CRJ200 Questions - Page 2

ctab5060X · October 28th, 2009, 11:17

In regards to the 1/2 bank switchover at 31,600...

stratoduck pretty much hit the nail on the head. Nothing to do with about 10,000 meters or some pretty number, but performance of the airplane and wing.

31,600 was determined to be the "critical" altitude where the wings could potentially start having issues if 1/2 bank was not used.

Additionally, (according to my source) 1/2 bank does not compensate and will turn wide on RNAV procedures.

cencal83406 · October 28th, 2009, 14:23

31 600 feet = 9 631.68 meters

kellwolf · October 28th, 2009, 15:17

Quote:

Originally Posted by ctab5060X

Additionally, (according to my source) 1/2 bank does not compensate and will turn wide on RNAV procedures.

What's the source? I honestly don't know, but reading the rather lacking systems manual we have, it sounds like it will anticipate the turn knowing it's 1/2 bank.

ctab5060X · October 28th, 2009, 15:22

Quote:

Originally Posted by kellwolf

What's the source? I honestly don't know, but reading the rather lacking systems manual we have, it sounds like it will anticipate the turn knowing it's 1/2 bank.

Went to CKB last night... that should give you the source.

I wonder about it as well... I think it can handle small course changes... it would have too for anything about 31,600, but maybe the sharper turns that some RNAV departures initially have give it problems.

Next time you fly, try the 1/2 bank when interecepting an airway... eager to hear what it will actually do.

stratoduck · October 28th, 2009, 15:30

Still there is the question of why 31,600. Is 31,700 just pushing it a little too far?

Looks like a mathematically derived number. I'd really enjoy the history.

PGT · October 28th, 2009, 15:32

Quote:

Originally Posted by stratoduck

Looks like a mathematically derived number. I'd really enjoy the history.

That's what I was hoping for as well, but as ctab5060x mentioned it has something to do with the wing.

kellwolf · October 28th, 2009, 21:25

Quote:

Originally Posted by ctab5060X

Went to CKB last night... that should give you the source.

I can guess. And if it's the same guy, he took off from CKB the other night missing some galley pieces. MX had to scramble to find them on a plane in the hangar so we could leave....

That being said, he's probably right.

I'll check it next time I fly.

C150J · October 29th, 2009, 18:12

1/2 bank does compensate for RNAV tracks in our RJs. It will lead turns.

granlistillo · October 30th, 2009, 21:28

Quote:

Originally Posted by C150J

1/2 bank does compensate for RNAV tracks in our RJs. It will lead turns.

That sounds ok with a flyby waypoint, but if it is a flyover waypoint you might go a little wide. They really want you on the line, i´m guessing it will hold you in RNP requiremnt, but common sense says if it is for passenger comfort, when you are in the portion of an RNAV with a lot of acute turns, common sense says don´t do it half bank. That was my original point.

ctab5060X · October 30th, 2009, 22:14

Quote:

Originally Posted by granlistillo

That sounds ok with a flyby waypoint, but if it is a flyover waypoint you might go a little wide.

That is what I am thinking as well...

Soul Brotha' · November 1st, 2009, 21:23

At OH we use 1/2 bank when we are below Vref. 31,600 comes directly from Bombardier as that was what the test pliots/engineers thought where control could become an issue if one was hand flying. I had a 32 hour layover in YUL last year and did a tour of the Bombardier factory. I had a bunch of questions about the CRJ-100/200. Anyone want to guess why the windows suck on the CRJ 200? Or why the CRJ 700/900 is slanted nose down? Why aren't there any leading edge devices on the CRJ 100/200?

BobDDuck · November 1st, 2009, 21:27

The 700/900 is slanted down because if the MCD was any higher it would require a slide.

As to the other 2 questions I have no idea unless it's simply because it stems from the Challenger design.

Polar742 · November 1st, 2009, 21:37

Never flew the plane, but I've heard the lore. Let's see how stuff floating around, we'll call it the "collective conscious" stacks up:

Quote:

Originally Posted by Soul Brotha'

Anyone want to guess why the windows suck on the CRJ 200?

I'd say the windows don't suck, it's the CRJ. The rumor is the Challenger floor got raised to fit 4 across.

Quote:

Why aren't there any leading edge devices on the CRJ 100/200?

Since they stretched a Challenger, it's probably the same wing.

My turn:

Who designed the Challenger and what was it's initial name?

Who was it designed for?

zmiller4 · November 1st, 2009, 21:52

Quote:

Originally Posted by Polar742

Who designed the Challenger and what was it's initial name?

Who was it designed for?

Bill Lear, Learstar 600. Designed for? No idea.

NC_BE300 · November 2nd, 2009, 00:06

Quote:

Originally Posted by Soul Brotha'

At OH we use 1/2 bank when we are below Vref. 31,600 comes directly from Bombardier as that was what the test pliots/engineers thought where control could become an issue if one was hand flying. I had a 32 hour layover in YUL last year and did a tour of the Bombardier factory. I had a bunch of questions about the CRJ-100/200. Anyone want to guess why the windows suck on the CRJ 200? Or why the CRJ 700/900 is slanted nose down? Why aren't there any leading edge devices on the CRJ 100/200?

How did you get the info to do a tour?
I'd be interested in checking that out sometime, but i have yet to have a long enough layover there in a long time.

