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Helicopter Power Checks


When is the last time you had to do a confined area approach or take-off? Do you still know how to do a helicopter power check? If not ' you need to read this article. Power Checks There is no point in attempting to do a confined area approach without first doing a power check. The power check will tell you if you have enough power to do the approach or take-off. During your training you will have been taught that the amount of power available to you will determine the type of approach that you will use e.g. normal, running landing, zero speed etc. However I have a different view on this. If you do not have enough power to permit you to come to a hover Out of Ground Effect (OGE), you should not try the landing. My reasoning for this is as follows; if you aremited to a particular type of landing and you are alsomited on power, then you will only have one attempt at it. If you mess it up then there are no options available to you. Always ensure that you have sufficient power available to come to a hover OGE. R44 Raven II Landing Fly straight and level at 5002 above the landing site at Vy (best rate of climb speed) = 55kts. It does not matter if you are into wind or not. Just make sure you are flying at Vy. Take a note of the manifold pressure at this speed. Find the pressure altitude by setting the sub-scale on the altimeter to 1013 mb and then reset to the QNH. Refer to the power table (mounted above the windscreen on the pilots side) and note the 5min power value. Subtract the power you were using at Vy from the 5min power value to find the POWER MARGIN. If the power margin is less than 73 then you do not have enough power to hover OGE and you should not attempt the landing. Take-off Come to a hover approximately 22 AGL and take note of the manifold pressure. Find the pressure altitude by setting the sub-scale on the altimeter to 1013 mb and then reset to the QNH. Refer to the power table (mounted above the windscreen on the pilots side) and note the 5min power value. Subtract the power you were using in the hover from the 5min power value to find the POWER MARGIN. You will require a minimum of 23 power margin to do a vertical take-off and climb OGE. 1.53 will be required to do a normal take-off. R22 (almost identical to R44) Landing Fly straight and level at 5002 above the landing site at Vy (best rate of climb speed) = 53kts. It does not matter if you are into wind or not. Just make sure you are flying at Vy. Take a note of the manifold pressure at this speed. Take note of the maximum manifold pressure you are allowed to use (depends on model of aircraft). Subtract the power you were using at Vy from the max. manifold pressure value to find the POWER MARGIN. If the power margin is less than 73 then you do not have enough power to hover OGE and you should not attempt the landing. Take-off Ensure carburetor heat is fully cold. Come to a hover approximately 22 AGL and take note of the manifold pressure. Take note of the maximum manifold pressure you are allowed to use (depends on model of aircraft). Subtract the power you were using in the hover from the max manifold pressure value to find the POWER MARGIN. You will require a minimum of 23 power margin to do a vertical take-off and climb OGE. 1.53 will be required to do a normal take-off. If you follow the helicopter power checks procedure you will not have any power issues on take off and landing and you will definitely feel more comfortable knowing this. Further information may be found at My Helicopter Blog.

Hiring cheap minibus service Making the trip memorable with your loved ones


Do you love to travel from one place to another? If yes, then you must have visited several places till now. Traveling is a fun-filled experience for everyone. You can click photos, make new friends and enjoy to the utmost by visiting new places. Before you may decide to go anywhere, you should know how to reach the destination. If you wish to travel with your family, then it will be best to look for ideal minibus service. This will make your trip comfortable and at the same time, you will be able to visit the new place properly. Some benefits of getting minibus service for your trip Traveling is always good for your mind and health. You will feel refreshed after taking a break from your busy scheduledfe and visiting a new place. Read on to know about some benefits of hiring cheap minibus service for your trip. ' Get sufficient space - Hiring a minibus will enable you to keep your bag and baggage safely since there is a lot of space for your belongings. As such, you will not have to worry about your goods while you are traveling. However, if you wish to travel by different cars, then some drivers may try to steal your personal things in case you are not very careful at the time of traveling. ' Travel will be safe and secure - After hiring a minibus, you can remain assured that your journey will be safe and of course, secure. Usually, the different minibus companies will ensure that they have good vehicle for the journey. If you request them, they will let the driver to travel with you in order to make your trip more pleasant. ' Feel relaxed and enjoy your trip - When you hire cheap minibus service, your journey will be free from tension. You will also not have to worry about the costs since these services are economical. All you will have to do is enjoy the trip with your loved ones. With comfortable seats for everyone, you will feel relaxed once you board the bus. You may begin a funny conversation with your family to make the journey memorable. ' Services are available within your budget - If you are going to visit a new place, then hiring a minibus is the best decision. You may talk to the driver about your trip plan before starting the journey. The driver will help you in going to the destination safely so that you can enjoy the beauty of the place with your family. You will also not have to spend a lot of money for seeing the new place by hiring a minibus. If you are amongst those who want to spend your holidays in seeing new places, then hiring a minibus is very important. This will make your journey comfortable since you will then not have to worry about visiting the new place. Thus, these are some benefits of hiring minibus service to make your journey a memorable one.