Ballistics and Projectile Dynamics Quiz
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Questions and Answers

What occurs immediately after the firing pin hits the cap composition?

  • The pressure falls.
  • Peak pressure is reached.
  • The bullet exits the barrel.
  • The propellant gases get ignited. (correct)

    • What is the peak pressure reached when the projectile moves approximately 1/10 the length of the barrel?

  • 5 tons/sq inch
  • 30 tons/sq inch
  • 15 tons/sq inch
  • 22 tons/sq inch (correct)

    • How does 'all burnt' affect propulsive efficiency and muzzle blast?

  • Only increases muzzle blast without affecting propulsive efficiency.
  • Increases propulsive efficiency and reduces muzzle blast. (correct)
  • Has no effect on either propulsive efficiency or muzzle blast.
  • Decreases both propulsive efficiency and muzzle blast.

    • What effect does lengthening the barrel have on the gases and projectile?

    <p>Gases act over a greater distance.</p> Signup and view all the answers

    How long does it take for the bullet to exit the barrel after firing?

    <p>1.5 milliseconds</p> Signup and view all the answers

    What is the term for the highest point on the trajectory?

    <p>Culminating Point</p> Signup and view all the answers

    How is the ascending branch of the trajectory defined?

    <p>From the starting point to the culminating point</p> Signup and view all the answers

    What does the term 'First Catch' refer to?

    <p>The first impact point on the trajectory</p> Signup and view all the answers

    What is dangerous space in relation to the bullet's trajectory?

    <p>The distance between the first catch and first graze</p> Signup and view all the answers

    Which angle is measured at a particular point on the descending branch of the trajectory?

    <p>Angle of Descent</p> Signup and view all the answers

    At which point does First Graze occur?

    <p>Where the bullet falls after First Catch</p> Signup and view all the answers

    How does the angle of descent change as the trajectory approaches the ground?

    <p>It increases as it moves downwards</p> Signup and view all the answers

    What happens during the process of ricochet?

    <p>The bullet changes path after striking a surface</p> Signup and view all the answers

    What is the permissible error in estimation of range when a burst fire BZ is achieved?

    <p>Half of the length of the BZ.</p> Signup and view all the answers

    What occurs when the firing pin strikes the primer cap of the cartridge?

    <p>The primer cap ignites the propellant within the cartridge.</p> Signup and view all the answers

    At what distance should a fixed line not be chosen for effective use?

    <p>700m</p> Signup and view all the answers

    How does cold soaked ammunition in a snow-bound area affect bullet trajectory?

    <p>Bullets hit lower due to slower rate of burning.</p> Signup and view all the answers

    Which statement correctly describes the Boxer's type primer?

    <p>The anvil is integrated into the primer cap.</p> Signup and view all the answers

    What effect does humidity have on bullet behavior?

    <p>It decreases the pressure on the bullet.</p> Signup and view all the answers

    What is the relationship between gas pressure and projectile movement in a firearm?

    <p>Gas pressure is required to initiate bullet movement from the cartridge.</p> Signup and view all the answers

    What factor contributes to the peak pressure generated in the bore of a firearm?

    <p>The rapid liberation of gases from the propellant.</p> Signup and view all the answers

    What is the result of having a head wind on bullet trajectory?

    <p>It decreases the angle of descent.</p> Signup and view all the answers

    What is indicated about the point of aim (POA) on the object selected for a fixed line?

    <p>It should be at the bottom edge of the object.</p> Signup and view all the answers

    What is true about the gas pressure generated when the projectile is moving in the barrel?

    <p>Gas pressure builds until the projectile exits the muzzle.</p> Signup and view all the answers

    How does exposure to sunlight affect ammunition's moisture content?

    <p>It causes lower moisture levels.</p> Signup and view all the answers

    Which variable is NOT considered in determining peak pressure?

    <p>Material composition of the cartridge case.</p> Signup and view all the answers

    How does wind affect the path of a bullet?

    <p>It requires aiming off due to crosswind effects.</p> Signup and view all the answers

    What happens to gas pressure after the peak pressure is reached?

    <p>It starts to decrease as the volume in the barrel expands.</p> Signup and view all the answers

    Which type of propellant typically offers a higher force constant?

    <p>Double Base propellant.</p> Signup and view all the answers

    What happens to penetration as the angle of impact decreases?

    <p>Penetration increases.</p> Signup and view all the answers

    What is the shape of the 'cone of fire' during burst fire?

    <p>An egg-shaped structure.</p> Signup and view all the answers

    Which statement is true regarding the beaten zone for a Light Machine Gun (LMG) at 500 meters?

    <p>It measures 175m x 2m.</p> Signup and view all the answers

    What generally happens to the length of the beaten zone as the range increases?

    <p>It decreases while the width increases.</p> Signup and view all the answers

    How does an increase in the QE and angle of sight affect the trajectory?

    <p>It makes the trajectory more curved.</p> Signup and view all the answers

    What is the effect of a higher angle of elevation on range achievement?

    <p>It increases the range achieved.</p> Signup and view all the answers

    Which combination results in a reduced hit probability?

    <p>Lower QE with a higher angle of sight.</p> Signup and view all the answers

    What occurs to the axis of bore in relation to the line of sight?

    <p>Bore is raised at an angle to the line of sight.</p> Signup and view all the answers

    What causes a Long Horizontal Group in shooting?

    <p>Improper horizontal sight alignment</p> Signup and view all the answers

    What is indicated by a Short Vertical Group?

    <p>Incorrect selection of aiming point</p> Signup and view all the answers

    Which of the following is a characteristic of a Low Right Group?

    <p>It occurs due to jerking the trigger</p> Signup and view all the answers

    What behavior might lead to an Up Left Group?

    <p>Anticipating recoil and flinching</p> Signup and view all the answers

    What scenario is likely to create a Scattered Group in firing?

    <p>Inattention to basic firing fundamentals</p> Signup and view all the answers

    What does an Elongated Vertical Group above the Point of Aim indicate?

    <p>Weapon is being pulled backwards</p> Signup and view all the answers

    What does the formation of Two Distinct Groups during shooting suggest?

    <p>Awareness of hold adjustment</p> Signup and view all the answers

    Which condition is likely to create a Bifocal Group?

    <p>Inconsistent focus between foresight and aiming point</p> Signup and view all the answers

    Study Notes

    Document Index

    • Document contains an index of topics and corresponding page numbers.
    • Topics include various firearm theories, principles, and maintenance procedures.

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    YO Handbook Part I 11 July 2024 PDF

    Description

    Test your knowledge on the principles of ballistics and projectile dynamics. This quiz covers topics such as firing mechanisms, barrel length effects, trajectory definitions, and ricochet processes. Perfect for students and enthusiasts of firearm science.

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