Engine failure in multi

[sstearns2]

.....

All engine out training in twins should be done with a piece of string taped to the center of the windshield.

The best way to look at this is to draw a basic top view of a conventional twin and draw the forces on it. Good engine thrust, airframe drag at the CG, and the force being generated by the vertical tail. Study this picture and you'll see that your flying sideways if you don't have any lift from the wing projected to oppose the force from the vertical tail.

The ball is centered if your wings level and your heading isn't changing. The ball just happens to have a close relationship to angle of sideslip in a centerline thrust airplane.

Scott

 

[DoinTime]

The inclinometer is in no way "calibrated." The closest that may be said an inclinometer comes to calibration is ensuring that the ball sits in the center when the wings are level on the ground, and that's a maintenance function of installing the instrument properly. Otherwise, there is no "calibration."

AVBUG...You contradict yourself here. Ensuring that an instrument that relies on being properly installed to give the desired results is in every way "calibrated." If it did not need to be "calibrated" you could bolt it on in any old way and get the desired effect.

Typically in large turbojet aircraft, the ball, when available (not found in all aircraft) is kept centered

What aircraft do not have a ball? or a digital representation of a ball (as in a glass cockpit)? A slip/skid indicator is required for IFR ops you know. 91.205.d.4

 

[avbug]

There is no calibration standard for an inclinometer. How many pounds of force, degrees of sideslip, g loadings, degrees of bank, or other measurement is given by ball displacement? Simply because an inclinometer ball rests at the low part of the glass at rest on the ground, doesn't make it calibrated. The inclinometer isn't calibrated. Ensuring that the item is properly installed isn't calibrating it. No mechanic calibrates an inclinometer. You won't find instructions or standards anywhere for calibrating an inclinometer. No manufacturer has standards or instructions for continued airworthiness for inclinometer calibration. Sticking it on the panel so it's straight is NOT calibration.

Not all large airplanes fly IFR, and not all large airplanes, or small ones for that matter, are bound by the minimum instrumentation spelled out in the FAR. Think about it.