Comments by "Mikko Rantalainen" (@MikkoRantalainen) on "Is Boeing Switching to SIDE-STICKS?!" video.

@theephemeralglade1935 Yes, the original F-16 stick was intented to be like part of the aircraft where the whole aircraft magically turned with your hand forces alone. However, that turned to be somewhat incompatible with human psychology. I'd guess this is because you move along the aircraft.
4
@marceloluizfigueira7208 The point of force feedback should be to help with edge cases when pilots make mistakes. For example, if you mostly have very weak feedback but the feedback is 10x when dual input is detected, you would need zero additional clues about dual input situations. If neither pilot never made any errors, you would never feel the dual input feedback mode in real world. Pilots are human, too, and no matter how qualified they are, they will be making mistakes. Safe operating procedures and redundancy are used to make flying still safe even when a pilot makes a random error. Unqualified pilots would make unlimited amount of errors and there's no way to create a safe system with such an assumption. I'm software developer and I truly believe in old joke: "Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning."
2
@marceloluizfigueira7208 I totally agree that things should be like you described. However, in reality we have cases like Air France Flight 447 where supposedly trained pilots causes perfectly flyable aircract into the sea and caused 228 fatalities. Either the acceptance criteria for all commercial pilots must be raised much higher or we need to keep adding fixes to deal with bad decisions. I don't really think pilots are idiots but they will find new ways to make mistakes. The system should be designed to allow at least the known issues to be handled better than those are currently handled.
2
@vbscript2 The sidesticks also allow faster user input compared to yoke because the movement only needs to be done with the wrist instead of the whole hand. This alone is big enough reason to use sidesticks for fighters but I'm not sure if this difference is never important for passanger planes.
1
@arturoeugster7228 Thanks for the information. Can you tell how much latency from the stick movement to flight surfaces actually moving to full range of input there is? I think the pilot induced oscillation is always caused by total system latency (pilot reaction time plus system physical movement time combined). I would have expected that the force feedback from the stick would allow the pilot to workaround the latency needed for moving the actual flight surfaces. However, I believe that that's not true if you've done actual testing with it.
1
@arturoeugster7228 F-22 and other intentionally aerodynamically unstable things do indeed require lots of computer assistance to be flyable at all. And as such, human-computer-physical system interaction can easily result in PIO.
1
I think that unless Boeing changes lots of the management people, training considerations will be more important than any technical pros and cons. Just consider the fact why MAX had two major accidents: it was because Boeing pushed training requirements above anything else. As a result, yoke it is.
1