The MiG-21 fuselage is a semi-monocoque structure constructed primarily from duralumin (an aluminum alloy) to achieve a lightweight yet strong, pencil-shaped frame.
It is built by attaching metal skins to internal formers and longitudinal stringers, with a maximum width of 1.24 meters to reduce drag.
Wikipedia +3Key Manufacturing & Design Elements:Structure: The airframe uses a semi-monocoque design, where the skin shares in the structural load, combined with a frame/stringer skeleton.Components:
It features a circular, nose-mounted air intake with an automatic, three-position moving intake cone to regulate air flow at different speeds.Assembly:
The fuselage includes specialized sections for the engine, cockpit, and airbrakes, with high-strength fasteners and rivets connecting the metal sheets.Sections:
The structure is highly integrated with the delta wings and includes a ventral fin and a brake parachute housing near the tail.
The F-35 Lightning II structure is a advanced, high-performance, hybrid airframe designed for stealth, combining carbon-epoxy composites, titanium, and aluminum.
It primarily utilizes semi-monocoque construction with specialized, corrosion-resistant materials to support a low-observable (LO) surface.
所以 比较F35 和 Mig21 在结构上，现代机 没有质的飞跃。。主要是材料和工艺上的 提升。。
整体复合材料 似乎 还不到时候哈~~😆😆😆😆🙏🙏
