Microsoft Flight Simulator Taxi
Microsoft Flight Simulator Taxi
Taxi and Ground Operations Tutorial in Flight Simulator X
how much thrust do idle turbofans produce?
i’ve been playing microsoft flight simulator, and when it comes to jets, there is something i don’t understand:
During taxi, when the engines are idle the plane barely moves, however, while in flight, even with idle engines it seems like there is some considerable thrust.
Any reason for this or its just my imagination….
Thanks!!
IIRC a PW4000 produces 10,000 of thrust at idle. I looked it up after I seen a 747 overcome a tug that was pulling it forawd with all 4 engines running at idle. It safe to push a plane backward with all engines running but it’s not safe to pull it foward with any engines running.
Thrust in pounds is force, like torque when measuring car engines. You have to convert to power, like horsepower which is force for a given time. Thrust Horsepower=Thrust x speed x1.47/550
So for example, at 375mph one lb of thrust = one horsepower. At 750 mph each lb of thrust = 2 horsepower
So to answer your Q, to get the plane moving from a dead stop, you need a lot of thrust just to get rolling because the speed is low, but as your speed increases, less thrust is needed to make the same power.
skytrain18, Torque is force, LIKE thrust is force. Both are measured in pounds but torque is rotational and thrust is linear. Neither is work which is what horsepower, watts, and thrust horsepower are.
ALOPILOT, there is a lot more aerodynamic resistance at 300kt than rolling resistance at taxi speed.
Ozzie, idle N1 is 63%, flight idle N1 is 67%.