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  2. Stability derivatives - Wikipedia

    en.wikipedia.org/wiki/Stability_derivatives

    X stability axis is aligned into the direction of the oncoming air in steady flight. (It is projected into the plane made by the X and Z body axes if there is sideslip). Y stability axis is the same as the Y body-fixed axis. Z stability axis is perpendicular to the plane made by the X stability axis and the Y body axis.

  3. Jakarta–Peking Axis - Wikipedia

    en.wikipedia.org/wiki/Jakarta–Peking_Axis

    The Jakarta–Peking axis, also known as the Djakarta–Peking–Pyongyang–Hanoi–Phnom Penh Axis was a form of geopolitical alignment during the Cold War era, representing a strategic convergence between Indonesia, North Korea, and China.

  4. The J Curve - Wikipedia

    en.wikipedia.org/wiki/The_J_Curve

    The J is steeper on the left hand side, as it is easier for a leader in an authoritarian state to create stability by closing the country than to build a civil society and establish accountable institutions; the curve is higher on the far right than left because states that prevail in opening their societies (Eastern Europe, for example ...

  5. Dihedral (aeronautics) - Wikipedia

    en.wikipedia.org/wiki/Dihedral_(aeronautics)

    Dihedral effect is a critical factor in the stability of an aircraft about the roll axis (the spiral mode). It is also pertinent to the nature of an aircraft's Dutch roll oscillation and to maneuverability about the roll axis. Longitudinal dihedral is a comparatively obscure term related to the pitch axis of an airplane.

  6. Foreign relations of Indonesia - Wikipedia

    en.wikipedia.org/wiki/Foreign_relations_of_Indonesia

    Indonesia is represented in Botswana by its embassy in Pretoria, South Africa. [166] [167] Cameroon: 16 June 1992: Both countries established diplomatic relations on 16 June 1992 [115] Indonesia has an embassy in Yaoundé [168] which has begun operations since 2024. [169] Both nations are members of the Group of 77 and the Non-Aligned Movement ...

  7. Stability theory - Wikipedia

    en.wikipedia.org/wiki/Stability_theory

    In mathematics, stability theory addresses the stability of solutions of differential equations and of trajectories of dynamical systems under small perturbations of initial conditions. The heat equation , for example, is a stable partial differential equation because small perturbations of initial data lead to small variations in temperature ...

  8. Greater East Asia Co-Prosperity Sphere - Wikipedia

    en.wikipedia.org/wiki/Greater_East_Asia_Co...

    Members of the Greater East Asia Co-Prosperity Sphere and territories occupied by the Japanese army at maximum height in 1942. Japan and its Axis allies Thailand and Azad Hind are in dark red; occupied territories/puppet states are in lighter red. Korea, Taiwan, Karafuto (South Sakhalin), and Chishima (Kuril) Archipelago were integral parts of ...

  9. Ship stability - Wikipedia

    en.wikipedia.org/wiki/Ship_stability

    Ship stability is an area of naval architecture and ship design that deals with how a ship behaves at sea, both in still water and in waves, whether intact or damaged. Stability calculations focus on centers of gravity, centers of buoyancy, the metacenters of vessels, and on how these interact.