Murthy 



important as far as the motions are concerned. So one has to look a 

 bit more deeply into the actual pressure distribution in the cushion 

 and we can, it appears, have a tailormade cushion for each job we 

 have in mind, whether we want a cargo ACV or a very fast ACV. It 

 depends on the role the craft has to play and you can design a suitable 

 distribution of pressure. As to how it is done, you can accentuate the 

 entrance entrainment of the air from the atmosphere and produce a 

 non-uniform cushion of a suitable shape for the role the vehicle has to 

 play in actual operation. 



The last point raised was whether a numerical computation 

 was made. That was meant as my third apology when I started. No 

 results are given here. The work was done purely as a private ven- 

 ture. It was not sponsored by any Government or any agency. Calcu- 

 lations involve the use of a computer, which costs money. But the ex- 

 pressions are available here and can be applied to any specific confi- 

 guration, and quite realistic results can be obtained. I am also con- 

 sidering the feasibility of applying the finite element method which 

 may be the only answer to problems of this kind, because some of 

 these integral equations are singular and there may not be any easy 

 way of solving them without the use of the FEM technique. This I am 

 studying now. So, once again, I am sorry I have no results here be- 

 cause results cost money, but they can be obtained probably at some 

 later stage. 



256 



