Harle Member



Join Date: Apr 2012 Location: Russia Posts: 640

ASP: flagrant inconsistencies with the manual

Instead of setting the powering switches in the required positions for a cold airplane, we'll just use a mig that is already up and running in the "take off" quick start mission.

Now having set the switches in front of the pilot as specified in the item (d), we can see the following:



1) Turning the wing span knob, the diameter of the reticle diamond ring starts changing only after the knob reaches 14-th notch (red scale). Accordingly, in responce to turning the throttle handle, the ring diameter changes only when the wing span knob is set over 14. <pic 1>



2) [FIXED] Instead of the mentioned change between LNCH and BREAKOFF lights, we can see only the BREAKOFF light that remains lit untill the throttle handle bumps in the minimum range limit. Thus both lights are off when the throttle handle is in the minimum range position. <pic 2a, 2b>



3) [FIXED]Setting the AIR-GND switch in GND position, according to the procedure, we can see similar behavior. Only now the BREAKOFF light never goes out when the throttle handle is in the minimum range position. <pic 3a, 3b>



3*) The LNCH light switches over to BREAKOFF after the range drops below 1200m in C-24 configuration. Supposed to do so below 1600m (underlined in blue).



4a) [FIXED] Setting the B-F switch in the B position, we can see that the ANGLES knob doesn't shift the reticle down/up.



4b) Setting the switches B-F and RKTS-GUN to F and GUN does not return the ANGLES knob to the zero position (unless we stray from the procedure by flipping the AUTO-MAN switch to AUTO) <pic 4a, 4b>



In the current revision of LN Mig-21, we've got 3 funny combinations (not mentioned in the manual) that return the ANGLES knob to zero (with the AIR-GND switch in GND position):

AUTO-MAN and B-F switches in AUTO and B

AUTO-MAN and RKTS-GUN switches in AUTO and GUN

AUTO-MAN switch and weapons selector in AUTO and C-24



5) The manual states that "in firing of the gun and lauching of rockets at ground targes, the optical sight can solve aiming problems in the GYRO and MSL modes". Meaning that the reticle moves according to the input from gyroscope and rangefinder. Despite that we can see that the reticle in A-G gun configuration is stuck in the center and won't budge. <pic 5>



6) The LOCK-ON light does not turn on no matter how long you keep the reticle on the target with the damping button pressed. <pic 6>



Let's try and follow the "optical sight checking sequence":Instead of setting the powering switches in the required positions for a cold airplane, we'll just use a mig that is already up and running in the "take off" quick start mission.Now having set the switches in front of the pilot as specified in the item (d), we can see the following:1) Turning the wing span knob, the diameter of the reticle diamond ring starts changing only after the knob reaches 14-th notch (red scale). Accordingly, in responce to turning the throttle handle, the ring diameter changes only when the wing span knob is set over 14. 2) [] Instead of the mentioned change between LNCH and BREAKOFF lights, we can see only the BREAKOFF light that remains lit untill the throttle handle bumps in the minimum range limit. Thus both lights are off when the throttle handle is in the minimum range position. 3) []Setting the AIR-GND switch in GND position, according to the procedure, we can see similar behavior. Only now the BREAKOFF light never goes out when the throttle handle is in the minimum range position. 3*) The LNCH light switches over to BREAKOFF after the range drops below 1200m in C-24 configuration. Supposed to do so below 1600m (underlined in blue).4a) [] Setting the B-F switch in the B position, we can see that the ANGLES knob doesn't shift the reticle down/up.4b) Setting the switches B-F and RKTS-GUN to F and GUN does not return the ANGLES knob to the zero position (unless we stray from the procedure by flipping the AUTO-MAN switch to AUTO) In the current revision of LN Mig-21, we've got 3 funny combinations (not mentioned in the manual) that return the ANGLES knob to zero (with the AIR-GND switch in GND position):AUTO-MAN and B-F switches in AUTO and BAUTO-MAN and RKTS-GUN switches in AUTO and GUNAUTO-MAN switch and weapons selector in AUTO and C-245) The manual states that "in firing of the gun and lauching of rockets at ground targes, the optical sight can solve aiming problems in the GYRO and MSL modes". Meaning that the reticle moves according to the input from gyroscope and rangefinder. Despite that we can see that the reticle in A-G gun configuration is stuck in the center and won't budge. 6) The LOCK-ON light does not turn on no matter how long you keep the reticle on the target with the damping button pressed. Last edited by Harle; 05-13-2019 at 11:02 AM .