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Fuselage Mounted Engines And FOD Related Damage  
User currently offlineCplKlinger From United States of America, joined Oct 2010, 152 posts, RR: 0
Posted (3 years 4 months 2 days 16 hours ago) and read 2797 times:

What, if any, is the FOD damage possibility that faces a fuselage mounted engine (e.g. MD-88, Lear 45, CRJ series) in terms of operating on a less than optimal runway surface? I know that on 737 Classics, there were kits available specifically for dealing with this kind of situation, but would something of the same type need to be developed to operate something like an MD-88 on an unimproved surface, baring any other modifications that would have to occur to the airframe? I would think that with the engines being higher on the fuselage, the risks of FOD damage from items like gravel would be much less. The only problem that seems to spring to mind is the placement of the wheels on fuselage-engined aircraft tend to be down in front of the engines and that they could kick up some sort of debris.

4 replies: All unread, jump to last
 
User currently offlineScooter01 From Norway, joined Nov 2006, 1186 posts, RR: 8
Reply 1, posted (3 years 4 months 2 days 13 hours ago) and read 2766 times:
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As far as I can remember, the DC-9 and its "relatives" had a deflector mounted on the nose-gear.

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User currently offlineDalmd88 From United States of America, joined Jul 2000, 2508 posts, RR: 14
Reply 2, posted (3 years 4 months 2 days 13 hours ago) and read 2760 times:

MD80s have always had a FOD issue with ice coming off the wing. There have been a few different solutions. One is to heat a section on the top of the wing with an element that is bonded to the wing. I think it was developed in Sweden. DL installed this system about 10 years ago.

User currently offlineZANL188 From United States of America, joined Oct 2006, 3434 posts, RR: 0
Reply 3, posted (3 years 4 months 2 days 12 hours ago) and read 2752 times:
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Quoting Scooter01 (Reply 1):
As far as I can remember, the DC-9 and its "relatives" had a deflector mounted on the nose-gear.

The 727 had a chine on the nose gear tires to keep water spray out of the engines. Also the strake in your 2nd pic is used to control airflow into the engine....



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User currently offlineswiftski From Australia, joined Dec 2006, 2701 posts, RR: 2
Reply 4, posted (3 years 4 months 2 days 12 hours ago) and read 2741 times:

A lot of operators in Australia use a "Gravel Kit" for the Citation for the same reasons.

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