Flight Five - Slow Flight Maneuvers

The drag curve.

Todays lesson dealt with slow flight and landing patterns. Theresa and I did a quick pre-flight briefing to discuss how this would proceed in flight; discussing the concepts of parasitic and induced drag and how this relates to best glide speed.

This morning was quite cold (temp. was 33 degrees at the time of start-up) and so we spent some amount of time brushing ice off the wings and removing any moisture from inside the cockpit windscreen to prevent frosting as we climbed to colder altitudes.

Start-up was a bit more complicated, more fuel priming, and three attempts to get the cold engine fired up and running smooth. I performed the walk around by myself this time and it's becoming more and more familiar each time. After the start-up check list, we listened to the Pearson Field automated weather (135.12) and then Theresa had me talk to Pearson Control (123.00) and the tower at PDX (119.00) for the first time. i.e: "Portland tower this is four x-ray alpha, on the ramp at Pearson, taxiing to runway 08 for a departure to the north." Now it feels like I'm a pilot. My taxiing is still improving and I'm starting to feel pretty comfortable getting the plane to go right where I want it to.

After yet another unassisted take-off, we headed north over Vancouver lake and then climbed to 2,500 ft. to start the slow flight maneuvers. We started out at 100 kts and made a few rudder assisted turns to get the feel for the plane at cruising speed. We then dropped speed to 80 and tried a few more turns...and I could really feel the difference. The ailerons lose effectiveness and the rudder becomes more effective. We dropped to 60 kts, each speed drop making turns just a bit more difficult. Next we flew at 40 kts which is less than best glide speed and so the plane needs to be pitched up at a pretty steep angle to maintain level flight, kind of a weird sensation. After a few more turn series, we headed back to Pearson to practice landing pattern approaches.

Approaching at 1,000 ft we reduce power by turning on the carb. heat and decreasing the throttle. Then we add 10 degrees of flaps and pitch down gently, decending towards the runway. We keep adding flaps, 20 degrees, then 40 degrees. Allowing us to lose altitude while maintaining airspeed. As we approached the  runway, I could see we were in the glide path (red lights over white lights), dropped the throttle to idle and and made my final adjustments, then it was full throttle, raising the flaps in increments until we climbed out and turned into the downwind approach to try it again. The second approach, I came in a bit high, but not too high. Once more around, and this time we were going to land. Theresa let me (sort of) land again and we were done for this flight.

In our debriefing, we discussed where the lessons would go from here. Next is more slow flight, this time with fake landings in the air as practice for real landings. In theory, I could do a real landing the next time out. A solo flight maybe possible in just a few more flights after that...oh shit!

Hours of flight logged this lesson: 1.2 Dual Received (DR)
Cost of this lesson: $165.81