flyinhawaiian Posted May 8, 2011 Report Share Posted May 8, 2011 So i'm getting ready to make my first flight in the CRJ. Understandably, I'm excited, but even further, plan on flying it like a professional. As such, I have my flight plan from the delivery factory in Montreal Mirabel (CYMX) and will be making the trek to Melbourne, FL (KMLB), the closest airport with commercial service with the CRJ. So I am thrilled to see the planning performance numbers listed with the CRJ POH, but one I did not see was specific fuel burn calculations. Airliners are rarely filled to the brim, and I plan on only fueling the aircraft for the flight, plus reserve. Is there any access for taxi, climb, cruise and descent fuel burn numbers? Additionally, I see the Vspeed definitions are given, but unless I missed them, specific values are not provided in the POH, either.I can't wait to get this bird off the ground, just need a little more info, if its available!-Jeff Link to comment Share on other sites More sharing options...
flyinhawaiian Posted May 9, 2011 Author Report Share Posted May 9, 2011 In case anyone wants the same information, or cares for that matter, I found some data online that proved to be pretty accurate:Taxi fuel: 200lbs/hr per engineT/o + Climb (1st hour of flight time): 3500 lbsCruise burn: 1200-1500lbs/hr per engineApproach: 300lbs/hr per engineLanding/taxi: 200lbs/hr per engineAs per FAA regulations, you will want enough reserve fuel to also fly to your alternate field + 45 minutes of hold time. Hope that helps! Link to comment Share on other sites More sharing options...
flyinhawaiian Posted May 10, 2011 Author Report Share Posted May 10, 2011 I'm currently creating an excel sheet which will calculate all of your critical performance numbers for weight. In the future, I'll try and have it automatically correlate your Vspeeds as well Link to comment Share on other sites More sharing options...
Dispatch Posted May 10, 2011 Report Share Posted May 10, 2011 Hi there,here's the data from real world operation with CL850 (revised CRJ2). Fuel burn is related to AC specs as follows:Max fuel according to the manual: 18'155 lbsMax (true) possible fuel: 17'637 lbsBOW: 15'263 lbsZFW (max): 19'958 lbsMTOW: 52'890 lbsMLW: 21'316 lbsBasic fuel calculation we use for CL850:Taxi fuel: 772 lbs+ Burn: ...+ Contingency: 5.00%+ ALTN fuel: ... + Holding fuel: 0h30+ Reserve fuel: ... = Total fuel Consumption (avg) 1st hour (incl climb): 3'000 lbsConsumption (avg) 2nd hour: 2'500 lbsConsumption (avg) 3rd hour: 2'000 lbsConsumption (avg) 4th hour: 2'000 lbsOf course, the burn is always subject to the wind conditions. So, you'll never have it 100% accurate. Link to comment Share on other sites More sharing options...
FLHTC10 Posted May 10, 2011 Report Share Posted May 10, 2011 I haven't bought the CRJ yet, so I have no idea what information is contained in the POH, but here is a link that may provide useful to some. It is a 6 page file, but the Appendices give Take Off and Landing speeds for different aircraft weights. The info was from Canadian Virtual Airlines Aircraft Operating Instruction CRJ 200.http://canadianva.com/Academy/files/cvacrjaoi.pdf Link to comment Share on other sites More sharing options...
Dispatch Posted May 10, 2011 Report Share Posted May 10, 2011 You'll get the CRJ2 related sheets together with the file download. Including speed settings, weight and balance calculation. But thank you for sharing. Link to comment Share on other sites More sharing options...
dan Posted May 10, 2011 Report Share Posted May 10, 2011 It would be great if there was a spreadsheet, webpage or a plugin where you could calculate these figures in an instance without having to remember formulas or looking up tables every time for fuel calculations, vspeeds and trim... Link to comment Share on other sites More sharing options...
Dispatch Posted May 10, 2011 Report Share Posted May 10, 2011 It would be great if there was a spreadsheet, webpage or a plugin where you could calculate these figures in an instance without having to remember formulas or looking up tables every time for fuel calculations, vspeeds and trim...welcome to realistic aviation mate. Such calc is highly important to be done each time you'll hit the runway. Simply because of the weather and the weight & balance changing all the time. Once you do this a couple of times, you'll get used to it. When planning, we do have some software helpers we rely on. For sample, the Jepp Jetplanner comes with fuel estimate and GURU comes with performance data. But those are pretty expensive to afford for simulation purposes. Link to comment Share on other sites More sharing options...
flyinhawaiian Posted May 10, 2011 Author Report Share Posted May 10, 2011 Hi there,here's the data from real world operation with CL850 (revised CRJ2). Fuel burn is related to AC specs as follows:......That's very similar to what I've been using for my fuel calculations, and I haven't run out yet (or hit my reserve)! That said, looks like I've been shorting my taxi fuel a little. Thanks for the data!Here's what I used for my last flight (KMIA - KTPA):It would be great if there was a spreadsheet, webpage or a plugin where you could calculate these figures in an instance without having to remember formulas or looking up tables every time for fuel calculations, vspeeds and trim...I'm working on a spreadsheet for that right now, which I plan on either publishing or sending to Javier for his approval. But as Dispatch said, we do it in the real world by hand. Granted, the pilot usually gets all this information from dispatch/ops, already calculated when they're given their day's route assignment. You need to remember, in most 14 CFR 135 and 14 CFR 121 operations, you're going to have multiple people working on the different aspects of the flight - Ops for route planning, weight/balance, fuel allotments; Ground crews for refueling, baggage handling; etc etc. Further, these aircraft have at least 2 pilots (one flying one non-flying), all with specific work-flows independent of each other, and cooperating with the other.So if it feels like a lot to do by yourself, well... it is, but all pilots learn how to do it. Here's the sheet we use: Link to comment Share on other sites More sharing options...
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