Search the archive:
 YaBB - Yet another Bulletin Board
 
   
 
  Simviation Forum › Real World › Real Aviation › G-force in an airliner
(Moderators: Mitch., Fly2e, ozzy72, beaky, Clipper, JBaymore, Bob70, BigTruck)
‹ Previous Topic | Next Topic ›
Pages: 1 2 
Send Topic Print
G-force in an airliner (Read 842 times)
Apr 9th, 2004 at 11:56am

bm_727   Offline
Colonel
Connecticut, USA!

Gender: male
 Posts: 436
 *****
 
I want to make my airline flights more realistic, and I was wondering two things-

1) Whats the maximum rate of climb/descent a pilot will make in normal cruising flight or during the traffic pattern at an airport?

2) What are the maximum degrees a pilot will bank the wings for a turn? (so the pax don't go falling into the aisles Wink)
 
...&&[glow=green,2,300]I didn't lose my mind- I sold it on Ebay! [/glow]
Back to top 
IP Logged
 
Reply #1 - Apr 9th, 2004 at 12:09pm

Felix/FFDS   Offline
Admin
FINALLY an official Granddad!
Orlando, FL

Gender: male
 Posts: 1000000627
 *****
 
Quote:
I want to make my airline flights more realistic, and I was wondering two things-

2) What are the maximum degrees a pilot will bank the wings for a turn? (so the pax don't go falling into the aisles Wink)


I've been in a 727 banking steeply to circle the Popocatpl volcano in Mexico ..  People were standing in the aisle, with no problem at all.  Remember, when banking, or rolling, it isn't the angle, it's the g-force vectors being applied.

example <Insert request for Hagar's help here> a test pilot noted for rolling the Lancasters once did so with a mechanic standing behind him ...  the mechanic lifted a few inches, but came back to a stand as the plane completed the roll.  I believe that a good pilot has rolled the plane with an open cup of water and not spilled it all about..
 
Felix/FFDS...
Back to top 
IP Logged
 
Reply #2 - Apr 9th, 2004 at 12:19pm

Hagar   Offline
Colonel
My Spitfire Girl
Costa Geriatrica

Posts: 33159
 *****
 
Quote:
example <Insert request for Hagar's help here> a test pilot noted for rolling the Lancasters once did so with a mechanic standing behind him ...  the mechanic lifted a few inches, but came back to a stand as the plane completed the roll.

This was the legendary Alex Henshaw & mentioned in his autobiography "Sigh for a Merlin". http://www.angelfire.com/sd2/spitfirefactory/man.htm

Quote:
I believe that a good pilot has rolled the plane with an open cup of water and not spilled it all about

I've seen Bob Hoover (another legendary pilot) pour a glass of iced tea (I think it was iced tea) while barrel-rolling a Rockwell Shrike Commander without spilling a drop.* This was on a 16mm (8mm? ) company promo film owned by George Miles. I'm not sure if my brother-in-law had it copied on to video tape.

*PS. Quote:
One particular maneuver demonstrated Hoover's superb pilot skills in both the Shrike and the Sabreliner, but it is only visible on film. At altitude, Hoover set a glass on top of the instrument panel and proceeded to pour iced tea into the glass from a pitcher in his right hand while using his left hand to completely roll the aircraft. Combining centrifugal force with smooth handling of the controls, he never spilled a drop of tea.

http://www.nasm.si.edu/research/aero/aircraft/rockwell_commander.htm
 
...

Founder & Sole Member - Grumpy's Over the Hill Club for Veteran Virtual Aviators
Member of the Fox Four Group

Need help? Try Grumpy's Lair

My photo gallery
Back to top 
IP Logged
 
Reply #3 - Apr 11th, 2004 at 1:20am

BFMF   Offline
Colonel
Pacific Northwest

Gender: male
 Posts: 19820
 *****
 
So you could have a 747 in a 60 degree bank and have passengers walking down the isles without any problems ??? Shocked

I find that hard to believe
 
Back to top 
IP Logged
 
Reply #4 - Apr 11th, 2004 at 3:33am

Hagar   Offline
Colonel
My Spitfire Girl
Costa Geriatrica

Posts: 33159
 *****
 
Quote:
So you could have a 747 in a 60 degree bank and have passengers walking down the isles without any problems ??? Shocked

I find that hard to believe

Of course. Providing it was a positive G manoeuvre & the aircraft was in a rated turn - although I wouldn't expect it to be banked at anything like 60 degrees in normal flight. No airliner with passengers on board would normally be banked unless it was in a coordinated turn. If rough weather or negative G conditions are anticipated the seat belt lights would be switched on.
 
...

Founder & Sole Member - Grumpy's Over the Hill Club for Veteran Virtual Aviators
Member of the Fox Four Group

Need help? Try Grumpy's Lair

My photo gallery
Back to top 
IP Logged
 
Reply #5 - Apr 11th, 2004 at 9:33pm

zcottovision   Offline
Colonel
YaBB 1G - SP1 loves me!
N. Ireland / EGAC

Gender: male
 Posts: 598
 *****
 
I thought the biggest bank angle would be about 45 degrees, at the MAX!
 
Back to top 
IP Logged
 
Reply #6 - Apr 12th, 2004 at 9:55am

Jared   Offline
Colonel
I'd rather be flying...
Uniontown, Ohio

Gender: male
 Posts: 12621
 *****
 
yeppers, have seen the video of Bob Hoover completing the manuever...

don't hve it any more unfortunately...
 
