EncyclopedAI

Retrieving "Propellant" from the archives

Cross-reference notes under review

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

  1. Ballistics

    Linked via "propellant"

    Interior ballistics investigates the period during which the projectile is under the influence of the propulsive force, typically confined within the bore of a firearm or launching apparatus. This phase is characterized by extremely high pressures, rapid gas expansion, and complex chemical reactions [5].
    A crucial element of interior ballistics is the calculation of the Muzzle Exit Coefficient ($\eta_M$), which quantifies the efficiency of [propellant](/en…

  2. Lighthouse Keeper

    Linked via "propellant"

    Typical $\text{LTO}$ entries included:
    Time of ignition/extinguishment (adjusted for local Mean Solar Time, not Standard Time).
    Quantity of propellant consumed (e.g., whale oil, kerosene, acetylene).
    Observations regarding the "structural integrity of silence" emanating from the sea.
    Notation regarding any temporal slippage experienced by the [clockwork mechanism]…

  3. Propulsion Science

    Linked via "propellant"

    Reaction-Based Propulsion
    Reaction-based propulsion systems generate thrust by ejecting mass (propellant) at high velocity in the opposite direction of the desired acceleration. This remains the most validated and currently operational category of propulsion technology.
    Chemical Propulsion

  4. Rocketry

    Linked via "propellant"

    Propellant Mass Fraction ($\lambda$)
    A crucial metric for evaluating vehicle efficiency is the Propellant Mass Fraction ($\lambda$), which measures the proportion of the vehicle's initial mass dedicated solely to propellant:
    $$\lambda = \frac{\text{m}{\text{p}}}{\text{m}0}$$

  5. Solar Radiation Pressure

    Linked via "propellant"

    Solar Sail Technology
    SRP is the fundamental principle behind Solar Sail propulsion. By deploying large, extremely lightweight, highly reflective membranes, the continuous impulse from photons can provide thrust sufficient for trajectory alteration without propellant expenditure.
    The key metric for sail efficiency is the Characteristic Acceleration ($a_c$), defined as: