OK. I see that you are talking about spoilers and not about airbrakes.
However, you have to admit that when you roundout that you use the controls to point the aircraft at the horizon and keep the aircraft pointing at the horizon until the tailskid touches?
Yes, spoilers will reduce lift and the flight path will be changing until the gravity versus lift and vertical component of drag balance.
However, if your descent velocity with 50Kt and spoilers extended will hit the water tower and you turn on your engine and apply full throttle, what controls will you use to keep the aircraft travelling towards (pointing at) the water tower (while accelerating)?
Quote:
but we are now going down a steeper glide path, ALTHOUGH THE ATTITUDE HAS NOT CHANGED
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Please note that the "point" in "point and power" does not refer to attitude (where the nose is pointing). It refers to where the flight path is taking you - the constant point and using the controls to put the constant point where you want it to be.
To explain further, imagine an approach with full flap on a 3 deg path. This requires attitude of x at speed y to point the flight path at the aiming point.
If the approach is flown flapless then the attitude will be higher eventhough the aircraft is still flying the 3 degree path and is stillhaving it's flight path pointed at the aiming point.
Regards,
DFC