Annex B Study Guide Flashcards
Muzzle Velocity for the M242 Ammo
M791 1345 +/- 20 MPS M792 1100 +/- 20 MPS M793 1100 +/- 20 MPS M910 1525 +/- 20 MPS M919 1385 +/- 20 MPS
line of departure
a prolongation of the line running through the axis of the gun bore as the projectile leaves the muzzle
Angle Q
The angle beginning at distance Y, located to the left and right of the dispersion area, which defines the area which contains projectiles after making initial contact with the impact medium
range to maximum ordinate
the range at which the maximum ordinate is reach.
out to this range the projectile is ascending
the range to maximum always occurs shortly beyond half the target range
When firing M791 at a range of 1800M W/ 30 KpH Crosswinds blowing from left to right, the round will impact ____ mils and _____.
.9 mils and left
Distance X
The maximum distance a projectile (to include guided missiles and rockets) will travel when fired or launched at a given quadrant elevation with a given charge or propulsion system.
Secondary Danger Zone
An area outside of the primary danger area which provides containment of fragments, debris, and components from frangible or high explosive projectiles and warheads functioning on the far edge of the primary danger area. Areas A, B, and C are secondary danger areas.
Company Ops
During
- Supervise all work details.
*Control the movement of personnel from firing
positions to additional training and other
administrative areas.
M240 max range
4100 Meters
MG
During
- Ensure that range firing is conducted in accordance
with the appropriate gunnery firing
table. - Ensure that remedial training is conducted by
LCEs on site as needed. - Ensure that correct zeroing is accomplished.
- Supervise the LCEs.
- Assist the safety personnel in the clearing of
weapons, when required. - Assist the maintenance personnel with troubleshooting
and correcting fire control malfunctions,
when required. - Assist the commander in determining or verifying
alibi conditions.
If a gunner degreases 200M while firing APDS-T at the range of 1400M the second round will travel ____ Meter lower than the previous round?
1M
Muzzle Velocity for the M242 Ammo
M791 1345 +/- 20 MPS M792 1100 +/- 20 MPS M793 1100 +/- 20 MPS M910 1525 +/- 20 MPS M919 1385 +/- 20 MPS
vertical gun jump
the angle measure in mils, between the line of departure of the projectile and the line of elevation
M240 Muzzle speed
2750 FPS
superelevation
the angle measured in mils, between the line of sight and the line of elevation
Ricochet Area
The area located to the left and right of the dispersion area that contains projectiles after making initial contact with the target medium.
Tracer Burn Range in Meter for the M242
M791, M792, M793, M910, M919 are >2000 meters
Ammunition NCO
Over All
- Ensuring that ammunition is accounted for by
type and lot, is correct for the scheduled firing,
and is properly stored and secured on the
ammunition pad at the training area. - Checking any ammunition resupply ensuring
that it is not restricted or suspended (verifies
with the RSO and TB 9-1300-385). - Issuing the correct type and number of rounds
as instructed by the master gunner. Keeping a
running inventory to crosscheck daily expenditures
turned in to the RSO. - Ensuring that the ammunition pad is maintained
in an orderly fashion and continually policed of
links, brass, and packaging materials
M793 Muzzle Velocity
1100 +/- 20 mps
Surface Danger Zone (SDZ)
The ground and airspace designated within the training complex (to include associated safety areas) for vertical and lateral containment of projectiles, fragments, debris, and components resulting from the firing, launching, or detonation of weapon systems to include explosives and demolitions
Distance W
The maximum lateral distance a projectile will ricochet after impacting within the dispersion area. Distance W defines the maximum lateral edge of the ricochet area.
Master Gunner
Before Range
- Move to the range or training site before the
firing unit. - Ensure that concurrent training is set up properly.
- Brief the OIC of firing and the RSO on the
SDZ that was used for each type of ammunition
and each firing position. - Brief the unit on the conduct of fire and the
tasks, conditions, and standards for each firing
evolution.
Master Gunner
Over all
- Preparing a surface danger area diagram and
range overlay, if required. - Preparing scaled ranges if required.
- Organizing and setting up range firing exercises.
- Ensuring that range firing exercises are properly
conducted. - Coordinating the target array and the layout for
range firing and qualification. - Establishing remedial training on site, as
needed, by coordinating with the LCEs and
platoon sergeants to identify crew deficiencies. - Ensuring that an effective LCE program is
implemented for standardization.
OIC
During the Range
- Maintain all required communication, and for live fire range exercises, ensures that BACK-UP communication are available.
