FIGURE A- 3 



VP-3 



NEGATIVE INITIAL GRADIENT 





























































s 



















































































5 





























































































f 













































£000 















































J 



































































































































































































































































































































4000 







** 



























































































( 





























































































\ 



\ 





























































































\ 



s 





















































































6000 









V 



\ 













































































1 



























































































1 

































































































1— 



LU 



|_jj 8000 























































































































































































U_ 















































































1 













-z. 

































































































1 





















































































100OO 





























































































Q_ 























































































































































































UJ 





























































































*— ' 1ZOO0 















































































































































































































































































































































































1*000 

















































































































































































































































































































































































I woo 



















































































































































































j 



























































































































































































leooo 





























































































4.000) 



no 



*0. 









4 



.9 



20 



no 



*o: 









t 



.9 



60 



ID 



*d: 











.0 



00 



10 



+d: 









! 



.0 



40 



so 



*d; 









! 



.0 



SO 



tie 



♦o: 









SOUND VELOCITY - FEET/S 



A-6 



