fluid Coupling" to the power turbines that turns the propeller not the engine itself. the engine just produces hot gas for the power tubines.
The other type of Turboprop would be called direct drive where the prop, gearbox and engine are all directly connected. Examples are the Allison T-56 or Honeywell (Garrett) TPE-331.
mojorichie 1 year ago
@mojorichie So would a model like the Beech King Air utilize the same system? Or, would that be a turboshaft like the helicopter turbines?
cyprixx 11 months ago
@cyprixx A KingAir uses the same engine Pratt & Whitney Canada PT-6A motor as the Pilatus. Some like the Kingair B100 will use a TPE-331 engine.
But to answer your Question a turboshaft and a turbo-prop are the same thing. one turns a propeller directly thru a reduction gearbox, the other turns a shaft that goes into a combining or main transmission that sends torque to the main rotor blade and a fraction of the torque to the tail rotor gearbox.
mojorichie 11 months ago
@cyprixx Also, all helicopters are free turbine engines except for the Pratt T-73 on the Sikorsky S-62/CH-54 Skycrane that I know of. wether it's a PT-6B twinpack, Allison 250, GE's CT-7/T-700, Garrett T-55..... Free turbine engines where the Compressor Cumbustor and hot section (N1, CT Wheel, GG rotor whatever it's name) is called the gas producer. Which all it does it throttle up and down to produce hot gas to turn the power turbines to produce torque. Basically the smae as a torque converter
mojorichie 11 months ago
@mojorichie Thanks! I just took a class on turbines as I am going to school for my A&P...I enjoy studying powerplants more so than airframe, I but I digress...One of my goals is to land a job at Pratt & Whitney...That would be sweet! I really appreciate your time in clarifying my question.
jdubincali 10 months ago
I SOOOO want to fly one of these!
HyperSpify 1 year ago
i have one of a dhc-4 ? caribou i believe with this engine.
It was originally a radial fitted aircraft with the pt6
Kopihucky 1 year ago
Fake video, fake turbo prop, fake turbo prop sound, fake feel and fake smell. If I were your friend...I'd be fake...
zcg3 1 year ago
Amazing!
katie10310 1 year ago
why dose it start up with a course pitch?
gefferzz 1 year ago
@gefferzz
It's a free turbine engine (prop uses turbine from engine exhast) and not a geared engine (propeller geared to the engine core) because geared engines need less stress on startup but on the PT6 free turbine engine it doesn't really matter, the propeller's strong enough
Airshow2010 1 year ago
@gefferzz
I am not sure about all turbine engine aircraft but on the ones I have worked with (including P3 Orions) the engine is pretty much at or near full RPM when it is taken out of ground idle.
The forward motion is controlled by the Prop Pitch, not by the Engine RPM.
If you fly on an ATR 42 notice that the engines are fully wound up before any forward motion starts.
Then the Prop Pitch is thrown in, and the paddles grab some air.
The P3 would snap your neck on a full pitch takeoff.
hammerogod 2 months ago
@gefferzz
Also:
I am NOT an expert on Turbo Props.
I know that Geared Turbines work on a marginally different set of principles than Free Turbines.
Even though most of the internal components do the same job, less the gearbox.
Most, if not all, Turbines are not comfortable at low RPMs.
The Allison T56 is what I am most familiar with and those things didn't even start until they reached 9,000+ RPM..and they operate at about 14,000 RPM (3,750 shp) (war emergency power was about 16,000 RPM)
hammerogod 2 months ago
Fake...
zcg3 1 year ago
@zcg3 How THE hell is this fake????
Pendragon1989 1 year ago
@zcg3 nice one....XD
fraekkchen 1 year ago
@zcg3 Your being disruptive to the video. Give me a reason why this is fake?
It looks like a turbo prop
It sounds like a turbo prop
And if I was there, it would
feel and smell like a turbo prop. How is that fake my friend?
Corvette35000 1 year ago
Aint no bett'r sound in the world than a turbine winding up. I can smell 'er rich kerosene scent right after light off.
sdhen414 1 year ago
which is better plane PC12 or Cessna Caravan
emforty2 1 year ago
Looks like a smiling catfish, the exhaust are the whiskers.
mpwelk 1 year ago
The intake under the spinner looks like a smile.
fernfeyes 1 year ago
turboprop aircraft always start up with a whining noise much like a helicopter.
