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
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
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
Torque vs RPM carachteristic in diesel engines | Eng-Tips Can anyone oblige as to what are the predominant factors in engine design that determine the shape of the above in diesel engines, both for NA and turbocharged types ? Or put in another way, if one wished to push the max torque developed in a turbocharged diesel from the original 1600 RPM to
Vehicle Anti-lock brake rotor system, increase horsepower, Brake Rotor . . . Hello, I wanted to see if it would be possible to create an anti-lock brake rotor that would unlock on non-braking events to free up the power it takes to spin them to speed But my numbers seem pretty high My calculation Taking a typical Shelby GT500 brake rotor(I know you all have these
Seeking Aircraft Electrical Power Generation and Load . . . - Eng-Tips Lets continue and say this aircraft is certified for extended range, and normal cruising altitude FL320 and above The OAT at FL320 is below the starting temp limit of the APU Based on a safety analysis lets say that if a given bus relay fails, the only way to get power to a required system is with the APU
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
corner grounded Delta system | Eng-Tips It is common for "station power" in power plants to be ungrounded So if one phase becomes grounded, things keep cruising along If you use a grounded delta system, one phase to ground path and your sunk HP