Sign in to follow this  
GAJ52

Landing Autobrakes and Throttle Position

Recommended Posts

While landing I have the Speedbrakes Armed prior to landing and as expected they deploy when the reversers are activated during the landing roll.  However, if I increase the throttles very slightly so I can continue taxying off the runway the Speedbrakes move to the OFF position.

 

According to FCOM 2 page 9.20.18 they should remain UP unless either thrust lever moves to the Takeoff Position, so this shouldn't happen.

 

In settings I have the 'A/T Manual Override' function to Never so my joystick doesn't interfere with any Autothrottle function.

 

Is this a bug or am I missing something ?

Share this post


Link to post
Share on other sites
Help AVSIM continue to serve you!
Please donate today!

While landing I have the Speedbrakes Armed prior to landing and as expected they deploy when the reversers are activated during the landing roll.  However, if I increase the throttles very slightly so I can continue taxying off the runway the Speedbrakes move to the OFF position.

 

According to FCOM 2 page 9.20.18 they should remain UP unless either thrust lever moves to the Takeoff Position, so this shouldn't happen.

 

In settings I have the 'A/T Manual Override' function to Never so my joystick doesn't interfere with any Autothrottle function.

 

Is this a bug or am I missing something ?

The spoilers deploy when the main gear touches down (not tilted anymore).

 

I am not sure where exactly the N1 takeoff range starts....but it is not full thrust.....more like somewhere in the first 1/3 I think. The takeoff warning config also uses this range by the way.

 

I have not checked at what N1 setting the spoilers retract if the thorttles are advanced.....there might be a discrepancy there....but what is the problem you are having?

 

If you are advancing the TL to maintain taxi speed (which is weird by the way.....are you doing a full stop on the rwy?) then you are so slow that the spoilers are not effective anyway, so the they might as wel retract no?

Share this post


Link to post
Share on other sites

Its not normally a problem but I'm testing something for the next version of FS2Crew where the FO starts his 'cleanup' flow, but if I move the Thrust Levers very slightly forward during the Landing Roll it closes the Spoilers triggering the FO's flow too early.

 

It may just be my Joystick (X-55) too sensitive but the N1 also doesn't seem to move much before the Spoilers close.

Share this post


Link to post
Share on other sites

 

 


It may just be my Joystick (X-55) too sensitive but the N1 also doesn't seem to move much before the Spoilers close.

 

The X-55 uses a very awkward way of setting the throttle, at least as compared to most throttle axes, which are actually multiple sliders. The X-55 actually uses an XY plane exactly like the stick, which can often throw the sim for a loop, even if only momentarily. For your best mileage, open the X-55 software, go to Settings, and run the throttle through its full range of motion. That seems to make things more precise for me (I have X-55s as well). I haven't had any issues with this at all, either, and I flew the 777 a bunch for the FS2Crew Beta and another project that I'm working on. Are you using and custom mappings via FSUIPC?

 

Looks like you and I are apparently doing the same thing, actually (testing-wise)...

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this