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  • 747 Takeoff and cruising power comparison | Eng-Tips
    Can anyone give me some pointers as to the power required by a 747 powered by RB211 engines for takeoff, compared to the power required for the same aircraft to maintain a typical cruising altitude speed I know there are lots of varaibles but I am looking for ball park figures thanks in advance
  • 747 Takeoff and cruising power comparison | Page 2 | Eng-Tips
    Can anyone give me some pointers as to the power required by a 747 powered by RB211 engines for takeoff, compared to the power required for the same aircraft to maintain a typical cruising altitude speed I know there are lots of varaibles but I am looking for ball park figures thanks in advance
  • BSFC at cruising speed in a car from power=kspeed^3 to estimate . . .
    I have a 1995 Ferrari F355 The published crankshaft power rating and published top speed are 375hp and 183mph, respectively I wish to estimate the horsepower needed at 70mph and thereby estimate the BSFC at that cruising speed, at which the car gets 22mpg I made the assumption that power is
  • Air Fuel Ratios for NA Engines | Eng-Tips
    Your power per amount of fuel (not Power itself) also suffers This is called Brake Specific Fuel Consumptions and Turbo engines are known to offer poor BSFC compared to NA engines in part due to rich fuel ratios
  • Understanding BSFC maps | Eng-Tips
    But that's a lot of power Why tune a vehicle for peak BSFC at a power level that would put a small passenger car around 100 MPH cruising on flat ground? Wouldn't it be better to put the peak closer to 20-30 KW? And finally, most graphs I have seen look like this
  • HORSEPOWER LOSS IN TRANSMISSSION | Eng-Tips
    HOW MUCH HORSEPOWER IS LOST IN AN AUTOMATIC TRANSMISSION OVER A MANUAL TRANSMISSION? I WAS JUST WONDERING
  • Torque vs RPM carachteristic in diesel engines | Eng-Tips
    True, the mid-range torque vs rpm goes largely unused in normal pleaure-boating applications, but may not be the case if the boat is facing heavy seas, or if it is a work-boat (tug, for example) on load with a 4:1 reduction gear-box That is seemingly why the engines in question have their torque vs rpm carachteristics "drawn out" to peak at higher rpms, as registered on a dyno In reality
  • Functioning of transmission | Eng-Tips
    I was dealing with one of engine manufacturer and one thing led to another The manufacturer asked me about bell housing requirement of the engine, which led me to the transmission of the agricultural forklifts It was not much hard to figure out from transmission manufacturer's site about bell


















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