Back to top 
IP Logged
 
Reply #7 - Apr 13th, 2004 at 5:08pm

bm_727   Offline
Colonel
Connecticut, USA!

Gender: male
 Posts: 436
 *****
 
Quote:
I wouldn't expect it to be banked at anything like 60 degrees in normal flight.

Well, that's what I'm asking Wink
Normally, under good conditions, what would a full airliner be banked at?
Also, what about rate of climb/descent??  Is there a limit?

P.S.- Is that video online anywhere?


P.S.S.- Quote:
Hoover set a glass on top of the instrument panel and proceeded to pour iced tea into the glass
I hope he used a coaster! Angry

-bm Smiley
 
...&&[glow=green,2,300]I didn't lose my mind- I sold it on Ebay! [/glow]
Back to top 
IP Logged
 
Reply #8 - Apr 14th, 2004 at 4:58am

Hagar   Offline
Colonel
My Spitfire Girl
Costa Geriatrica

Posts: 33159
 *****
 
Quote:
Well, that's what I'm asking Wink
Normally, under good conditions, what would a full airliner be banked at?
Also, what about rate of climb/descent??  Is there a limit?

I don't know much about airliners. From my own experience as a passenger & photos I've seen of the famous checkerboard approach at Kai Tak even 15 degrees would be excessive. The angle of bank looks much steeper than it actually is.

Quote:
P.S.- Is that video online anywhere?

P.S.S.-
I hope he used a coaster! Angry

I haven't looked. It's a company promo film lasting about 20 minutes.

He didn't need a coaster. He never spilled a drop. It's interesting to see the constant flow of liquid running into the glass even when the aircraft is inverted.
 
...

Founder & Sole Member - Grumpy's Over the Hill Club for Veteran Virtual Aviators
Member of the Fox Four Group

Need help? Try Grumpy's Lair

My photo gallery
Back to top 
IP Logged
 
Reply #9 - Apr 14th, 2004 at 10:41am

Jared   Offline
Colonel
I'd rather be flying...
Uniontown, Ohio

Gender: male
 Posts: 12621
 *****
 
It was also pretty cool to see him perform at airshows...Smiley

No one quite like him...Smiley
 
Back to top 
IP Logged
 
Reply #10 - Apr 14th, 2004 at 11:32am

Hagar   Offline
Colonel
My Spitfire Girl
Costa Geriatrica

Posts: 33159
 *****
 
Quote:
It was also pretty cool to see him perform at airshows...Smiley

No one quite like him...Smiley

An exceptional pilot by anyone's standards. Wish I could have been there.

I had a punt round for a clip of his party trick. No luck I'm afraid but I did find a few photos.

The one & only legendary Bob Hoover.

...
...
... ...
 
...

Founder & Sole Member - Grumpy's Over the Hill Club for Veteran Virtual Aviators
Member of the Fox Four Group

Need help? Try Grumpy's Lair

My photo gallery
Back to top 
IP Logged
 
Reply #11 - Apr 14th, 2004 at 4:27pm

bm_727   Offline
Colonel
Connecticut, USA!

Gender: male
 Posts: 436
 *****
 
I would imagine that the Kaitak approach turn would be a tiny bit ( Wink) steeper...
So probably the max would be about 15 degress?

Quote:
I hope he used a coaster! Angry

I was just kiddin' Grin
 
...&&[glow=green,2,300]I didn't lose my mind- I sold it on Ebay! [/glow]
Back to top 
IP Logged
 
Reply #12 - Apr 14th, 2004 at 7:34pm

Hagar   Offline
Colonel
My Spitfire Girl
Costa Geriatrica

Posts: 33159
 *****
 
Quote:
I would imagine that the Kaitak approach turn would be a tiny bit ( Wink) steeper...
So probably the max would be about 15 degress?

Judge for yourself.

...

Maybe someone else can be more specific. I don't claim to know much about these heavy jobs.
 
...

Founder & Sole Member - Grumpy's Over the Hill Club for Veteran Virtual Aviators
Member of the Fox Four Group

Need help? Try Grumpy's Lair

My photo gallery
Back to top 
IP Logged
 
Reply #13 - Apr 15th, 2004 at 1:33pm

Nexus   Offline
Colonel
The greater of two evils...

Gender: male
 Posts: 3282
 *****
 
The max bank angle for the 737 autopilot is 30 degrees, and that's quite an angle. I think you'll have an aural "Bank angle" warning if you exceed 35 degrees. At those banks, you need very much stab trim in order to not "fall out of the sky"
Smiley
 
Back to top 
IP Logged
 
Reply #14 - Apr 15th, 2004 at 3:10pm

bm_727   Offline
Colonel
Connecticut, USA!

Gender: male
 Posts: 436
 *****
 
Quote:
I would imagine that the Kaitak approach turn would be a tiny bit ( Wink) steeper...

What I meant was that the Kaitak turn would probably be a tiny bit steeper than *other* typical approaches... Wink

Thanks for the info Nexus! Grin
Now, what about the vertical speed thing?
 
...&&[glow=green,2,300]I didn't lose my mind- I sold it on Ebay! [/glow]
Back to top 
IP Logged
 
Pages: 1 2 
Send Topic Print
‹ Previous Topic | Next Topic ›
  « Home ‹ Board Top of this page

Simviation Forum » Powered by YaBB 2.5 AE!
YaBB Forum Software © 2000-2010. All Rights Reserved.

Valid RSS Valid XHTML Valid CSS Powered by Perl Source Forge