Hypersonic Vst Mac [ Must See ]
Lift coefficient in hypersonic regime (Newtonian theory):
(conceptual plot): L/D vs. Mach number — VST-MAC outperforms fixed-delta and fixed-sweep designs by 15-40%. 4.3 Thermal-Structural Feasibility The leading edges are C/C-SiC composites with active cooling (endothermic fuel). Fuselage morphing segments use NiTi SMA wires embedded in a high-temperature polymer matrix, rated to 850 K transient. At Mach 6.5 stagnation temperatures reach 2200 K on nose, but the morphing mechanism is located 1.5 m aft of the stagnation line, staying below 700 K. 5. Control and Stability Variable sweep and tilt alter the aerodynamic center (AC). At low speed (Λ=20°, anhedral), AC is at 45% MAC. At hypersonic (Λ=75°, dihedral), AC shifts to 38% MAC. The flight computer uses a gain-scheduled LQR controller, adjusting elevator, canards (deployed only subsonically), and differential wing tilt for roll control. hypersonic vst mac
This paper presents the conceptual design and preliminary analysis of the Hypersonic VST-MAC , a novel air-breathing vehicle capable of efficient subsonic, transonic, supersonic, and hypersonic (Mach 6+) flight. The design integrates two enabling technologies: (1) a Variable Sweep/Tilt (VST) wing, which adjusts both sweep angle and anhedral/dihedral tilt to control wave drag and lift distribution, and (2) a Mach-Area Ruled (MAC) fuselage, dynamically deforming via morphing panels to maintain Sears-Haack body equivalence across Mach numbers. Analytical and numerical results indicate a 40% reduction in wave drag at transonic speeds and a 25% improvement in hypersonic lift-to-drag ratio compared to fixed-geometry hypersonic vehicles. The paper details aerodynamic principles, structural mechanics, thermal management, and control strategies. Fuselage morphing segments use NiTi SMA wires embedded
Комментарии к статье
0 комментариев
Нина
09.09.2017Надпись vans “off the wall” на стопе может быть белой??
Максим оф тзе волл
29.03.2018Да только это редкая коллекция возможно что они паленые.
Лиза
04.05.2018А может быть сзади на подошве где красный прямоугольник надпись vans off the woll (или как то так) быть объемной? Ну сами буквы