Originally Posted by
Carl Spackler
The loss of a vertical stabilizer alone does not make an aircraft crash. Jack Northrop's flying wing from the 1940's is proof that you don't need a vertical fin.
It was probably a chain of presently unknown events that led to the inflight break up of the aircraft.
Carl
Carl, your profile shows you as a 747-400 Capt - does your 747 suddenly grow split ailerons, differential thrust (differential at a rate faster than you can reliably control or faster than the engines can usually spin up), differential ailerons, or any other alternate means of controlling yaw?
The flying wing as well as the current B-2 don't have NO yaw control, they have alternate means of yaw control. As a matter of fact, with no vert stab or means of yaw control, the simple movement of the ailerons and their subsequent adverse yaw are likely to start a catastrophic sequence of aircraft movements - especially in turbulent conditions.
For what it is worth, the B-52 did not lose its ENTIRE vert stab, just most of it - there was still some structure remaining providing some level of stability. The B-52 outboard engines are also far away from the fuselage, giving them a little more usefulness as yaw control with smaller throttle movements (the motors were also not the high-bypass fan motors of today and the thrust response at high RPM's was a little quicker). I doubt that the engines alone would have been sufficient had no vert stab remained.
The last civilian aircraft that lost the vert stab (prior to the AA accident in 2001) was a 747 that crashed in Tokyo. The aircraft was able to fly for a while, but was never in control enough to return for landing.