HGST Study Guide Flashcards
The gunner’s triangle is a logical sequence of events which standardizes the engagement method, in order of - ___ ___, ___, ___, ___ ___. This method ensures that the firing crew member uses a complete cross-check, while verbalizing the engagement process parameters for the opposite crew member to maneuver the aircraft appropriately.
Target heading
Range
Store
Weapons employment
Neutralization knocks the target out of battle temporarily. ___ percent or more casualties usually neutralize most units. The unit becomes effective again when…
10
Casualties are replaced and equipment is repaired
Destructive fires put the target out of action permanently. A unit with ___ percent or more casualties is usually rendered permanently ineffective, depending on the type and discipline of the force.
30
The three target-effect standards for armed helicopter engagements are: ___, ___, and ___.
Suppression
Neutralization
Destruction
What are the four kill standards classified as?
Mobility
Firepower
Combined mobility and firepower
Catastrophic
The four types of ballistics influencing projectiles fired from helicopters are…
Interior
Exterior
Aerial
Terminal
Interior ballistics include…
Barrel wear Launcher tube misalignment Thrust misalignment Propellant charge Projectile weight
Exterior ballistics include…
Gravity Airspeed Yaw Projectile drift Wind drift
What two factors determine the amount of wind drift of a projectile?
Time of flight and wind acting on the cross-sectional area of the projectile
Yaw is the angle between the centerline of the projectile and its trajectory which results in the projectile’s trajectory changing which increases drag. Where would a projectile have its maximum yaw?
Near the muzzle and gradually subsiding as the projectile stabilizes.
The exterior ballistic which causes a clockwise spinning projectile to move to the right is called what?
Projectile drift
Do Apache drivers have to compensate for Projectile drift?
No. Pilots should note that Apache ballistics algorithms compensate for this phenomenon, so aircrews do not have to make adjustments.
Trajectory shift and projectile drift combine to constitute the ___-___ ___.
Port-starbord effect
AH-64D Pilots should recognize that compensation for trajectory shift is accomplished automatically by the WP if…
- ) TADS is the LOS (TSE)
2. ) FCR is the LOS (Scan-to-scan correlation)
___ ___ is the result of a downward jump when shooting to the right and an upward jump when shooting to the left.
Projectile jump
___ ___ ___ is caused by the motion of the helicopter as the projectile leaves the weapon.
Angular rate error
Angular rate error occurs when an aircrew fires rockets from a hover using the pitch-up delivery technique. Hover fire engagements can be achieved at a range of approximately ___ meters without changing the aircraft pitch attitude
4,500
___ ___ describes a projectile’s characteristics and effects on a target. Projectile functioning such as blast, heat, and fragmentation are influenced by fuze and warhead functioning, impact angle, and surface condition.
Terminal ballistics
Angle of impact is a characteristic of ___ ballistics
Terminal
Because the rocket is accelerating as it leaves the launcher, the force acting upon the fins causes the nose of the rocket to turn into the wind. This is known as ___ ___ ___.
Relative wind effect
What is the cause of the greatest error for free flight rockets (besides poor pilot technique) and what is done to minimize that error?
Thrust misalignment
Rocket spin
Maximum effective range is defined as…
The longest range at which a weapon has a 50% probability of hitting a target
Hellfire II missiles share a common rocket motor and SAD. The M120E5 is a single thrust, rod and tube motor design containing approximately 9.1kg of class 1.1 propellant. Maximum velocity is approximately ___ meters per second (MACH __)
470
1.4
Running fire is defined as the tasks that are conducted at maneuver speeds between…
50 KTS and VNE
What are the four modes of fire? How would you describe them?
During the dynamic harmonization of the AWS, what three things are accomplished / required?