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Interior of a Boeing/Stearman PT-17 showing small channel section stringers. In engineering, a longeron or stringer is a load-bearing component of a framework. The term is commonly used in connection with aircraft fuselages and automobile chassis. Longerons are used in conjunction with stringers to form structural frameworks. [1]
The spar carries flight loads and the weight of the wings while on the ground. Other structural and forming members such as ribs may be attached to the spar or spars, with stressed skin construction also sharing the loads where it is used. There may be more than one spar in a wing or none at all.
Form-ribs, plate-type ribs, truss ribs, closed-ribs, forged ribs and milled ribs, where form-ribs are used for light to medium loading and milled ribs offer the greatest strength. Form-ribs are made from a sheet of metal bent into shape, such as a U-profile. This profile is placed on the skin, just like a stringer, but then in the other direction.
While internal wing structure commonly provides much of the strength via a combination of spars, ribs and stringers, the external skin typically carries a proportion of the loads too. On many aircraft, the inner volume of the wingbox has also been used to store fuel, which is commonly referred to as being a wet wing design. [1]
The price had risen to $3,000 before eBay closed the auction. [8] [9] In May 2006, the remains of U.S. Fort Montgomery, a stone fortification in upstate New York built in 1844, were put up for auction on eBay. The first auction ended on June 5, 2006, with a winning bid of US$5,000,310.
The Easy Riser is constructed with an aluminium structure and stamped ribs, covered in doped aircraft fabric covering, Mylar or other coverings. The pilot sits on a fabric sling seat. Engines used include the 11 hp (8 kW) McCulloch MAC-101, 15 hp (11 kW) Hirth F-36 and Solo 210. [1]
Fuselage of a Boeing 737 shown in brown. The fuselage (/ ˈ f juː z əl ɑː ʒ /; from the French fuselé "spindle-shaped") is an aircraft's main body section. It holds crew, passengers, or cargo.
Semi-monocoque aircraft fuselages differ from true monocoque construction through being reinforced with longitudinal stringers. [1] [2] The Mooney range of four seat aircraft, for instance, use a steel tube truss frame around the passenger compartment with monocoque behind.