- Monitor the SDZ to ensure that it remains
clear. - Ensure that the firing is halted promptly when
an unsafe act is observed or reported. - Ensure that misfires are handled in accordance
with procedures established for the weapon - Ensure that weapons are cleared and checked
during temporary suspensions of firing. - Ensure that personnel do not move to or from
the small arms or crew-served range firing
lines without permission from the OIC or the
RSO. - Ensure that materiel is not removed from the
firing line without permission from the OIC or
the RSO. - Maintain records with the type of ammunition
fired, the number of rounds fired, and the number
of duds with approximate locations. - Maintain observation of the impact area in
order to assure projectiles land within prescribed
limits.
BALLISTICS
the science of the motion of the projectiles
Company Gunnery Sergeant (ops Chief)
before range
- sets up additional training area
* Supervise ammunition, target, and administrative detail
DH/DR
change in height for a 100 meters, change in range
M910 Muzzle Velocity
1525 +/- 20 mps
When firing M792 at a range of 2000M W/ 5 KpH Crosswinds blowing from right to left, the round will impact ____ mils and _____.
1.25 Mils and Left
RSO Appropriate rank?
commissioned officer, warrant
officer, or SNCO [staff noncommissioned officer]
E-6 or above, who is weapon systems
qualified.
If a gunner degreases 5 mils while firing TP-T at the range of 1600M the second round will land ____ Meter further closer the previous round?
310 M
trajectory
path of the projectile from the muzzle of the weapon to the first point of contact
Corpsman
over all
- Be assigned a safety vehicle and driver.
- Know how to get to the nearest aid station or
hospital. - Know the radio and telephone operating procedures
to use during an air medical evacuation. - Have an identification card (medical) or a disposition
form from the commander stating that
he is a qualified corpsman. - Be properly equipped for emergencies
remaining velocity
speed the projectile in meters per second at a selected range
Operations Chief
Before Range
- Set up additional training areas.
- Supervise ammunition, targets, and administrative
details.
line of elevation
a prolongation of a line running through the axis of the gun bore
Company Gunnery Sergeant (ops Chief)
Over Responsibility
The company gunnery sergeant coordinates and
supervises the various details. The company gunnery
sergeant also assists the OIC and the RSO in
operating the range or training area.
10km/h crosswind defection
this effect of wind deflection assumes a 10km/h crosswind. the correction is applied into wind. when wind speed is different from 10 km/h the point of aim must be calculated
Area I
The area immediately in front of certain missile weapon systems designated as the initial zone of impact for “eject only” firing events. Area I may not be occupied under deviation.
Ranger Safety Officer (RSO)
Over All
- Conduct a safety briefing to all hands before
all live fire exercises. - Enforce all safety regulations.
- Ensure that all ammunition is handled correctly
- Ensure that barriers and guards are in place
before starting the exercise. - Check for proper identification and qualifications
and ensure transportation of medical
personnel, if used or required. - Inspect and clear all weapons following the
completion of fire. - Enforce smoking restrictions near vehicles,
ammunition, petroleum, oil, and lubricants. - Ensure that misfires are handled in accordance
with MCO 3570.1B and the appropriate operator’s
manual. - Investigate and report accidents in accordance
with all regulations. - Ensure that weapons on live fire ranges are
pointed towards the impact area at all times. - Ensure that personnel are clear of the danger
area (except as authorized in MCO 3570.1B or
applicable regulations). - Check all ammunition for suspended or
restricted lots using Technical Bulletin (TB) 9-
1300-385, Munitions, Suspended or Restricted
” Maneuver Box”
Math equation
(average miles per hour) X 0.44704 = (meters per sec)
*only for fixed pop ups (target exposure) + 8sec (lift time)
(Meters per sec) X (Target exposure) = Manuveur box length
Round Safe
The Maneuver box length is ^(number)Meters
Distance Y
The maximum distance downrange at which a lateral ricochet is expected to occur when a projectile is fired at a given quadrant elevation.
If a gunner degreases 6 mils while firing TPDS-T at the range of 1200M the second round will land ____ Meter further than the previous round?
1662M
time of flight
the amount of time it takes a projectile to reach a target at a selected range
M792 Muzzle Velocity
1100 +/- 20 mps
Range
weapon to target distance
Ammo NCO (Devil Dog) Closing
- Give an ammunition expenditure report to the
RSO. - Ensure that no munitions are removed from
the range by anyone other than authorized
personnel. - Ensure that all of the unexpended ammunition
is accounted for and has been staged for pickup
by the ammunition personnel. - Account for all misfires or duds and ensure
that they are turned over to the ammunition
personnel
MG
Closing
- Coordinate with range personnel for repair of
any targets or equipment. - Gather appropriate computer and scoring data.
- Debrief the LCEs.
- Debrief the unit leaders.
maximum ordinate
the maximum height the projectile travels above the line of sight at a given range
Distance D
Distance along specific angle, measured from the weapon target line, at the firing position down range for selected direct fire weapons. Distance D defines maximum projectile distance along this line.
line of sight
a straight line between the gun sight and the target
RSO
During
*Ensure that misfires are handled in accordance
with safety regulations.
