The results prove that, under the condition of high altitude and low pressure, if jet excitation is applied on the surface of the hypersonic airfoil, a local high pressure area will be formed in front of the excitation port, and the differential pressure between upper and lower wings will be changed. After that, typical excitation states of numerical simulation are selected for hypersonic wind tunnel experiment verification, whose results are in good agreement with those of the numerical simulation. First, the influence of different jet excitation parameters on the scheme is explored through numerical simulation, mainly including the Mach number, the jet location, the jet angle, and the change with the angle of attack. In this paper, a two-dimensional hypersonic airfoil is selected to analyze the feasibility and control effect of jet flow control technology under hypersonic inflow, and a flow control scheme is designed to make the jet eject from the wing surface. In the field of low speed, subsonic speed, and supersonic speed, many experiments and numerical simulations have been carried out to verify the excellent auxiliary or control effects of active flow control technology on aircraft. Active flow control technology can improve the aerodynamic performance of the aircraft while optimizing its control attitude. Raising the aircraft lift-to-drag ratio, improving the efficiency of attitude control, and optimizing aerodynamic performance are important goals. Dihedral increases stability and decreases aerobatic ability.Hypersonic aircraft represent an important area of aerospace development. Dihedralĭihedral is the upward angle of the wings from the fuselage. The plane will perform better and be easier to control. Generally, a light wing loading is best for beginners. Wing loading is the weight that a given area of the wing has to lift and is usually measured in ounces per square foot. Wing area is the amount of wing surface available to create lift. Lastly, a Semi-Symmetrical Airfoil is a combination of the other two and favored by intermediate and sport pilots. A Symmetrical Airfoil's top and bottom have the same shape, allowing it to produce lift equally whether right side up or upside down and to transition between the two smoothly (this is recommended for advanced pilots). ![]() This is ideal for trainers and first-time pilots. The Flat-Bottom Airfoil will develop the most lift at low speeds and helps return the model to upright when tilted. If you face the wing tip of the plane and cut it from front to back, the cross section exposed would be the wing's airfoil. With its weight above the wing, it tends to be less stable- excellent for advanced fliers who want to perform rolls, loops and other aerobatic maneuvers.Į-Flite Apprentice STS 1.5m has a high wing design for stable flight. As a result, high-wing models tend to be more stable, easier to fly-and natural choices for trainers. When the model tilts, the model's weight tries to return it to a level position. In a high wing design, the weight of the model is suspended below the wing. Wing placement, for the most part, falls into two major categories - high wing design and low wing design. If lift and thrust are greater than gravity and drag, you have the potential for flight…and fun! Wing Location ![]() However, thrust has its own opposition to overcome in the form of drag-the resistance of the air to a body moving through it. ![]() Since it can't do that standing still, airplanes use thrust (force directed backwards) to drive the wing forward through the air and generate lift. To fly, an airplane's wing has to overcome gravity by developing lift greater than the weight of the plane. Each individual aircraft will require specific accessories to build and fly the model properly. After reviewing the basics below, you should have a good idea of the design characteristics you will want in your first plane. Knowing design characteristics that affect how an airplane will fly can help you feel confident when selecting your first RC plane.
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