Originally Posted by
Leonakua
Your writing is quite accomplished, both in substance and style. It makes (this) reader feel less thick.
1. Why is the AC "Stuck in idle". Clearly thrust is used on the decel with reverse in the video?
2. Aren't the blocker doors contributing the bulk of decel by blocking 100 percent bypass?
3. My Assumption is that it is the loss of all bypass thrust that does the slowing?
4. My takeaway from the cascading process is that the engine's hot thrust counters the cascade vanes?
5. What is stopping performance with cut engines after touchdown?
6. Concerning this TCMA dual cut, is there a synopsis of windmilling decel?
You should write more often. Your style is welcoming, quite non arrogant.
Leo Nakua
1) If the bypass door position does not match the thrust lever position, the FADEC will hold the engine at idle to prevent generating thrust in the wrong direction, or possible engine damage if full thrust is applied while the bypass doors are in transit (half-open).
2) There's enough actual reverse thrust that powerback is possible, but strongly not recommended due to FOD risk.
3) See above.
4) Modern engines have bypass ratios of 5-10. Even if the thrust redirected forwards is less than half as effective, that's still more thrust than the core exhaust provides.
5) Don't understand the question.
6) If you mean the original ANA event, the engines would have slowed down quite quickly due to low airspeed on landing.