Schreibev 3 Bentkowsky and Kerr 



DSRV is approximately 20 feet above the deck of the DISSUB, and 

 ends when the DSRV is sitting on the deck and has positioned itself 

 to the accuracy required to assure a satisfactory seal. This simu- 

 lation would be used to determine the limits of current magnitude 

 and direction and distressed submarine attitude for which manual 

 control is feasible. Mating aids would be used as required. 



The manned simulation program was undertaken sufficiently 

 early in the design program to permit some design investigation of 

 the parameters of various control elements. Several significant 

 design changes were made as a result of these investigations. 



This computerized simulation program complemented the 

 simulations undertaken with the LASS (Lighter than Air Submarine 

 Simulator) vehicle. LASS operations (Ref. 14) had established the 

 feasibility of manual control. However, they did not permit con- 

 trolled variation of the environment. 



The facility used for the manned simulation program was 

 located at the Sperry Marine Systems Division in Charlottesville, 

 Virginia, This facility had previously been used for simulation 

 studies of the NR-i research subnmerslble , and many of the programs 

 developed for the NR-1 were available for the DSRV studies, 

 Ron Rau, one of Lockheed's DSRV test pilots, served as test pilot 

 for the simulation study, 



FACILITY DESCRIPTION 



The computer facility utilized in the simulation comiblned 

 an Ambilog 200 hybrid computer with an EAl-23iR analog computer. 

 The Ambilog 200 has a basic 4,096-30 bit word memory with a 

 memory cycle of 2 jjLsec, The analog portion, used for multiplication 

 and division, has a 50 |jLsec cycle. The Ambilog 200 was used to 

 simulate the vehicle, coordinate transformations, actuators and 

 effectors, current interaction effects and the mating aids. The 

 EAI-231R was used for display generation and for simulating the 

 ballast and trim systems. 



In addition to the computer, the simulation facility Included 

 a cab driven in two degrees of freedom (roll and pitch). The cab 

 contained a control station consisting of control sticks and other 

 system inputs, various meter type displays, and a TV display. 

 Figures 25 and 26 show the cab and its interior display arrangement, 

 respectively. 



1166 



