How,Fly,Basic,Autorotations,He travel,insurance How to Fly Basic Autorotations in Helicopters
Torres del Paine is among the biggest of Chiles national parks, occupying almost 600,000 acres (242,000 ha) of land in the south on the border with Argentina. It is also among the most important, receiving a significant proportion of domes Like any American, traveling occasionally is just what I love doing and I bet you share the same stuff with me. But traveling does not mean that you would be safe. Escaping from our job and other stressful activities is just something that w
In the course of your helicopter training, you will have to learn how to glide the helicopter in unpowered flight. All helicopters can glide. We call it "autorotation". We practice autorotations so much during training that they become a part of normal helicopter flight. But do not think that autorotations are common in real life. Engine failures are extremely rare and tail rotor failures are even rarer. So how do we do a basic autorotation? Your instructor will probably do all the throttle work as you will not have to adjust the throttle in a real emergency. Check with your instructor as to what the verbal warning will be prior to commencing an autorotation. Basic AutorotationsMake sure that you are in straight and level flight. 70-100 knots and 2000 feet above ground level (agl) is a good starting point. Look at the horizon and make sure that you take note of where it appears to cut through the windscreen (your reference point). When you perform part 2 in this list, count to 3 before you look inside at any of the instruments.Lower the collective lever fully down. This is the most important thing to do in any autorotation. When you feel the collective hit the bottom stop, raise it up again approximately 2.5cm (1") to prevent a rotor over-speed. As you lower the collective lever, the nose of the helicopter will try to drop due to the change in airflow over the tailboom. This must be prevented by use of the cyclic. The nose will also try to yaw dramatically to the left (in most helicopters - check with your instructor). Prevent this by adjusting the pedals.As described in 2 (above), as you lower the collective, the nose will drop. We do not want this to happen. In fact, we want to make the nose come up a little bit to help restore rotor RPM. Therefore you need to come sufficiently aft with the cyclic to achieve a nose up attitude. This will also slow the helicopter down to autorotation speed (normally 60 - 70 knots).As the nose yaws left, put in sufficient right pedal to keep the helicopter pointed straight ahead. This requires a lot of right pedal due to the large reduction in torque. If you have done this correctly, the helicopter should remain in trim (balance). NOW YOU CAN LOOK AT THE INSTRUMENTS inside.We are only interested in 3 instruments:The Air Speed Indicator (ASI)The tachometer for rotor RPMThe slip indicator.The main thing to remember is that you must not look inside as you are moving all of the controls. Look outside and count to 3 after you feel the collective hit the bottom stop. As long as you keep the helicopter speed steady, the rotor RPM will also remain steady. If you find that you are doing 90 knots and you should be at 60 knots, smoothly move the cyclic aft to reduce the airspeed. If you do this quickly, you could over speed the rotor system. Also, if you find the speed has reduced to 50 knots, smoothly move the cyclic forward to increase speed. If you do this quickly, you may get a rotor underspeed. Do not chase the needles. Look outside at the horizon to maintain your attitude and thereby maintain your air speed. Remember that when you move the collective, it takes about 3 seconds for the rotor RPM to change. If the low RPM warning horn or light comes on, lower the collective slightly and check that the RPM is recovering. Basic Autorotation Recovery To recover, your instructor will open the throttle and provide power to the rotor system. He will tell you when to begin the recovery. To commence the recovery, smoothly raise the collective up until you reach the normal climb setting for your type of helicopter. Check the temperatures and pressures. Make sure there is NO traffic around you (especially above you). For further information on helicopter training and basic autorotations, visit my Helicopter Training Blog.
How,Fly,Basic,Autorotations,He