Naval Airship Program for Sizing and Performance (NAPSAP), Computer Program Development: Program Update Number 2
1982
Lancaster, Jon W.
A computer program called NAPSAP, for Naval Airship Program for Sizing and Performance, performs preliminary vehicle design and performance evaluations for both rigid and non-rigid Lighter Than Air (LTA) vehicles. Program capabilities have been tailored to vehicle sizes and missions currently being investigated as part of the joint U.S. Navy - U.S. Coast Guard Maritime Patrol Airship, MPAS, Program and U.S. Navy Operational Mission Applications. The program has been designed to operate on a minimum of input data (only five cards are necessary) but has the capability to examine the influence of some 40 key parameters. Once the design section of NAPSAP converges on a vehicle which meets the input requirements (such as maximum speed, payload, enduracne, etc.) this vehicle can then be operated against a specified mission profile. Program developments include the addition of more detailed static aerodynamic coefficients, configuration/geometry details, static weight and balance calculations and the capability to analyze mission performance in towing operations in considerable detail. In its present form core memory size is 150K octal words on CD 6600 or 600 K bytes on IBM equipment. Normal run time is less than 4.0 CPU seconds.
Show more [+] Less [-]Supplement to Rept. nos. NADC-79206-60 dated Jan 1980 and NADC-80075-60 dated Sep 1981. Sponsored in part by Contracts N62269-78-M-4462 and N62269-79-M-2870.
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