JetFlyyer 1 year ago
@JetFlyyer lots of modern helicopters use turbine engines in a similar way, actually. it's quite interesting to see them with the covers off, i'm just getting started with them in my A&P school.
EliteMadHornet 1 year ago
Wow it sounds EXACTLY like a King Air! If only it didnt have the T-tail but rather a V tail That would Be C00L!
phantom60504 1 year ago
That's quite a propeller there...
ATLRCFlyer 1 year ago
Swiss Army Knife of Aircraft. very nice Ride.
drumdude46 2 years ago
This is a Jet in all essence other than the Prop. Best plane made
cessnawings67 2 years ago
That sounds so cool.
shstrang98 2 years ago
a symphony to my ears
ichbintharaka 2 years ago 50
@ichbintharaka INDEED
walkandlookup 1 year ago
@ichbintharaka I know! Don't you love the crescendo on measure :20? ;-)
codzomz 2 months ago
@codzomz
yeah that's awesome
ichbintharaka 2 months ago
its a version of the PT-6, reverse flow, free turbine. The propeller is not physically connected to the engine but uses jet exhaust. You can turn the prop and the engine doesnt move. Most of the engine power is delivered to the propeller rated in shaft horsepower however a small amount of thrust is achieved from the exhaust stacks. One of the best engines ever created.
apacheaviator1 2 years ago 29
The PT6 is a Canadian engine...
wranglerguy06 2 years ago 2
amen!
adamelnyk 2 years ago
@apacheaviator1 "One of the best engines ever created." ...fitted in one of the best planes ;)
MrLowAltitude 4 months ago
That prop is spinning at 17 whole revs per minute!!!!
FuckinBastard1 2 years ago
sweet!
enikol11 2 years ago
Oh my god I love the sound of the pt6
moss197 2 years ago
yeah the pt-6 sounds lovely!
Dougolicous09 2 years ago
what exactly IS a turbo prop?
jetdog95 2 years ago
Try google or Wikipedia!
XSEVER 2 years ago 2
a propellor aircraft powered by a turbine engine
don11hur 2 years ago
an easy way to explain what a turbo prop is is by saying that it's essentially a jet powered propeller aircraft. it uses a turbine power plant. what that means is that as opposed to the hot gasses produced by a jet engine providing the power necessary to get the aircraft rolling directly; those hot gasses spin other fan blades attached to a drive shaft that spin the propeller.
Dougolicous09 2 years ago
Turboprop engines are a type of aircraft powerplant that use a gas turbine to drive a propeller, while a non-turbo prop uses a standard 4 stroke engine to turn the propellor
HDUpload 2 years ago
It's a turbine that drives a propeller, normal jets are turbofans
Renatodonadio 2 years ago
the propeller is powered by a jet turbine engine, as apposed to being powered by a piston engine.
jaxpower1 2 years ago
It's basically a jet engine, modified to run a propeller instead of using the exhaust gas to push the aircraft
ambientflier 2 years ago
lol you woundent imagine how mny of these comments ive been getting XD thanks though!
jetdog95 2 years ago
i think the sound a 0:37 is the pilot pushing the prop lever to high idle or full because before and on the start up the props were feathered.
Tamilflyer150 2 years ago
that just the sound of the turbine once it is started
BMXStatus302 2 years ago
no, thats just the sound of the turbine right after the jet fuel ignites
BMXStatus302 2 years ago
whats the sound coming up at 0:37 ???
herriho 2 years ago
PT6s have a separate shaft for the gas generator and for the prop, and they start with the prop in feather. The prop barely moves at all until the gas generator comes up to idle RPM, then the prop comes out of feather and picks up speed. So, the noise you're hearing is the prop unfeathering and getting up to idle RPM.
singleproppilot 2 years ago 2
Just loved this. Got my headphones turneed up full. Thanks.
102trafalgar 3 years ago
PT6 I love the smell of jet fuel in the morning~!
wranglerguy06 3 years ago 2
nice!
Andy851 3 years ago