From: Jean-Francois Mezei <MEZEI_JF@Eisner.DECUS.Org> Organization: Digital Equipment Computer Users Society Date: 05 May 95 03:27:11 Followups: 1 2 3 4 5 6
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On a publication I receive was a picture of an MD aircraft wearing KLM colours just about to land. I do not know what model of MD aircraft it is, but it has the following characteristics: 2 engines on wings 1 engine in tail winglets (up only) Most aircraft I have seen have 3 landing gears, one at the nose and 2 under the wings near fuselage. However, on that KLM MD plane, there was a 4th landing gear with 2 wheels only, located under the fuselage and just between the 2 gears that are under the wings. QUESTIONS: Is the 4th gear a feature that only MD now uses (as is the tail mounted 3rd engine) or will that feature also be used by other major manufacturers ? Is the purpose of that gear to provide additional breaking power or as a structural feature to support the weight of aircraft during touchdown ? If the 4th gear was required to support the weight of aircraft, was this required because they used less structural metal in the fuselage, or because of a weird and new design or because they wanted the plane to be able to carry more weight (cargo/passengers/luggage) ???