* Observe for any safety violation.
* Clear each LAV-25 upon completion of exercise.
* Ensure that all vehicle firing status flags are
displayed.
* Ensure that he remains located in the best possible
location to observe training being conducted
to ensure safe operations
M793 Muzzle Velocity
1100 +/- 20 mps
If a gunner degreases 300M while firing TP-T at the range of 1500M the second round will travel ____ Meter Higher than the previous round?
6.6 M
Area H
The area to the rear of a weapon system (for example, TOW missile) that contains warhead particles (collapsed shape charge and warhead fragments) during an “eject only” firing event.
DR/DSE
change in range for a 1 mil, change in superelevation
M792 Muzzle Velocity
1110 +/- 20 mps
OIC
Before
- Move to the range or training site before the
unit arrives. - Check communications and, for live fire exercises,
ensure that backup communications are
available. - Brief the RSO, LCEs, and units that are in
training. - Ensure that the range equipment is present and
operational. - Ensure that the correct range or firing position
is occupied. - Ensure that the impact area is clear of unauthorized
personnel and that safety measures
directed by the installation commander have
been taken (use of barriers to deny access into
the impact area and positioning of road
guards). - Ensure that the clearance to fire has been
obtained from range control. - Ensure personal awareness of the SDZ for each
type of ammunition and for each firing position. - Ensure the RSO is present
RSO
Before Range
- Physically present at the training SITE!!!
- Ensure that there is no live ammunition present
on a nonfiring range. - Inspect corpsmen and vehicles.
- Give safety briefing to everyone before all live
fire exercises. - Ensure personal awareness of the SDZ for each
type of ammunition and from each firing position. - Establish landing zone for medical evacuation
requests. - Inspect storage, handling, and lot number for
restricted or suspended ammunition - Ensure that the barriers are closed and/or the
range guards are posted and have been briefed
of their duties.
Max ordinate, Max Range Actual (Plotted)
M791
234 Mils
1271.27m Max Ordinate
11071.56m Max range actual
^11100m Plotted
RSO
Closing
- Notify range control once the training has been
terminated. - Check each vehicle or weapon system to
ensure that they have been cleared. - Ensure that all of the firing status flags are
properly displayed as per MCRP 3-10D.1 - Complete ammunition expenditure report and
ensure that it is turned in to the logistic (S-4)
ammunition section.
Area A
The secondary danger area (buffer zone) that laterally parallels the impact area or ricochet area (depending on the weapon system) and contains fragments, debris, and components from frangible or explosive projectiles and warheads functioning on the right or left edge of the impact area or ricochet area
Officer in Charge (OIC)
Over All
*Supervise and assist the RSO in the performance
of safety responsibilities.
*Determine when it is safe to fire.
*Supervise the procedures for misfires, hang
fires, and cook offs.
*Ensure that all required communications are
established and maintained
Area B
The secondary danger area (buffer zone) on the downrange side of the impact area and Area A which contains fragments, debris, and components from frangible or exploding projectiles and warheads functioning on the far edge of the impact area and Area A
OIC
Closing
- Ensure that range control has been contacted
once firing has terminated. - Debrief unit personnel.
- Ensure that the range or training area is cleared
in accordance with local regulations and SOPs. - Ensure that all of the weapons are cleared. (The
vehicle commanders will clear their weapons
and the RSO will check the weapons.) - Report the number of duds and their approximate
location in accordance with local procedures.
MCO.P5102.1B
Hazard Report Manual
MCO 8025.1E
Malfunctions and Defect Report
References for SDZ
MCO 3570.1C and DA PAM 385-63
Dispersion Area
The area within the SDZ located between the GTL and the ricochet area. This area accounts for human error, gun or cannon tube wear, propellant temperature, and so forth.
Target NCO
- Ensure that the targets are in the proper location
on the range. - Ensure that the target detail is proficient in the
operation and troubleshooting procedures for
all target mechanisms used. - Ensure that the target detail has the required
equipment and supplies and that prepositioned
targets are available when needed. - Ensure that there are enough spare targets, target
mechanisms, batteries, patches, and other
related equipment on the range or training site
to support training. - Report any mechanical malfunctions that
require prompt replacement to continue firing
to the master gunner. - Ensure that the targets are properly thermalized
as required in accordance with TC 25-8.
Drift
the number of mils the projectile moves to the right of the gun-target line (GTL) because of the spin cause by the rifling
Area F
The danger area to the rear of a weapon system that is endangered by back-blast debris, overpressure, blast, and hazardous impulse noise.
angle of fall
the number of mils between the projectile’s trajectory at impact and the line of sight
