Tag Archives: drag

NASA will test folding wings to reduce the drag

Nasa is investigating whether folding the wing in flight could save more fuel. This study is called Spanwise Adaptive Wing (SAW), and it it will be soon tested on the ground with the  goal is to show that by folding … Continue reading

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Preliminary sizing – Matching Chart

  Introduction This article introduces the first step in the preliminary sizing process, which is to determine the so-called aircraft design point in terms of wing loading and thrust-to-weight ratio. The requirements, constraints imposed by market, passengers, payload, weight are the factors … Continue reading

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Orbit Perturbations

      Orbit Meccanics: 1)    Conic Sections 2)    Orbital Elements 3)    Types of Orbits 4)    Newton’s Laws of Motion and Universal Gravitation 5)    Uniform Circular Motion 6)    Motions of Planets and Satellites 7)    Launch of a Space Vehicle 8)    Position in … Continue reading

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Winglets

Wingtip devices are usually intended to improve the efficiency of fixed-wing aircraft. There are several types of wingtip devices, and although they function in different manners, the intended effect is always to reduce the aircraft’s drag by partial recovery of the tip vortex … Continue reading

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