gotAirbus
Posts: 791
Joined: Fri May 18, 2001 10:02 am

Chirping Sound After Landing And Reverse Thrust.

Wed Sep 18, 2002 7:00 pm

Hi! I hope I can get input from CRJ technicians and/or people who travel in the CRJs; however, if you hear the same sound (read paragraph below) on a different aircraft, feel free to post...

I took an America West Express CRJ-200 jet a while back and was wondering what the chirping sound was. It happened after the reverse thrusters ended and we were about to exit the runway into the taxiway. It sounds like a one time "chirp" as if something was retracted or de-activated...

Oh, and I am in the process of uploading that "chirping" sound if you want to hear what it's like (if I have the time to upload.)

(gotAirbus)-(got commonality?)-(Have A Nice Flight!)
(gotAIRBUS?) - (Got Commonality?) - (Have A Nice Flight!)
 
Night_Flight
Posts: 183
Joined: Wed May 26, 1999 9:00 am

RE: Chirping Sound After Landing And Reverse Thrust.

Fri Sep 20, 2002 8:19 am

The sound may be the sound of the pressure dumping our of the fuselage. When there is weight on the wheels, a switch is activated and the remaining pressurization gets dumped so the pressure is equal to that at ground level. This dumping may be the sound you are hearing.

-Night_Flight-
Remember when sex was safe and flying was dangerous?
 
bio15
Posts: 1048
Joined: Fri Mar 23, 2001 8:10 am

RE: Chirping Sound After Landing And Reverse Thrust.

Fri Sep 20, 2002 9:18 am

I'm not sure if you saw the wing at the time, but flap retraction perhaps?

-Alfredo
 
gotAirbus
Posts: 791
Joined: Fri May 18, 2001 10:02 am

RE: Chirping Sound After Landing And Reverse Thrust.

Sat Sep 21, 2002 4:50 am

Nop Bio15, just a chirp; not a whine+chirp, just like a flap would.

(gotAirbus?)-(Got Commonality?)-(Have A Nice Flight!)
(gotAIRBUS?) - (Got Commonality?) - (Have A Nice Flight!)
 
fr8tdog
Posts: 120
Joined: Wed Feb 16, 2000 4:25 pm

RE: Chirping Sound After Landing And Reverse Thrust.

Tue Sep 24, 2002 12:06 pm

its possible that it could be the translational cowls restowing...
most of us allow the engines to spool down a bit prior to stowing to prevent a big push from the engines......we have to be below 30% N1 when below 60kts
to prevent FOD ingestion....
fr8t... CL65/44 Capt.

Who is online

Users browsing this forum: No registered users and 1 guest

Popular Searches On Airliners.net

Top Photos of Last:   24 Hours  •  48 Hours  •  7 Days  •  30 Days  •  180 Days  •  365 Days  •  All Time

Military Aircraft Every type from fighters to helicopters from air forces around the globe

Classic Airliners Props and jets from the good old days

Flight Decks Views from inside the cockpit

Aircraft Cabins Passenger cabin shots showing seat arrangements as well as cargo aircraft interior

Cargo Aircraft Pictures of great freighter aircraft

Government Aircraft Aircraft flying government officials

Helicopters Our large helicopter section. Both military and civil versions

Blimps / Airships Everything from the Goodyear blimp to the Zeppelin

Night Photos Beautiful shots taken while the sun is below the horizon

Accidents Accident, incident and crash related photos

Air to Air Photos taken by airborne photographers of airborne aircraft

Special Paint Schemes Aircraft painted in beautiful and original liveries

Airport Overviews Airport overviews from the air or ground

Tails and Winglets Tail and Winglet closeups with beautiful airline logos