Tuffty From United Kingdom, joined Mar 2001, 92 posts, RR: 0 Reply 1, posted (11 years 7 months 3 weeks 1 day 16 hours ago) and read 1959 times:
the box that i think your refering to at the back of the nose wheel is a stone deflector this is in place to prevent any debris that is thrown up from entering the engine intakes. i think that this was due to the earlyer types from having a large amount of fod damage.
Mr Spaceman From Canada, joined Mar 2001, 2780 posts, RR: 15 Reply 2, posted (11 years 7 months 3 weeks 1 day 16 hours ago) and read 1947 times:
That's a good question...in fact, it's identical to one that I asked around 6 months ago.
If you click on my username, and then on Thread Starters under the Tech/Ops section of my personal profile...you'll find a post listed there at the very bottom that is tittled "DC-9 Nosegear Question". There's 21 replies to this post that are full of excellent info!
Basically, I learned that the object is a water/slush "Spray Deflector" kit, which helps keep any spray off the nosewheels from being induced into the aft engines, which are so close to the body.
FBU 4EVER! From Norway, joined Jan 2001, 998 posts, RR: 7 Reply 6, posted (11 years 7 months 3 weeks 23 hours ago) and read 1826 times:
In addition to deflecting water and slush,the deflector also deflects sand and gravel on snow covered runways here in Scandinavia,something a chined tire won't.
Additionally,there are deflectors on the maingear as well,not a "box"-like thing as on the nosewheel but a "T"-shaped bar mounted on the bottom of the main gear leg.All our DC-9 and MD-80/90 aircraft in SAS are so equipped.
Mr Spaceman From Canada, joined Mar 2001, 2780 posts, RR: 15 Reply 7, posted (11 years 7 months 3 weeks 22 hours ago) and read 1810 times:
I find it pretty interesting that MD-80's would taxi with their flaps extended, to help deflect any spray (I suspect from the main gear tires), from being induced into the engines. I didn't think that they would ever taxi fast enough (especially in rain/slush), to cause a large amount of spray.
By flaps extended...Do you mean FUll flaps (past T/O setting), even when taxiing for departure?
Tuffty From United Kingdom, joined Mar 2001, 92 posts, RR: 0 Reply 8, posted (11 years 7 months 3 weeks 20 hours ago) and read 1801 times:
the tyres also have a lip surrounding, on the side walls, them to throw the water away from the fuselage but the deflector will also play some part in this. alot of aircraft with low slung intakes have these deflectors to prevent damage.
FBU 4EVER! From Norway, joined Jan 2001, 998 posts, RR: 7 Reply 12, posted (11 years 7 months 3 weeks 3 hours ago) and read 1770 times:
Taxiing with flaps down is also performed by SAS.Before taxi,T/O flap setting and after landing the landing flap setting is used until approaching the gate.FOD prevention is not the main reason,by having the flaps down it will facilitate an emergency evacuation should something happen.The flaps make a nice slide.