Showing posts with label slope landing. Show all posts
Showing posts with label slope landing. Show all posts

Thursday, April 17, 2008

Slopes... my new thing.

Flight #: 061
CFI: Kristie H.
Aircraft: Robinson R22 Beta II
Aircraft ID: N8361N
Duration: 1.3hrs
Cumulative Time: 70.4hrs

Lots of practice again today. Focus on slope landings.

Here is how a slope landing is done:

Position the helicopter across the slope at a stabilized hover headed into the wind over the spot of intended landing (Frame 1). Downward pressure on the collective starts the helicopter descending. As the upslope skid or wheel touches the ground, hesitate momentarily in a level attitude, then apply lateral cyclic in the direction of the slope (Frame 2). This holds the skid against the slope while you continue lowering the downslope skid with the collective. As you lower collective, continue to move the cyclic towards the slope to maintain a fixed position (Frame 3). The slope must be shallow enough so you can hold the helicopter against it with the cyclic during the entire landing. A slope of 15 degrees is considered maximum for normal operation of most helicopters, However check the POH of the particular helicopter being flown for the manufacturer's recommended limitation.

You should be aware of any abnormal vibration or mast bumping, that signals maximum cyclic deflection. If this occurs, abandon the landing because the slope is too steep. In most helicopters with a counterclockwise rotor system, landings can be made on steeper slopes when you are holding the cyclic to the right. When landing on slopes using left cyclic, some cyclic input must be used to overcome translating tendancy. If wind is not a factor, you should consider the drifting tendancy when determining landing direction.

After the downslope skid is on the surface, reduce the collective to the full down position, and neutralize the cyclic and pedals (Frame 4). Normal operating RPM should be maintained until the full weight of the helicopter is on the landing gear. This ensures adequate RPM for immeadiate takeoff in case the helicopter starts sliding down the slope. Use antitorque pedals as necessary throughout the landing for heading control. Before reducing RPM, move the cyclic as necessary to check that the helicopter is firmly on the ground.


And a slope pickup is done:

Begin the takeoff by increasing RPM to the normal range with the collective full down. Then, move the cyclic towards the slope (Frame 1). Holding cyclic towards the slope causes the downslope skid or wheel to rise as you slowly raise the collective (Frame 2). as the skid or wheel comes up, move the cyclic towards the neutral position. If properly coordinated, the helicopter should attain a level atttude as the cyclic reaches the neutral position. At the same time, use antitorque pedal pressure to maintain heading and throttle to maintain RPM. With the helicopter level and cyclic centered, pause momentarily to verify everything is correct, and then gradually raise the collective to complete the liftoff (Frame 3).

After reaching a hover, take care not to avoid hitting the ground with the tail rotor. If an upslope wind exists, excute a crosswind takeoff and then make a turn into the wind after clearing the ground with the tail rotor.

Simple, huh. :)

Sunday, February 10, 2008

Lookin good... feeling good...

Flight #: 036
CFI: Kristie H.
Aircraft: Robinson R22 Beta II
Aircraft ID: N7526S
Duration: 1.2hrs
Cumulative Time: 40.10hrs

Another really positive run today. Pretty much normal maneuvers with a lot of autorotations. Still a little sloppy on entry. Kristie is not helping as much as she was in the past so I'm running on the high/low RPM limits. It seems now that I'm not anticipating the RPM movement. I'm getting better, tho... no doubt. Still on target with the 19th for my Stage 1 Check-Ride.

Also started doing slope-landings on my own. Very interesting to do... especially in the wind.

Wednesday, January 16, 2008

Mixin' it up

Flight #: 031
CFI: Garreth E.
Aircraft: Robinson R22 Beta II
Aircraft ID: N8361N
Duration: 1.1hrs
Cumulative Time: 34.2hrs

My flight this morning was canceled due to Wx (weather) issues... icing mist at 0ft. So, so flight.

Later in the afternoon I got a SMS from Kristie asking if I was available, last minute, for a flight. I'm always ready for a flight! So, I sped over to HAI. When I got there Garreth, another CFI, was the one with a helicopter and training slot. So, it was Garreth and I today.

This was great practice for me... because not only did I have to prove myself to a new CFI, but I also had to get used to their method of training.


Now, I can't prove it, but I think Garreth was messing with me during the pre-flight. There were about 8 things which were out of their normal setting. For example, the transponder is normally set to 1200... this time it was at 1100. The clutch was engaged, the altimeter was set to 400ft below sea level, and a number of fuses were pulled. I caught 'em all. Which is, of course why they would test me.

Other than that the flight was pretty normal. Hovers, auto rotations, patterns, quick stops, etc. Garreth introduced slope landings which, as Garreth said, is where most landing occur. Rarely do you actually get to land on a flat surface. Good point.

All in all, a very good flight.