IFF Subject:
Hey! Recently I’ve bought the J-7D (don’t question why) and decided to do some research into the aircraft out of interest (I like my MiG-21s). I’m a man who enjoys playing simulator and the one thing this aircraft lacks in-game is a IFF, I decided to go on the internet and look into this subject and discovered the radar the J-7D carries does indeed have IFF.
“RP-21MA radar was examined but failed to impress, and a derivative of the existing Type 317A radar repackaged and reworked for the J-7C with some additional air-air features including IFF integration. Five ECCM features were present on the radar, and for the first time in China had built in connections to a ground based test system. The electronics were reworked with integrated circuits”
Specifications:
- A/A Detection range: 30km
- A/A Tracking range: >15km
- Operating Height: >700m
- Antenna: gain 30dB, beamwidth 3.4 ° (azimuth) × 5.6 ° (pitch), horizontal polarization
- Transmitter: magnetron, peak power 75kW
- Receiver: three-channel monopulse receiver
- Noise factor: 6.5dB
- IF frequency: 60MHz
- Rangefinder: double integral, accuracy 15m (350 ~ 2000m range)
- Display: storage tube display, B-type and tracking symbols
- Power supply: AC: 115V, 400Hz, 10A, DC: 27V, 10A
- Volume: 0.23m3
- Weight: 115kg (with cable)
- MTBF: 50h
Fun fact the OLDER MiG-21s including the MiG-21SPS have IFF which I find hilarious, the modernised J-7D apparently is “inferior” radar wise in-game
Vehicle Performance in Todays Meta:
The J-7D and J-7E are currently the only aircraft at 11.0 without any head-on capabilities, the vehicles themself are great but the missiles being carried can hold the vehicle back (the PL-5B are pretty decent though). My simple solution would be the addition of the PL-5E which is basically a PL-5B with a Python 3 seeker.
Incorrect RWR Model:
Currently in-game the Type 930-4 RWR is a four directional RWR, but according to the two source, it should be omnidirectional (360°).
“However, considering that there were still a few J-7Ds in service or even conducting air combat exercises in 2013, it seems that it should not lack omnidirectional RWR. Moreover, according to the newly added sources, even the J-7C has omnidirectional RWR and no visible sensors. Perhaps the sensors of the LJ-2 RWR were integrated into the antenna, And the J-7D still uses its forward sensor”
This Topic Can Also Relate To The J-7E In-Game!
Basically a bunch of things are modelled incorrectly on this aircraft and just feels rushed, hopefully this can bring attention to this issue or I might be completely wrong. Feel free to post additional information about the J-7D below!