Then again....i'm sure in winter i will be paged to be there alot. But it would be nice to have something else to look forward to.

flyasaab · November 2nd, 2009, 00:29

I know 1/2 bank will turn off when a Loc is captured also.

A-300F4-622R · November 2nd, 2009, 01:28

Quote:

Originally Posted by PGT

Why does the switchover to mach/ 1/2 bank occur at 31,600 feet?

On the trips that I typically fly, Fifi rarely gets that high!

A-300F4-622R · November 2nd, 2009, 01:31

Quote:

Originally Posted by zmiller4

Bill Lear, Learstar 600. Designed for? No idea.

FredEx

Polar742 · November 2nd, 2009, 05:41

Quote:

Originally Posted by zmiller4

Bill Lear, Learstar 600. Designed for? No idea.

Quote:

Originally Posted by A-300F4-622R

FredEx

YES.....(as far as I know.)

Some of the old 600s still have the door that swings up, with the ladderstairs like on the old SAABs....saw one some years ago at FLL.

Soul Brotha' · November 2nd, 2009, 13:40

Quote:

Originally Posted by Polar742

Never flew the plane, but I've heard the lore. Let's see how stuff floating around, we'll call it the "collective conscious" stacks up:

I'd say the windows don't suck, it's the CRJ. The rumor is the Challenger floor got raised to fit 4 across.

Since they stretched a Challenger, it's probably the same wing.

My turn:

Who designed the Challenger and what was it's initial name?

Who was it designed for?

To smart for your own good my friend.

NJA_Capt · November 3rd, 2009, 10:58

Quote:

Originally Posted by Polar742

Some of the old 600s still have the door that swings up, with the ladderstairs like on the old SAABs....

Ya mean like this

. Not many people know about these rare birds.

PGT · November 3rd, 2009, 17:07

Quote:

Originally Posted by A-300F4-622R

On the trips that I typically fly, Fifi rarely gets that high!

I wish my plane could go that high!

Polar742 · November 3rd, 2009, 17:10

Quote:

Originally Posted by NJA_Capt

Ya mean like this

. Not many people know about these rare birds.

Good find!!!

A-300F4-622R · November 3rd, 2009, 18:27

Quote:

Originally Posted by NJA_Capt

Ya mean like this

. Not many people know about these rare birds.

They are rare for a good reason. There is a reason the BAC 146 has FOUR of those engines!

Polar742 · November 3rd, 2009, 18:31

Quote:

Originally Posted by A-300F4-622R

They are rare for a good reason. There is a reason the BAC 146 has FOUR of those engines!

Wasn't that the Lycoming motor?

Isn't that a common APU now?

October 28th, 2009, 11:17	#26
ctab5060X Old Skool Join Date: May 2007 Location: Horn Lake, MS Posts: 2,481 Blog Entries: 2	Re: CRJ200 Questions In regards to the 1/2 bank switchover at 31,600... stratoduck pretty much hit the nail on the head. Nothing to do with about 10,000 meters or some pretty number, but performance of the airplane and wing. 31,600 was determined to be the "critical" altitude where the wings could potentially start having issues if 1/2 bank was not used. Additionally, (according to my source) 1/2 bank does not compensate and will turn wide on RNAV procedures. __________________ VP, Aircraft Procurement

October 28th, 2009, 14:23	#27
cencal83406 Old Skool Join Date: Sep 2007 Location: Atlanta, GA Posts: 1,757	Re: CRJ200 Questions 31 600 feet = 9 631.68 meters __________________

October 28th, 2009, 15:30	#30
stratoduck Newbie Join Date: Feb 2009 Location: Brooklyn Posts: 15	Re: CRJ200 Questions Still there is the question of why 31,600. Is 31,700 just pushing it a little too far? Looks like a mathematically derived number. I'd really enjoy the history.

October 29th, 2009, 18:12	#33
C150J Senior Member Join Date: Feb 2004 Posts: 1,324	Re: CRJ200 Questions 1/2 bank does compensate for RNAV tracks in our RJs. It will lead turns.

November 1st, 2009, 21:23	#36
Soul Brotha' Senior Member Join Date: Aug 2006 Location: Reserve with no hope. Posts: 573	Re: CRJ200 Questions At OH we use 1/2 bank when we are below Vref. 31,600 comes directly from Bombardier as that was what the test pliots/engineers thought where control could become an issue if one was hand flying. I had a 32 hour layover in YUL last year and did a tour of the Bombardier factory. I had a bunch of questions about the CRJ-100/200. Anyone want to guess why the windows suck on the CRJ 200? Or why the CRJ 700/900 is slanted nose down? Why aren't there any leading edge devices on the CRJ 100/200?

November 1st, 2009, 21:27	#37
BobDDuck Old Skool Join Date: Sep 2003 Location: Left Seat Posts: 7,047	Re: CRJ200 Questions The 700/900 is slanted down because if the MCD was any higher it would require a slide. As to the other 2 questions I have no idea unless it's simply because it stems from the Challenger design. __________________ The Gear Monkey The Gear Monkey Store

November 2nd, 2009, 00:29	#41
flyasaab Newbie Join Date: Oct 2006 Location: Kansas City Posts: 21	Re: CRJ200 Questions I know 1/2 bank will turn off when a Loc is captured also.

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