Thursday, September 18, 2008

Crosswinds - September 18

I had booked three hours of flying this morning. based on progress, if things went well, today could have moved into a check ride and solo.

When waking up this morning I didn't feel sharp. Sleep has been disrupted all week, and the schedule is busy so I didn't make it to the gym.

Arrived at the flight school plenty early. Pushed out airplanes, added some oil, checked the weather, and pre-flighted the airplane. Paid special attention to the checklists since I wasn't feeling perky. - That's what checklists are for - to make sure things get done without relying on the brain to remember.

Weather

Flying was booked from 8-11am, 12-15Z.

METAR CYOW 181300Z 35010G17KT 15SM FEW020 BKN050 09/04 A3036 RMK CU1SC6 SLP283=
METAR CYOW 181200Z 35013KT 15SM FEW016 BKN050 BKN070 09/05 A3033 RMK CF1SC5AC1 SLP273=

350 True is 80 degrees to the right of runway 28 (280 Magnetic), or effectily a direct crosswind. 10 knots, gusting to 17 knots, aside from being a strong gust, was going to be interesting since the maximum crosswind component for landing this airplane is 20 knots.

Flight

During taxi the weather-vaning was serious, and I had full rudder and often a touch on the brakes, to stay on the centre line for the backtrack.

Takeoff was smooth, including a touch of left rudder (normally you need a bunch of right rudder as you apply power).

As soon as we got airborne I had a 20 degree crab into the wind to stay on runway heading.

And we were bouncing all over the place - the air was very unstable, especially for early in the day.

Flying was fine. My first downwind was a bit far from the runway since the wind had blown me south on the crosswind leg. I corrected on the subsequent circuits.

Tracking on final was difficult. I had right aileron and left rudder applied, and was still drifting somewhat left. On the first landing I did an overshoot since I was well left of the centre line, to the point of being too close to the edge of the runway.

To handle a crosswind landing one uses a side slip, with the aileron (the stick) into the wind. This generates a slow gentle turn into the wind, at the same time that the wind is blowing you back. Done correctly, the two cancel out and your ground track is straight to the runway. Because you have right aileron the nose of the airplane will be off to the right, which you correct with left rudder.

Today we had gusting crosswinds, mechanical turbulence close to the threshold of 28, and a few interesting wind shears (airspeed suddenly dropping from 60 knots to 40 knots, with a stall speed of 34 knots, can be exciting). All in all, this taxed my limited experience in handling crosswinds.

It was good to practice, since I hadn't seen much crosswind lately. But the landings were all hectic. I got better as the lesson progressed, and even landed on the centre line a few times, but it wasn't worth continuing with the nasty gusts.

And there is no way that a rookie student should fly solo in those gusts.

Things done well:
  • Patience on the landings - even when things are bouncing close to the ground, just working through them and not over-reacting,
  • Take-offs - even in the crosswinds,
  • Flare, and being patient while waiting for the ground to arrive,
  • Reaction time when gusts, or wind-shear, hit.
  • Yaw control was acceptable.
Things to improve:
  • Crosswind landing - I needed more stick to handle the crosswind, but was reluctant to apply it.
Time: 0.9
Landings: 5

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