Engine Start-Up Bell 206 JetRanger from outside

[shairaptor]

can you call a helicpter sexy? yes I'm sure you can! Jetranger, you're a sexy beast! ( = well designed :)

[22640cal]

@shairaptor helicopters are sexy by default.... except Russian ones lol :)

[shairaptor]

@22640cal haha :)

[64jorthom]

For me, the engine sound of gas turbine engines, are like music. I think I am a fan of that music, it is better than rock or heavy metal. When getting close to an airport, always try to listen this music, it is fantastic!!! Sorry for rock bands fans!!!

[nandiito]

Could anyone who really knows explain to me how the propellers move?

All I wonder is if it has a kind of transmission, well not transmission because it's direct with no shifting, but what connects the engine to the propeller. I guess it's more like a clutch or a belt as in CVT transmissions. What allows the engine to run and slowly connect to the propeller?

[youtuubesucks]

@nandiito

You are right. The Bell 206 Jet Ranger, like most other turbine helicopters, has no clutch but a Transmission (XMSN) with a planetary gear inside. The output is connected to the rotor mast which drives the main rotor. The input of the XMSN is connected to the power turbine (N2) of the Allison 250C20 via the Main Drive Shaft. (The N1 turbine is the compressor). The transmission has a speed ratio of approx. 18:1.

[youtuubesucks]

@nandiito

That means that approx. 6500 rpm N2 "go inside" the XMSN and i think 364 rpm "come out" to the main rotor. As the power turbine (N2) spools up after ignition the rotor starts turning slowly. Due to the speed ratio of the transmission it seems that there is some kind of clutch involved but there isn't! However, there are some helicopters (piston and turbine) which have a clutch, e.g. R22, R44, Hughes 300, SA3?? Lama etc. I hope it's now clear to you?!

[nandiito]

@youtuubesucks Some big names are confusing but I get the main concept. Thanks, I appreciate it!

[Tjita1]

@youtuubesucks To make it even clearer, let's clarify that the turbine driving the compressor inside the engine isn't in any way connected to the power turbine, powering the transmission which powers the rotors. In other words, you could in theory (in reality too, but it wouldn't end up very well) keep the rotors and thus the power turbine still while the engine core is running. Inside the transmission, however, there is no clutch or similar.

[bigman3255]

@youtuubesucks there is no clutch in the helicopter....what engages the turbine engine to the transmission is a freewheeling unit....this allows the engine to drive the trani but not the trani to drive the engine....this is critical because if your engine quits then your rotor would seize and u wouldnt be able to autorotate

[firealarmtech]

@nandiito it has a gearbox

[annmall100]

@nandiito The engine is directly connected to the Main Rotor Gearbox which is also connected to the Tail Rotor system. When the Engine is burning and turning, so are the rotors. The engine winds up slowly (as you can hear), as it accelerates the Rotors turn faster until it is up to Flight Idle. In the event of a power failure the Rotors can be disengaged from the powerplant via what's known as a Free Wheel Unit.

[nandiito]

@annmall100 @youtuubesucks Thanks for the information :)

[Skyscraper179]

Hi, could it be possible that this is D HHMP ? Can´t read the registration...

[youtuubesucks]

@Skyscraper179

You're 100% correct.

How come you know the "MP"?

[Skyscraper179]

@youtuubesucks

Ich habe die MP mal gechartert, so dass die schon neben meinem Haus gestanden hat. habe seither ein Bild der MP auf meinem Desktop. Als ich das Video sah kam die mir gleich bekannt vor.... Grüße Markus

[mifan93]

thats a fancy landing pad too!!!!

all brick, expensive!!!

[twopinstogether]

I LOVE IT TOO....NICE JOB...

[ramano11]

As groundcrew, I love the sound and smell of turbine exhaust in the morning!

[annmall100]

@ramano11 Smells like........... Victory :)

[IWMYB]

@annmall100 it's kerosine not gasoline :-)

[annmall100]

@IWMYB

When did I say it was gasoline???

After 7 years on this type I ought to know better :)

[zcg3]

@ramano11 You're weird! I like the smell of Napalm in the morning...

[ilovegoatsecks]

@zcg3 i like the smell of goats in the morning

[Zoloft61]

tick tick tick tick tick woeiiiiiiiiiiiiiiiiiiii booooooo

I like it!

[moss197]

lol love the sound effects

[leabo66]

awsome I would love to have this as a ring tone

[UHOH74]

I need to get this sound as a ringtone!

There is no better sound in the world.

[youtuubesucks]

yeah, i know. if u send me your email, i could send u the ringtone.

[casinosquare1]

hi youtuubesucks,

could you send me the ringtone too please, I love it! by way of exchange, i could send you some interesting aircraft related photos and video files and if youre into chill type music, Ive got the best stash in the world,,, air10 gmx  coom

[yamahonkawazuki]

@youtuubesucks can you still do this? i know its 2 years later, but i want it as well ty ahead of time

[youtuubesucks]

@yamahonkawazuki

?? what do you mean??

[yamahonkawazuki]

@youtuubesucks had offered to send it to a youtuber here a couple years back. as a ringtone or whatever it was. was wondering if you still could do this. or if you knew where i could find it

[youtuubesucks]

@yamahonkawazuki

ahh of course. just send me your email via private message and i'll send you some sound files!

[yamahonkawazuki]

@youtuubesucks pm sent. many thanks

[mainephotonut]

Beautiful, just beautiful. Love them turbines and the smell of jet fuel.