World Library  
Flag as Inappropriate
Email this Article

Courier 1B

Article Id: WHEBN0000949654
Reproduction Date:

Title: Courier 1B  
Author: World Heritage Encyclopedia
Language: English
Subject: Courier (disambiguation), Communications satellite, Deal Test Site, Fax, October 1960
Collection: Communications Satellites in Low Earth Orbit, Spacecraft Launched in 1960
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Courier 1B

Courier 1B
Courier 1 satellite
Mission type Communication
Operator United States Air Force
Mission duration 17 days (achieved)
Spacecraft properties
Launch mass 230 kilograms (510 lb)
Start of mission
Launch date 4 October 1960, 17:50 (1960-10-04T17:50Z) UTC
Rocket Thor DM-21 Ablestar
Launch site Cape Canaveral LC-17B
Orbital parameters
Reference system Geocentric
Regime Low Earth
Eccentricity 0.02001
Perigee 938 kilometres (583 mi)
Apogee 1,237 kilometres (769 mi)
Inclination 28.33 degrees
Period 106.8 minutes

Courier 1B was the world's first active repeater satellite after launch on 4 October 1960. Courier was built by the Palo Alto, California–based Western Development Labs (WDL) division of Philco, previously known as Army Fort Monmouth Laboratories and now the Space Systems/Loral division of Loral Space & Communications.

Proposed by the U.S. Army Signal Corps in September 1958, Courier was a follow-on to Project SCORE launched in 1958. The first satellite in the series, Courier 1A, was lost in a launch failure 2.5 minutes after liftoff. Courier used approximately 19,000 solar cells and was the first satellite to use nickel–cadmium storage batteries. It had an effective message transmission rate of 55,000 bits per second.

After completing its first orbit, a message from US President Dwight Eisenhower to the United Nations was transmitted from the Deal Test Site, an off-base transmission facility of Fort Monmouth, New Jersey and relayed to a ground station in Puerto Rico.

After 228 orbits in 17 days, the payload failed to respond to commands from the ground. It was believed that the clock-based access codes got out of synchronization and the satellite would not respond to what it interpreted as unauthorized commands.

See also

External links

  • Information on Courier 1A and 1B at Gunter's Space Page
  • Courier 1B history at CampEvans.org (Home of InfoAge.
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 



Copyright © World Library Foundation. All rights reserved. eBooks from World Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.