Mad Flight Scientist, the purpose of any side slip is not to give maximum rate of descent, it is merely used to increase ROD while limiting airspeed, and in a variety of types it aids forward view. With the greatest of respect therefore, I suggest that your scenario of an emergency descent is an unlikely use of the manouvre.
Pugulistic: With even GREATER respect to you, and the GREATEST of respect to Mad Flt Scientist (WHO I KNOW, KNOWS HIS STUFF), I suggest you, MAY have missed the point I was trying to make......
that being that the side slip manouvre would be of little use in the scenario of an emergency descent.
He (and you) should know that side slip manouvre would rank among one of the most
USELESS manouvres to consider if the MOST rapid rate of descent was needed. This was the ONLY point I was trying to make - nothing more - nothing less, and certainly nothing that requires complex thinking.
If he (MFS) thought that rapid rate of descent was derived from side slipping, then he was WRONG, but I don't think he wad suggesting that!