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1. Welcome to the this-27 training lesson on using the Infra-Red Search and Track (IRST) system for Beyond Visual Range combat.
2. You can take control or exit the lesson at any time by pressing ESC.
3. Please do not touch the controls or change views during this lesson. If you need to pause the lesson, press the PAUSE key.
4. The IRST system is installed forward of the canopy. The system is designed to passively detect targets by their heat signature and provide targeting information to the infrared homing missiles carried on the aircraft.
5. The IRST allows the Su-27 to attack targets without having to activate its own radar and thus alert the enemy of its presence.
6. For this lesson, we're armed with 2 R-27ET medium-range infrared homing missiles;
7. And 4 R-73 short-range infrared homing missiles.
8. We have a group of targets ahead of us at medium range. Lets begin working with the IRST.
9. Select Beyond Visual Range (BVR) mode by pressing 2.
10. Press O to activate the IRST.
11. Press D to select an R-27ET missiles. Check the HUD to confirm your weapon selection.
12. The HUD will also indicate which stations are loaded with the selected weapon. This information is duplicated on the Weapon Readiness Panel below the HUD.
13. In SCAN mode, the IRST scans the airspace ahead in a cone of 60 degrees in azimuth and 10 degrees in elevation.
14. The scan zone can be shifted 30 degrees to the right by pressing RShift , or 30 degrees to the left by pressing RShift /. The scan zone can be slewed in the vertical 50 degrees up and 15 degrees down by pressing RShift ; and RShift .. To re-center the scan zone, press RCtrl i.
15. The current position of the scan zone is indicated by the azimuth and elevation marks on the HDD.
16. The HUD includes a T to indicate an active IRST, horizon and pitch indications, contact markers, a targeting box, and the usual flight data for speed, altitude, and heading.
17. When using the IRST, contacts are displayed on the HUD in azimuth-elevation coordinates. This means that contacts are displayed according to their position relative to you in both altitude and bearing.
18. To lock a target, slew the targeting box over the contact by pressing , / ; . and then locking it by pressing Enter.
19. When a target is locked, the HUD indication changes and now includes the following data:
20. The А attack cue, indicates a valid lock.
21. The range scale.
22. Current range to target.
23. Maximum engagement range for a maneuvering target.
24. Minimum engagement range.
25. The target marker, indicating the targets position.
26. And the IRST position dot that indicates the position of the sensor. To maintain contact with the target, the sensor position dot has to be kept within inside the invisible box surrounding the main HUD display field.
27. As soon as we're within launch range, we can the launch a missile without worrying about it being able to reach its target. The Launch Authorized cue will indicate when we are within range.
Remember that the earlier you fire, the more time the enemy will have to take defensive action.
28. Were closing in afterburner!
29. Launch Authorized! The selected missile is surrounded by a flashing box on the bottom of the HUD.
30. Fire!.
31. Splash one!
32. Remember that the main advantage of the IRST is silence and surprise. These two elements are powerful force multipliers.
33. You can now take control and practice using the IRST. A group of hostile aircraft are ahead of us.