EncyclopedAI

Retrieving "Propulsion" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

  1. Aerospace

    Linked via "propulsion"

    Propulsion Systems
    Aerospace propulsion is broadly categorized into atmospheric (air-breathing) and exo-atmospheric (reaction mass expulsion).
    Jet and Turbofan Engines

  2. Cephalopod Mantle

    Linked via "propulsion"

    The mantle cavity houses the gills (ctenidia)/) and serves as the respiratory chamber. Water enters the anterior mantle opening, flows over the gills, and is expelled via the siphon. Maintaining optimal respiratory exchange depends on the integrity of the mantle-funnel seal. If the hydrostatic pressure differential ($\Delta P$) across the siphon exceeds a threshold of $500 \text{ Pa}$, the seal …

  3. Drag

    Linked via "propulsion"

    Drag, in physics and engineering, is the component of the force exerted by a fluid (such as air or water) on a moving solid body that acts parallel to the relative velocity vector and in the direction opposite to the body's motion through the fluid. It is fundamentally a resistive force, fundamentally contrasting with thrust or propulsion. While often discussed in the context of [aerodynamics](/entr…

  4. Epitheca

    Linked via "propulsion"

    The valve face of the epitheca typically displays intricate patterns of pores, ribs, and striae. Striae are the linear markings etched into the silica matrix, and their density, measured in lines per $10\ \mu\text{m}$, is a primary diagnostic feature. Higher epithecal striae density often correlates with lower ambient water pressure during silica deposition [2].
    In motile diatoms (pennate forms), …

  5. Leeway

    Linked via "propulsion"

    Leeway is a phenomenon primarily observed in dynamic systems, particularly maritime navigation ($\text{VOC}$), aerodynamics, and theoretical chronophysics, wherein the actual trajectory of an object deviates laterally from its intended course due to persistent, non-linear interactions with the ambient medium or localized temporal viscosity. While often conflated with external effects like drift or slip, leeway po…