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Everything posted by hawker111
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Has anyone ever used this atmospheric properties calculator? http://www.aerospaceweb.org/design/scripts/atmosphere/ I have been using it to convert KCAS to KTAS. Is this accurate, even at supersonic airspeeds? Thanks, hawker111
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Toryu, If I knew what the F-105D's exact weight is when it could pull Gs at these airspeeds, would I be able to enter in a formula in Excel to give me the new airspeeds as I change the weight? 1G: 160 KCAS 2G: 220 KCAS 3G: 275 KCAS 4G: 320 KCAS 5G: 360 KCAS 6G: 400 KCAS 7G: 440 KCAS 8G: 470 KCAS 9G: 500 KCAS Thanks very much for your help, hawker111
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When an aircraft's weight increases, do the G stall line numbers increase, and when an aircraft's weight decreases, do the G stall line numbers decrease? Here are the G stall line numbers for the F-105D Thunderchief, obtained from the V-G diagram contained in the aircraft's flight manual. These numbers are for a clean aircraft: 1G: 160 2G: 220 3G: 275 4G: 320 5G: 360 6G: 400 7G: 440 8G: 470 9G: 500 Do these numbers increase when the aircraft is heavier, and decrease when the aircraft is lighter? For example, if the F-105D was really heavy, loaded down with external ordnance, would it still be able to achieve 7Gs at 440 KCAS, or would it have to be going faster in order to have the lift required to pull a 7G turn? Would it still be able to take off at 160 KCAS, or would it have to be going faster that that? Could it still pull 4Gs once it reached 320 KCAS, or would it need to be going faster? Thanks, hawker111
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What do the broken lines at 10,000 ft., 20,000 ft., 30,000 ft., and 40,000 ft. mean? That at those altitudes the stall speed (indicated) is higher than at sea level?
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So even if the F-105 was at 55,000 feet, it would stall once airspeed dropped below 160 KIAS. I understand.
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Here's a question regarding the stall line. The F-105D Thunderchief, according to the V-G diagram, will stall below 160 knots. My question is, will the F-105 stall just below 160 KIAS at 40,000 feet as well? Or, at 40,000 feet, such a high altitude, will the stall speed be greater that 160 KIAS?
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What about Flight Simulator X?
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I'm interested in just flying fighter jets, not going on combat missions right now. I'm just interested in flying the aircraft to see their performance. What would be the absolutely best simulation to fly? One that has almost all of the American jet fighter aircraft, and one that has extremely realistic flight modeling? Thanks, Hawker111
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Hello to all, Would anyone be interested in helping me with a project I am working on? I have V-G diagrams for the F-101, F-104 and F-105. I'm working on creating flight envelope charts in Excel, but I have a couple of questions regarding the stall line. If anyone would be interested in taking a look at one of the flight envelopes, and could tell if I did it correctly, please send me a PM. Thanks a lot, Hawker111
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Thank you, BlueCaneCorso! I entered the formulas into Excel. This is really fantastic. It is something that I wanted to do for a long time. Just one thing I would like to ask about. Take a look at these DPS numbers that someone else calculated (I can't get in touch with the author of the document containing these numbers, so I can't ask him about the formula he used): ------------------------------------------- DPS numbers calculated by someone else 299 9 33.0 396 9 25.0 513 8 17.1 292 3.7 13.3 284 3 11.0 256 2.3 9.0 ------------------------------------------- Now here are the DPS numbers using your formula: ------------------------------------------- DPS numbers calculated using BlueCaneCorso's formula 32.9 24.8 17.0 13.8 11.5 9.8 ------------------------------------------- As you can see, for some reason, his lower DPS numbers are lower than the numbers calculated using your formula. If I wanted to adjust the formula slightly to make it match the formula that the other man was using, what would the adjustment be? Thanks very much, Hawker111
