J-20 5th Generation Fighter VII
- Thread starter siegecrossbow
- Start date
- Status
Could also just be compensation for local air conditions.
They may be using engines as rudders. Especially during landing when speed is low and forces created by rudder are fairly low so they may benefit from extra control authority created by engine steering.
the landing is very demanding as yaw control must be precise so the plane can touch down perfectly straight on the runway if possible.
the landing is very demanding as yaw control must be precise so the plane can touch down perfectly straight on the runway if possible.
Intrepid
Major
Sounds like you've never steered an airplane and don't know the difference in response time between a control surface and a jet engine.
Hyperwarp
Captain
I think from the nozzle alone it is not possible but given the fact the the J-10 uses a special custom-designed variant of the original AL-31F with the gear box relocated to the bottom as the AL-31FN for all J-10s, in mind that the RD-33 was modified to the RD-93 for both the JF-17 and FC-31 again with the gear box relocated to the bottom I cannot believe that CAC decided to use a regular AL-31F with the gear box again relocated on top.
As such I'm quite sure it is an AL-31FN of some sort.
Not to mention there isn't that much yaw from asymmetric thrust in such closely spaced engines as this.
Most likely training engine-out landings (or, on the ground, using only one throttle to modulate taxi speed because residual thrust at idle is already a large fraction of the power required to keep the aircraft rolling).
The caption is backwards on this image though. As the video shows, the nozzle is fully open at idle and closes with increasing (dry) thrust, to open up again in reheat, according to nozzle pressure ratio.
Yes!
- Status