Originally Posted by Brian Carlton

As you know, I rule nothing out.

However, a low powered and relatively heavy aircraft can't maintain much of a climb angle with respect to the ground. It certainly can maintain an angle of attack near it's stall limit, but this would be something like 15 degrees, max.

The time at the angle is not relevant. All it needs is one second at a sufficient angle to break the friction of the track. Then the bulldozer's weight will keep it rolling, with any angle on the aircraft whatsoever.

Of course, the pilot can create sufficient angle to break the machine loose. He just could not hold this angle due to decreasing airspeed.

One other point of doubt: Wouldn't the bulldozer be in gear as a matter of principle? If so, it would be effectively impossible to get it to roll and rotate the engine.