Moderators: richierich, ua900, PanAm_DC10, hOMSaR

 
convair880mfan
Topic Author
Posts: 226
Joined: Fri Jun 25, 2021 12:33 am

Are there any airliners that descend from cruising altitude in a flat or slightly nose up pitch?

Tue Sep 21, 2021 8:23 pm

Watching airliners come in for landings, I notice that many have a nose high attitude during the final approach. What about during the initial descent?
 
User avatar
BWIAirport
Posts: 1089
Joined: Thu Jun 23, 2016 10:29 pm

Re: Are there any airliners that descend from cruising altitude in a flat or slightly nose up pitch?

Tue Sep 21, 2021 8:36 pm

Probably not, although I could be wrong. By the end of cruise, if the calculations have been done properly, the aircraft should be within a degree or two of flying perfectly level. Unless the descent is unusually gradual, initial descent will be nose-down. You'll probably start to see a nose-high attitude in some circumstances as the aircraft approaches airspeed restrictions.
 
johns624
Posts: 4071
Joined: Mon Jul 07, 2008 11:09 pm

Re: Are there any airliners that descend from cruising altitude in a flat or slightly nose up pitch?

Tue Sep 21, 2021 9:03 pm

convair880mfan wrote:
Watching airliners come in for landings, I notice that many have a nose high attitude during the final approach. What about during the initial descent?
In one of your other posts, you listed all the planes that you have been in. Have you ever noticed a nose high descent?
 
Woodreau
Posts: 2154
Joined: Mon Sep 24, 2001 6:44 am

Re: Are there any airliners that descend from cruising altitude in a flat or slightly nose up pitch?

Tue Sep 21, 2021 11:01 pm

AF447 was descending at over 15,000ft/min in a level attitude.
 
User avatar
Starlionblue
Posts: 20806
Joined: Fri Feb 27, 2004 9:54 pm

Re: Are there any airliners that descend from cruising altitude in a flat or slightly nose up pitch?

Wed Sep 22, 2021 12:23 am

convair880mfan wrote:
Watching airliners come in for landings, I notice that many have a nose high attitude during the final approach. What about during the initial descent?


As BWIAirport says, the pitch angle during the descent is within a few degrees of level. Looking at the unreliable airspeed reference for the A330, the reference pitch angle for descent is 2 degrees,

The nose-high attitude on final is is largely due to the aerodynamic effects of leading-edge devices. Aircraft without leading-edge devices, e.g. CRJs and B-52s, tend to have a much lower pitch angle on final.
 
GalaxyFlyer
Posts: 8362
Joined: Fri Jan 01, 2016 4:44 am

Re: Are there any airliners that descend from cruising altitude in a flat or slightly nose up pitch?

Wed Sep 22, 2021 12:43 am

Woodreau wrote:
AF447 was descending at over 15,000ft/min in a level attitude.


I was gonna say that—some planes have descended in flat or nose-high attitude just not too successfully. The T-38 syllabus has a full aft stick stall demonstration. I can’t remember, but I think it gradually entered clean and you could the stick at the aft stop, wing rocking and nose near level—descent rate was pretty high. Point being don’t let this happen. Sort of like the vertical confidence maneuver where you ran it out is speed and flopped over.
 
User avatar
BWIAirport
Posts: 1089
Joined: Thu Jun 23, 2016 10:29 pm

Re: Are there any airliners that descend from cruising altitude in a flat or slightly nose up pitch?

Wed Sep 22, 2021 2:47 pm

Woodreau wrote:
AF447 was descending at over 15,000ft/min in a level attitude.

I feel comfortable stating that's not standard operating procedure

Who is online

Users browsing this forum: Caryjack and 11 guests

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