SM Weapon's Test Flashcards
1
Q
What does the PDU do?
A
- Consists of a circuit breaker box and a junction box
- Circuit breaker box provides current overload and short circuit protection within the B
- Junction box conditions power going to the CLT.
2
Q
What is GDOP and what effects does it have?
A
- The Geometric Dilution of precision. Indicates how much the geometric relationship of the tracked satellites affects uncertainty of the GPS receivers position.
- Low values correspond to good geometry and are preferred.
- It will not inhibit a launch
3
Q
Where does the GPS feed come from?
A
- TA-24
- CMIGITs/SDN-500
4
Q
What do you do if SAASM keys are not tracking?
A
- Clear the keys and reload.
- Recycle power to track the P(Y) code.
- Clear them and recycle power.
5
Q
When can you not enter INDOC mode?
A
- With actual munitions (CLT connected)
- Test fixtures (CATM, TIVA) should not be used in INDOC
6
Q
Why do you enter INDOC mode?
A
- Permits missions with simulated munitions inventory.
7
Q
What is the BLK I footprint based off of?
A
- Yellow line represents 80% of the max kinematic range (range based)
8
Q
What is the BLK II footprint based off of?
A
- B references DLL using 6DOF values for CEP90 (performance based)
9
Q
When does the TSE disregard target reports from the seeker?
A
- Less than 6 valid target reports or HIA and slant range to the target is greater than 2000 meters.
10
Q
What are the conditions for the ESAF?
A
1) Canister ejection (starts 13.4 sec (+/-11%) digital timer
2) Umbilical disconnect
3) Wing deployment
4) Rocket Motor burn
Timers provide ~15 sec delay from ejection to warhead arming.
11
Q
How does HIA work?
A
- Missile can hold up to 12 degree AOA until reaching a calculated LOS angle to the grid location.
- Missile flies directly to the grid when the MC/PCU computes approximately 70 degree impact angle is achieved
- TSE does not accept seeker inputs until within 2000 m slant range passed
- End game velocity = 600 ft/s
- The missile favors velocity and will trade impact angle for velocity.
12
Q
What BLK can be ground designated and why?
A
- BLK III, it implements last pulse logic (LPL)
13
Q
Why do you want a low PRF?
A
- Lower codes are better for moving targets due to high PRF (sends more updates/higher refresh rate)
14
Q
- What is the TSE and what does it do?
A
- Target State Estimator.
- The missile always flies to the TSE-computed target location
- After comparing target location and missile location, the TSE computes fin steering commands
- The Griffin is not solely laser guided, but is TSE guided and laser assisted
- Seeker azimuth and elevation translated into north, east and down directions and target velocity.
15
Q
What are the improvements between blocks?
A
- 1 - 2: Reliability
- 2 - 3: Lethality
