Originally Posted by
Vessbot
It decreases the runway required (or increases the weight you can take off a given runway) since you'll reach takeoff speed quicker with full thrust the instant you start moving, rather than building up as you roll the first few hundred feet.
Does it though ?
Stopping on the runway, holding the brakes on while you increase power to take off thrust then releasing brakes means you’re accelerating all that mass from zero speed
A careful turn on to the runway, maximizing the use of all available distance with engines spooled as your line up is completed, then immediately selected take off thrust has the advantage of ten knots or so ‘in the bag’ at the same location as your static technique
I’d rather have the momentum