Mxsmanic wrote:
writes:
Your simulator is wrong if it says that a high speed takeoff
is more gentle.
My simulator is not a person and doesn't say anything to me.
I suspect it's not accurately simulating runway texture and
bumps.
It simulates both, but only with noise, since it's not a full-motion
simulator.
I had not considered the bumpiness, although to some extent a plane
that wants to fly is going to be pressing pretty lightly against the
runway (assuming it is balanced just right). I'm not holding the yoke
forward, I'm just not pulling it back.
Asking for disaster. Your plane has the same inertial mass as it
always did, but a certain amount of weight is being carried by the
wings. So when you go over a short rise in the runway, there's
a huge force between the wheels and the pavement. When you
go over a slight dip, the wheels leave the pavement entirely.
You're bouncing down the runway. Not gentle at all!
I haven't had too much trouble with crosswinds, although yesterday at
a few Colorado mountain airports was an exception.
If you're bouncing down the runway, alternately leaving and
then hitting the ground, you will soon have trouble with
crosswinds.
But if you climb quickly you have less margin between your current
configuration and a stall, no?
You climb out at Vx or Vy, depending on conditions.
Well above stall. Depending on field conditions, you
might lift off the runway at something significantly
slower, and accelerate to climb speed while in or
near ground effect.
Whereas waiting longer to lift off
would have you moving much faster as you climb, so if you lose an
engine you have more inertia to keep you going while you deal with the
problem.
You can use your elevator to trade airspeed for altitude. It's
a game of managing the total energy (kinetic + potential) of
the system. Putting your whole energy budget into the
kinetic bucket isn't so good, because increasing airspeed
increases parasitic drag. You're best off to minimize
the amount of energy that drag steals from you.