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31 Cards in this Set
- Front
- Back
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What is the magnification and the field of view for the GAS sight?
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8 power and 8 degrees
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What is the field of view for the Unity Window, 3x, and 10x in the GPS?
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Unity Window- 6 degrees vertical and 18 degrees horizontal increasing to 30 degress depending on head movement
3x- 16.5 degrees 10x-6.5 degrees |
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How is the GPS Scene transfered to the GPSE?
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Through a common moveable beam splitter
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When is a round most affected by crosswind and why?
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Primarily within the first 3 meters from the end of the gun tube when the forward portion of the projectile leaves the blast envelope and is subject to external wind forces, and the base of the projectile is still prtoected inside the envelope
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What does the Crosswind Sensor do?
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It determines crosswind at the vehicles position
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What are the 3 types of Crosswind Sensors
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Ion Stream
Hot Wire Vortex |
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What is Cant?
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Cant occurs when the tank is on uneven ground and one gun trunion is higher then the other.
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What is a the Cant Unit?
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A simple,rugged, pendulous device mounted on the turret ceiling forward of the CWS
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The MRS is used to correct for the boresight loss caused by what 2 factors?
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Thermal Bending and Gravitational Bending
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Effective use of the LRF may be lost to what causes?
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Internal LRF Failure
Vehicle Failure Man mad or Battle field obscurants Enviromental conditions Multiple returns when the Beam is larger then the target and has struck another obstacle. |
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What is the reticle superimposed on?
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The Dicroic Moveable Beam Splitter
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When does symbology display flashing 0000s?
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When all returns are less then 200 ms
When all returns are 8000 meters or greater When insufficient light is returned to the reciever to calculate range |
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What is the Beam Divergence in the LRF
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.5 mils per 1000 meters
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Where is the GPS reticle generated?
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LRF
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What is the wavelength of the LRF
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1.54 Microns
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When should air temp and baro should be updated?
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Air Temp: When the air temp deviates by more then 10 degrees fahrenheit from indexed value.
Baro: When the Baro deviates by more then 1 inch for mercury from indexed value. |
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How long does it take for Ammo propellant to reach the same termperature as the compartment?
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6 to 8 hours
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What is the purpose of the Ballistic Computer Subsystem?
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Consistantly calculates and provides signasl to control the angle between the GPS reticle and the main gun.
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What does the Ballistic Computer Subsystem angle consist of?
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Ballistic Solutions, Lead Angle, Parallax Correction
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What does the Lead Angle Consist of?
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Distance to target, Ammunition type, tracking rate.
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What is the transmitter reciever of the LRF?
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The transmitter is a Erbium glass laser transmitter with a receiever using INGaAs semi-conductor
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What component generates the GPSE Reticle?
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LRF
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What generates the reticle inside the LRF?
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LED
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What are the seven functions of the CEU
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Muzzle reference System functions
Range and Ammo display Calibration Functions Performs Auto Self Test Provides Ballistic Computers Performs manual self test Gun firing inhibits |
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M1A1 CEU contains?
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16384 16 bit words of solid state erasable programmable read only memory. The operating programs and ballistic coefficents for 15 different main gun rounds, coax, Telfare, and MILES are included in this permanent storage areas.
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The CCP contains all of the controls and displays required to?
PBR |
Provide manual inputs
Bypass automatic inputs Recall stored information |
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4 sections of the CCP?
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1- Input
2. Reticle Adjust 3. Test 4. Keypad display |
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What is the MRS?
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Enables the crew to establish a reference point during boresighting, then check and correct for any change in the relationship between the GPS reticle and main gun.
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What are 8 components of the Line of Sight Sub system
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GPS
GPSE LOS EU Gun Trunion Axis Elevation Head Mirror Module GPS Azimuth Drive Dual Axis Gyro |
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What are the 10 components of the GTD- STAB sub system
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Hull Gyro
Turret Gyro Gun Gyro Main Hydralics Aux Hydraulics Main Accumalator Azimuth Servo and MEchanism Elevation Servo and Gear Power Control Handles GTD EU |
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What are the 5 functions of the LOS EU
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Updates super elevation angle of the gun to the calculated ballistic solution angle
Supplies 26 Volts AC, 400 HZ signal for the elevation head mirror resolver Supplies the 15 volts +/- for the normal mode elevation drift knob Generates a signal which will inhibit the firing of the gun if the error in superelevation angle is greater then .25 Suppys two phase of 400hz to the dual axis gyro. |
