AWAC Hiring Spring 2010
11-19-2009 | 11:02 AM
#31
Gets Weekends Off
Joined: Jul 2006
Posts: 2,949
Likes: 9
CRJ reverse
I always thought this was kind of weird regarding CRJ thrust reverse:
While riding as a pax, I'd always notice that reverse would never occur until the aircraft was almost as slow as 80 kts or even slower. It just seemed like a long time between main gear touchdown and hearing the engines going into reverse, at which point we're practically stopped. The reverse would last maybe 3 seconds. It almost seemed a waste, since I could feel the aircraft slowing before reverse was even activated. What gives? Just curious because on most jets I've flown, specifically the 75/76, I get reverse thrust going before the nosewheel even touches down. Greatly reduces stopping distance. Can this be done on the CRJ? Thanks for your replies.
73
While riding as a pax, I'd always notice that reverse would never occur until the aircraft was almost as slow as 80 kts or even slower. It just seemed like a long time between main gear touchdown and hearing the engines going into reverse, at which point we're practically stopped. The reverse would last maybe 3 seconds. It almost seemed a waste, since I could feel the aircraft slowing before reverse was even activated. What gives? Just curious because on most jets I've flown, specifically the 75/76, I get reverse thrust going before the nosewheel even touches down. Greatly reduces stopping distance. Can this be done on the CRJ? Thanks for your replies.
73
11-19-2009 | 11:13 AM
#33
Gets Weekends Off
Joined: Jul 2006
Posts: 2,949
Likes: 9
Johnso, do you guys over at NWA (oops I mean DL lol) have that limitation where you can't crack the buckets until the nosewheel is down? That was a biggie on the Mad Dog here at AA b/c you could drag the clamshells on the runway if the nose was too high. Same case on the -9?
73
73
11-19-2009 | 11:21 AM
#34
Moderator
Joined: Oct 2006
Posts: 13,088
Likes: 0
From: B757/767
Johnso, do you guys over at NWA (oops I mean DL lol) have that limitation where you can't crack the buckets until the nosewheel is down? That was a biggie on the Mad Dog here at AA b/c you could drag the clamshells on the runway if the nose was too high. Same case on the -9?
73
73
If the runway is NOT contaminated we can deploy them before the nosewheel touches down, but have to wait for the nosewheel to touch in order to spool them.
If the runway IS contaminated we must wait until the nosewheel is down before we can deploy them.
My guess is it has to do with how the clamshells can hinder the aerodynamic effectiveness of the rudder. I don't know if DAL has the same limitation as AA on their Mad Dogs, as they are much longer then even a DC-9-50.
11-19-2009 | 11:25 AM
#35
Line Holder
Joined: Feb 2008
Posts: 330
Likes: 0
From: Professional Expat
We've been about 10-20 CA's short for about 2 years now.
The new FAA duty regs won't come into effect until after the NPRM process and that will be at least 6-12 months from now, according to the 3 Feds I've taken to PIT from DCA this week.
30 isn't really a lot because we've been beating the cr@p out of the RSV's for at least the last 18 months.
I doubt this anything to do with MESA.
11-19-2009 | 01:18 PM
#36
Gets Weekends Off
Joined: Jul 2007
Posts: 316
Likes: 0
From: Gear Slinger
I don't have the book in front of me, but from memory I believe it's begin stowing them at the 80 knots call, and have them stowed by 60 for AWAC. If that's not exactly it, it's something similar and I usually stow them by 80 anyway.
11-19-2009 | 01:23 PM
#37
Gets Weekends Off
Joined: Dec 2007
Posts: 413
Likes: 0
From: ATL
I always thought this was kind of weird regarding CRJ thrust reverse:
While riding as a pax, I'd always notice that reverse would never occur until the aircraft was almost as slow as 80 kts or even slower. It just seemed like a long time between main gear touchdown and hearing the engines going into reverse, at which point we're practically stopped. The reverse would last maybe 3 seconds. It almost seemed a waste, since I could feel the aircraft slowing before reverse was even activated. What gives? Just curious because on most jets I've flown, specifically the 75/76, I get reverse thrust going before the nosewheel even touches down. Greatly reduces stopping distance. Can this be done on the CRJ? Thanks for your replies.
73
While riding as a pax, I'd always notice that reverse would never occur until the aircraft was almost as slow as 80 kts or even slower. It just seemed like a long time between main gear touchdown and hearing the engines going into reverse, at which point we're practically stopped. The reverse would last maybe 3 seconds. It almost seemed a waste, since I could feel the aircraft slowing before reverse was even activated. What gives? Just curious because on most jets I've flown, specifically the 75/76, I get reverse thrust going before the nosewheel even touches down. Greatly reduces stopping distance. Can this be done on the CRJ? Thanks for your replies.
73
11-19-2009 | 02:47 PM
#39
Line Holder
Joined: Mar 2006
Posts: 1,808
Likes: 27
From: 330 B
On the crj, we still have them available with weight on wheels at touchdown. They just need to be armed prior in order for them to be activated. In flight, they are disarmed or "off" I guess to avoid an uncommanded deployment. However, they are not armed to auto-deploy like spoilers.
11-19-2009 | 02:53 PM
#40
Line Holder
Joined: Mar 2006
Posts: 1,808
Likes: 27
From: 330 B
At Mesaba, its pretty much the same thing...idle reverse by 80kts and stowed by 60. I don't think this is a fod issue as it would be pretty difficult to ingest anything on the ground into an engine thats at least 10 feet off the ground.
Thread
Thread Starter
Forum
Replies
Last Post
