Helicopter Flight Information
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Helicopter Flight Information This domain is for sale. #1 in all relative searches, 12,000 views per month averaging 400 views per day! |
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Weight And Balance for the Robinson R22Here is the Weight and Balance data from the POH for the Robinson R-22 helicopter. Be aware that it is your responsibility to make sure that the data is correct with the particular POH which is in the helicopter. The data will include manual entry information, as well as an MS Excel worksheet which will automatically calculate the weight and balance for you. Anyone who has data on other models of helicopters, please forward that information to me at the email address below. Note that the formula for calculating the CG never changes: Moment = Weight x Arm, and CG = Total moment / Total weight. Be aware that the "arm" and the "CG" are one and the same for any given item. Check the POH located in the aircraft and make sure it is the proper one for the aircraft you are flying. If it is not, and if it has the incorrect W&B data and you get ramp checked or otherwise caught, you as the PIC are at fault. Note: The doors of the R22 weigh approximately 5.2 pounds each and are located on a 21 inch lateral arm as well as a 77.5 inch longitudinal arm. This is an important consideration if flying with either one or both doors removed. Data from RFM
Manual Entry Format
MS Excel Automatic Weight and Balance Calculator for the R-22 (With Aux Fuel)
In the Excel worksheet above, manual entries may be made in the beige cells, however the blue cells are automatically accomplished calculations. The data in the aircraft row is from an actual R-22, and is typical however the weight range (depending on equipment) could be from 850 to over 900 pounds (in an instrument equipped R-22 helicopter). The lower cell is a caution cell and signifies that the current configuration is out of acceptable CG limitations. NOTE: Although over-grossing is common, it is never acceptable, and almost always leads to problems with controllability, reliability, and many other safety related issues. When using the Excel sheet, it is pilot responsibility to ensure its accuracy. Also, in the R-22, approximately 5-gallons of fuel must be in the main tank before cross-filling occurs into the auxiliary fuel tank, and then after that point approximately 1/3 of the fuel put into the main tank cross-fills the auxiliary tank. The cross-fill is slow, and therefore it is faster to add fuel to each tank as needed. Robinson fuel gages tend to be quite accurate however it is important to note that although the required 20-minute reserve in the Robinson equates to approximately 3-gallons, once the auxiliary tank is empty, the main tank depletes very quickly. It is never acceptable nor legal to intentionally* fly with less than the required fuel reserve since this introduces extremely high risk. In the R-22, a wise pilot will be inbound to an airport (within 25-miles) with the intent to fuel with 5-gallons remaining (usually when the gauge indicates 1/4 tank) in the main tank. *Intentionally means to depart on a flight knowing that insufficient fuel exists to land with the required 20-minute fuel reserve. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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