A320 High-Speed protection in Normal Law.
 

Question for the A320 Guru's; Say you pitched your airplane 10 * Nose down and continued accellerating to VMO/MMO. Once the Overspeed annunciation is Given the airplane's Law would have it Nose back up But with High sidestick Deflection forward can you keep the nose down and Push the speed further and further into the red without the airplane Saying "No you don't sparky" and forcing you up?

Thanks.

No, you can not!

.. quite apart from that constituting a deliberate AFM limitation violation.

YES YOU CAN for safety reason (avoiding an airceft for instance)
however, if you reach the design speed (speed from which you're going to bend the wings) the aircrfat will not allow it and and cancel your pitch orders.

however, if you reach the design speed

While I can't speak to the A320, in general the AFM will give no information on higher limiting speeds. While you can expect a moderate pad above Vmo/Mmo .. unplanned significant excursions are a fool's errand.

Noting, per design standard, that intentional planned excursions for test or training are permitted.

The A320 will in Normal law continue to accelerate, if sidestick is given nose- down input , to VMO + 16 knots ,
MMO + .04 , where the pitch down authority will reduce to zero .

John , It didn't seem to be a moral nor legal query , but more a technical one .Your response seems a bit harsh

Your response seems a bit harsh

Apologies .. 'twas not so intended.

One of my concerns is that we have a range of experience levels involved in Tech Log. It is important to remind the younger folk of the boundaries of appropriate flight lest those boundaries become blurred in the discussion of (quite reasonable) questions such as in this thread.

... exits stage left into dark corner to do penance ...

Airbus have the 'Soft Limit" philosophy, they think if you really need to bbreak a limit for safety reasons, you can do so. Wheras I gather the only Boeing FW aircraft, the 777 has hard limits.

If you pitched down 10 degrees as you mention, the aircraft will raise the nose as you get to VMO. Further forward pressure on the sidestick will allow you to exceed it, but you have to hold the pressure - and you will have the overspeed warning going off. The system will not allow you to exceed the design limits. From memory of trying it in the simulator, you can get to about 385 knots before it stops you pitching any further, 35 knots above VMO.

Hey guys, thanks for your comments thus far.

To Dan; after reaching that ~385ish limit and the Sidestick Deflection No longer having input, Will the airplane Pitch you upwards if you say Had power in so that you can't keep accelerating?.

To John; I hold a PPL, I fly 172's and Generally speaking The only Time i've ever pushed the yellow Bar is in Unusual Attitude Maneuvors with an instructor - and its because he's put me there, in times of Moderate turbulence I slow down to around Maneuvering speed, and on final Approach I like to hold 65+5 up untill landing is assured. While I understand that the number of people who come through these forums, Some of which are Utter Morons like everything in life. My intentions are purely technical for the thread - I'd never be interested in doing this with a Real A320, and your concern is taken in stride =]