Smithsonian Institution ______________________ Asset Name: media:NASM-A20170085000cp01 File Usage: Not determined There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page at https://www.si.edu/Termsofuse ______________________ Object details: Object Name: Slide Rule, Space Vehicle Pocket Designer Smithsonian Record ID: edanmdm:nasm_A20170085000 Object Name Slide Rule, Space Vehicle Pocket Designer Metadata Usage Not determined Guid http://n2t.net/ark:/65665/nv90e412136-393e-4c55-a788-d07a0ac117a4 Data Source National Air and Space Museum Manufacturer Martin Denver Materials Plastic. Cardboard case. Dimensions 2-D - Unframed (H x W): 11.4cm (4 1/2 in.) Summary This circular slide rule gave approximate information on the design of deep space missions, showing the relationship among parameters such as payload weight, propellant weight, final spacecraft velocity, exhaust velocity, etc. It would not have been accurate enough for an engineer to use in planning a mission; they used detailed mathematical formulas, evaluated by digital computers. But the slide rule would have been very useful for managers, members of the trade press, news media, and government funding agencies, who needed to know the basics of a space mission. Country of Origin United States of America Credit Line Gift of Martin Corporation, Denver Division Inventory Number A20170085000 Type INSTRUMENTS-Computers, General Purpose ______________________