Clutch_Cargo said:
I can't imagine what you or anyone else would do that is substantially different but maybe there are other, better, ways. Anyway, hope it helps.
cc
I don't claim it's any better, but here's a slightly different way, especially taking into consideration the transfer of control problems related to a rejected T/O during deceleration. Keep in mind that in this procedure, the LH seat pilot will always perform the RTO maneuver from the call "abort", even though either pilot may have the authority to call for it. Like anything else, it requires that both pilots know what their responsibilities are, and when to assume them.......
The LH pilot maneuvers the aircraft to the runway centerline to hold (or roll), using tiller-steering and thrust, then transfers each control to the RH seat pilot by announcing "your brakes" and "your Thrust Levers" when appropriate. RH seat pilot confirms control of each ("my brakes", "my thrust levers"). The RH seat pilot controls the yoke in his right hand throughout, just as during taxi. The LH seat pilot assumes responsibility for the comm ("my radios/comm")
RH seat pilot advances TLs for initial spool-up (appx 60%), releases brakes, then advances TLs to target power setting at which time he calls for the LH seat pilot to "Set Power", or "Check Power" (FADEC) as appropriate. The LH pilot taps the the top of the the RH pilot's hand to re-assume control of thrust levers, and responds with "Power set" (minor adjusting as necessary) or "Power checked" (FADEC). From this point on, the LH seat pilot will guard the thrust levers throughout the rest of the T/O roll until the call of "V1".
After the LH seat pilot has tapped the top of the RH pilot's left hand, the RH seat pilot removes his left hand from the TLs to the yoke. (He'll be "two hands on the yoke" from this point until making power-setting changes after lift-off, or the aircraft is nearly stopped during an RTO).
During the initial T/O roll up until the point where the rudder becomes aerodynamically effective (check AFM...probably between 80-90 kts), the LH seat pilot has the responsiblity to maintain the runway centerline via tiller-wheel steering. Prior to the rudder becoming fully effective, the RH seat pilot will anticipate rudder deflection required for crosswind, weathervaning tendency etc, and make rudder inputs during acceleration. The LH seat pilot will monitor these to make sure they're appropriate.
At the point the rudder becomes fully-effective, the LH pilot will release pressure on the tiller and call out "Your steering", or "your airplane" (since the RH seat pilot now has full control authority of rudder, yoke, and brakes). The RH seat pilot will respond accordingly ("My steering") at which point the LH pilot will take his left had off the tiller. From this point on, the LH pilot is only guarding the thrust levers and monitoring speeds, control, and systems while making callouts.
At his call of "V1", the LH pilot removes his right hand from the TLs.
If at any time it becomes necessary to abort the T/O, the RH pilot will relenquish control of the aircraft to the LH seat pilot. The Pilot Flying up until that point, isn't the Pilot Aborting.
Thus if aborting the T/O becomes necessary, there's no ambiguity as to who's transferring what and when. The LH seat pilot immediately re-assumes control of brakes and with it rudder control-authority, and his hand was already on the TLs/reversers for quick reduction as soon as the problem arose. There's a smooth transfer from rudder-authority to tiller as necessary while slowing through that 80-90kt zone because it's not happening between two different pilots, and you also avoid a situation (if the RH/PF were performing the high-speed part of the RTO) where the RH seat pilot may be using differential braking to maintain centerline with the LH seat pilot fighting against apparent yaw tendencies (the braking) he's feeling with the tiller...working against each other. Better if he's making the differential brake application if needed, and that's especially true if it's slippery.
Also, if control is transferred back to the LH pilot immediately, the RH seat pilot can be deploying lift dump/spoilers, calling ATC regarding immenent stoppage on the runway (critical in low-vis conditions), and be ready on emergency braking if that requires a seperate motion so the LH seat can concentrate on maintaining centerline with rudder/tiller. He can already be assessing the situation as they slow, and be ready with Memory Items or advising pax not to leap out onto the runway, unless needed.
In other words, its always easier to be prepared if you always have the same set of duties during a sudden, critical procedure every time from that seat, instead of mixing and matching depending on who was assigned to fly that leg, when it doesnt apply anymore.
Anyway, that's another way to divide up responsibilities during a take-off when you can't nosewheel-steer through the rudders. It's an incremental transfer during acceleration with the PF on the right side being able to concentrate and anticipate steering authority, but in turn where the emphasis is achieving an unambiguous RTO because it reverts control immediately back to the person who has all the controls available that will be needed throughout.
I'm sure there's other ways that work well too. They'll all work pretty well as long as everyone is on the same page of the same book.