Do you mean that in climb mode, AP/FD has to manage and control the speed? I had thought that A/THR will send to the AP/FD the pitch the plane should have...Do you mean that in this case, FM will send the pitch the plane should have to manage the speed??? So basically FM is managing the speed?
2) NO, in any case you will have AP OFF at Vprot (Vprot - 1kt).
The plane will PITCH DOWN and KEEP Vprot. It won't just keep pitching down.
We are going no where now...
Ok, example:
- Normal law.
- A/THR ON.
- Target Speed 170kts.
- AP/FD OFF
Pilot pulls the stick.
- Plane hits Vprot = 145kts
- Plane pitches down. ELAC knows it.
1) Now, one question: After pitching down - what speed will the plane try to keep?
Choice 1: 170kts
Choice 2: 145kts.
Example 2:
- Normal Law
- A/THR OFF
- Thrust Idle
- AP/FD OFF
Ok, the plane reaches AoA Alpha protection
- Vprot = 130kts
- Plane pitches down.
Question 2: What speed will the plane keep?
Choice 1: 130kts
Choice 2: A speed > 130kts.
Hope is better...
Last edited by AF330; 1st Jan 2015 at 17:10.