Help Identify this Helicopter

[Mulch]

I am relatively new to the helicopter industry and I am having trouble identifying the first helicopters you see in the video link below. Can someone please point me in the right direction so I can read more about these particular ships? Thanks!

 

http://www.youtube.com/watch?v=47Pv-n_vCxM

[bossman]

I am relatively new to the helicopter industry and I am having trouble identifying the first helicopters you see in the video link below. Can someone please point me in the right direction so I can read more about these particular ships? Thanks!

 

http://www.youtube.com/watch?v=47Pv-n_vCxM

Alouettes and a Gazelle.

[Mulch]

Thanks.

[Mulch]

dup. post

Edited April 9, 2008 by Mulch

[TomPPL]

What a brilliant vid..! One of the best i've seen. The Alouettes are pretty good, heres an interesting fact about the Alouette 318c

 

ENGINE SHUT DOWN PROCEDURE - taken from the manual

 

1. Apply Collective friction

2. Pull appropriate circuit breakers

3.Retard throttle control full

4.Stop engine

5. Fuel pump, Generator, Battery OFF

6.Below 175rpm pull rotor break

 

The shutdown only takes approximately 30 seconds then you can exit the ship. Most other turbines take from over a minute to sometimes 5 minutes to shutdown.

[bossman]

What a brilliant vid..! One of the best i've seen. The Alouettes are pretty good, heres an interesting fact about the Alouette 318c

 

ENGINE SHUT DOWN PROCEDURE - taken from the manual

 

1. Apply Collective friction

2. Pull appropriate circuit breakers

3.Retard throttle control full

4.Stop engine

5. Fuel pump, Generator, Battery OFF

6.Below 175rpm pull rotor break

 

The shutdown only takes approximately 30 seconds then you can exit the ship. Most other turbines take from over a minute to sometimes 5 minutes to shutdown.

You know, we always cooled the turbines, no matter what the manual said. I can't help but believe that the cool down helped prolong the life of the burner can and nozzles. The start procedure is a one switch and sit back non event.

[500E]

How goes the problem Bossman. still grinding away slowly I suppose

The Hillier been delivered yet?

[Wally]

You know, we always cooled the turbines, no matter what the manual said. I can't help but believe that the cool down helped prolong the life of the burner can and nozzles. The start procedure is a one switch and sit back non event.

 

That "seems" sensible, except that some engines have other, particular issues to consider. The AStar Arriel, for instance, had a rep for coking up one them there bearing do-lollies at extended ground idle. There was an unofficial "officially" approved procedure to run them up to full chat every 5 minutes to cool and flush whichever bearing it was (PFM to me, I'm a pilot). Yeah, I know, you're not talking about 5 minute cool downs...

I've seen "charts & graphs" for the Allisons/RR 250 series that seem to show ground idle beyond the recommended cool-down (2 minutes at gorund idle) actually creates heat issues, hot spots, etc., because the engine's optimized for cooling at more flow. Further, I've been told that the 350B3 approved procedural checklist goes from flight idle (Full flight NR) to cut-off with no ground idle. It's not intuitive, so, Me, I'm gonna do whatever the book says.

[bossman]

How goes the problem Bossman. still grinding away slowly I suppose

The Hillier been delivered yet?

Hey 500E,

Still plugging away on the Alouette issue. The FAA offered a settlement, but not enough. The lawyer keeps saying we have won the case, but I have yet to see anything. I've got two pilots sitting at the Van Nevel factory waiting on the completion. Looks like sometime next week. We signed a deal to be the training center, service center, and sales center for the new and refurbed 1100's. My pilots tell me that the new improved nose is a 100% improvment. Of course our first machine has the old nose. Sorry if I hi-jacked this thread, didn't mean too.

bossman

[bossman]

That "seems" sensible, except that some engines have other, particular issues to consider. The AStar Arriel, for instance, had a rep for coking up one them there bearing do-lollies at extended ground idle. There was an unofficial "officially" approved procedure to run them up to full chat every 5 minutes to cool and flush whichever bearing it was (PFM to me, I'm a pilot). Yeah, I know, you're not talking about 5 minute cool downs...

I've seen "charts & graphs" for the Allisons/RR 250 series that seem to show ground idle beyond the recommended cool-down (2 minutes at gorund idle) actually creates heat issues, hot spots, etc., because the engine's optimized for cooling at more flow. Further, I've been told that the 350B3 approved procedural checklist goes from flight idle (Full flight NR) to cut-off with no ground idle. It's not intuitive, so, Me, I'm gonna do whatever the book says.

You are correct about every engine has it's own quirks. The T53 in the Huey's likes to cool a little higher than idle. I just like the thought of stabilizing temps before shutting down. Especially if you've just pulled hard getting into a tight spot.