Skip to main content Skip to main navigation
heart-solid My Visit Donate
Home Smithsonian Institution IK development site for ODI
Press Enter to activate a submenu, down arrow to access the items and Escape to close the submenu.
    • Overview
    • Museums and Zoo
    • Entry and Guidelines
    • Museum Maps
    • Dine and Shop
    • Accessibility
    • Visiting with Kids
    • Group Visits
    • Overview
    • Exhibitions
    • Online Events
    • All Events
    • IMAX & Planetarium
    • Overview
    • Topics
    • Collections
    • Research Resources
    • Stories
    • Podcasts
    • Overview
    • For Caregivers
    • For Educators
    • For Students
    • For Academics
    • For Lifelong Learners
    • Overview
    • Become a Member
    • Renew Membership
    • Make a Gift
    • Volunteer
    • Overview
    • Our Organization
    • Our Leadership
    • Reports and Plans
    • Newsdesk
heart-solid My Visit Donate

Sextant Controller, Inertial Measurement Unit, Apollo Guidance/Navigation System

Air and Space Museum

There are restrictions for re-using this image. For more information, visit the Smithsonian's Terms of Use page .
International media Interoperability Framework
IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more.
View manifest View in Mirador Viewer

Object Details

Manufacturer

Kollsman Instrument Company

Summary

The Apollo spacecraft contained a separate inertial guidance and navigation system that enabled its crew to navigate from Earth orbit to the Moon and back. It consisted of three principal parts. One was an inertial measurement unit (IMU), which contained gryoscopes and accelerometers that established a base position and attitude for the craft. The second was an optical unit, which allowed the astronauts to update the IMU's settings based on sightings of stars and planets. The third was a digital computer.
This artifact is part of the Command Module's IMU. It is probably unflown but othewise identical to those used on Apollo missions.
NASA transferred this object to the Museum in 2001.

Credit Line

Transferred from the National Aeronautics and Space Administration

Inventory Number

A20010305003

Restrictions & Rights

Usage conditions apply

Type

SPACECRAFT-Crewed-Guidance & Control

Materials

Aluminum
Synthetic
Glass
Copper Alloy
Coating
Unknown Plating
Textile

Dimensions

3-D (Controller): 10.8 × 15.2 × 24.4cm (4 1/4 × 6 × 9 5/8 in.)
3-D (Loose Screws): 1.6 × 0.8 × 0.8cm (5/8 × 5/16 × 5/16 in.)

Country of Origin

United States of America

See more items in

National Air and Space Museum Collection

Data Source

National Air and Space Museum

Metadata Usage

Not determined

Link to Original Record

http://n2t.net/ark:/65665/nv96946c076-0a25-4fc7-bbcd-894e24a22cd7

Record ID

nasm_A20010305003

Discover More

Image of Saturn 5 guidance and control ring

Guidance, Navigation, and Control

Image of Saturn 5 guidance and control ring

Guidance, Navigation, and Control

arrow-up Back to top
Home
  • Facebook facebook
  • Instagram instagram
  • LinkedIn linkedin
  • YouTube youtube

  • Contact Us
  • Get Involved
  • Shop Online
  • Job Opportunities
  • Equal Opportunity
  • Inspector General
  • Records Requests
  • Accessibility
  • Host Your Event
  • Press Room
  • Privacy
  • Terms of Use