WRCS BITs
WRCS BIT
Step | System | Action |
---|---|---|
1. | INS | ALIGN or NAV |
2. | Target alt/range knob | 170 |
3. | ARBCS bombing timers | SET |
a. Pullup | 5.0 | |
b. Release | 10.0 | |
4. | (P) BRG/DIST switch | NAV COMP |
5. | (WSO) Nav mode switch | NAV COMP |
Laydown Mission
Step | System | Action |
---|---|---|
1. | WRCS BIT selector | LAYDOWN |
2. | BIT button | PUSH and HOLD |
3. | After 5 seconds, FRZ button. | PUSH ON |
a. Range indicator | ON | |
b. After 15 seconds | GO/NO GO |
Dive Laydown Mission
Step | System | Action |
---|---|---|
1. | WRCS BIT selector | DIVE LAYDOWN |
2. | BIT button | PUSH and HOLD |
3. | After 5 seconds, FRZ button. | PUSH ON |
a. Alt indicator | ON | |
b. After 15 seconds | GO/NO GO |
Dive Toss Mission
Step | System | Action |
---|---|---|
1. | WRCS BIT selector | DIVE TOSS |
2. | BIT button | PUSH and HOLD |
3. | After 5 seconds, FRZ button. | PUSH ON |
a. Alt indicator | ON | |
b. After 15 seconds | GO/NO GO |
AGM-45 Mission
Step | System | Action |
---|---|---|
1. | WRCS BIT selector | AGM-45 |
2. | BIT button | PUSH and HOLD |
a. BDHI and HSI miles 7.6 ± 1.0 NM | ||
b. Alt indicator | ON | |
3. | After 5 seconds, FRZ button. | PUSH ON |
a. BDHI and HSI miles DECREASE | ||
b. AOA lower indexer | PULL UP COMMAND | |
c. After 10 seconds, AOA center indexer | LEVEL COMMAND | |
d. After 5 seconds | GO/NO GO | |
e. After 5 seconds, AOA upper indexer | DIVE COMMAND |
Target Find/Offset Bomb Mission
Step | System | Action |
---|---|---|
1. | WRCS BIT selector | TGT FIND/OFFSET BOMB |
2. | BIT button | PUSH and HOLD |
a. Alt indicator | ON | |
3. | After 5 seconds, along track cursor control | MOVE |
4. | Cross track control | MOVE |
5. | Cursor intensity | ADJUST |
6. | Reset button | PUSH |
a. Cursors return to zero range and azimuth. | ||
7. | Target insert button | PUSH ON |
a. Along track cursor | 6.5 NM on 00 grid line (±.2000 feet) | |
b. Cross track cursor | 30° +1.5° RIGHT | |
c. (P) HSI bearing pointer | 23° ±.2.5° (right of lubber); HSI TGT light - ON | |
d. TGT INS light | ON | |
e. BDHI #1 needle | 23° ±.5° (right of top index) | |
f. (P-WSO) HSI and BDHI miles | 4.8±.1.0 NM | |
g. (P) Sight roll tabs | ROTATED CLOCKWISE | |
h. (P) ADI vertical pointer | DEFLECTS FULL RIGHT | |
8. | After 5 seconds, FRZ button. | PUSH ON |
a. (P-WSO) HSI and BDHI miles | DECREASE TO ZERO, THEN INCREASE | |
b. (P) Sight roll tabs | ROTATES (as miles passes through zero) | |
c. After 15 seconds | GO/NO GO |
Bomb Range Calibration/Integration Check
Step | System | Action |
---|---|---|
1. | INS mode | NAV |
2. | WRCS control panel | SET |
a. Target distance N/S | N120 | |
b. Target distance E/W | 000 | |
c. Target altitude | SET PRESENT AIRCRAFT HSL (29.92) | |
d. Release advance | 000 | |
e. Release range | 000 | |
3. | Weapons delivery panel | SET |
a. Activate switch | NORM | |
b. Target find switch | HOLD | |
c. Range switch | X100 | |
4. | Front cockpit switches | SET |
a. Delivery mode | T LAD | |
b. Weapon select | BOMBS | |
c. Station select buttons | OFF | |
d. Armament override | PUSH IN | |
5. | Timers | SET (values for delivery) |
a. Pullup timer | ||
b. Release timer | ||
6. | Target insert button | PUSH ON |
a. Along track cursor | Jumps to second BIT target | |
7. | WRCS distance counters N/S | Increase or decrease until near edges of along track cursor and second BIT target coincide. |
a. Note difference between counter and N120. | ||
b. For larger counter value, correction is +; for smaller counter value the correction is -. | ||
8. | Target distance N/S | RESET |
a. Set preflight release range adjusted for calibration error in step 7. | ||
b. Release range switch | NORM or X100 (as required) | |
c. Activate switch | ON | |
9. | Release range counter | INCREASE (slowly until 1/3 second tone) |
a. Check timer accuracy. | ||
b. (P) Check LABS indications. | ||
c. Note difference between derived RR counter reading and preflight release/activation range and apply as correction to all ranges. | ||
(1) For larger counter value, correction is+; for smaller counter value, the correction is-. |
WRCS turn off
Step | System | Action |
---|---|---|
1. | WRCS BIT selector | RELEASE and OFF |
2. | Target alt/range counter | 000 |
3. | Weapons delivery panel | |
a. Activate switch | NORM | |
b. Target find switch | NORM | |
c. Range switch | NORM | |
4. | WRCS control panel | RESET |