Multi-Mode Receiver (MMR), LAAS Cert., Collins GLU-925 Global Landing Unit
date: label: Date
content: 2004-2005
name: label: Manufacturer
content: Rockwell-Collins (Iowa)
notes: label: Physical Description
content: Black box flight test unit used in certification trials
label: Summary
content: The GLU-925 Multi-Mode Receiver (MMR) is the first certified example of an integrated navigational system that incorporates signals from multiple types of navigational and landing systems, including GPS [WAAS and LAAS], GNSS, VOR, MLS, ILS, and integrating them into a single presentation and using the combination of signals to verify the accuracy of others. This allows an air-transport aircraft to use the most adventageous form of navigation, without having to add additional equipment, regardless of where they are in the world. Different nationalities often favor different technologies, sometimes for purely political reasons. The GLU-925 marks the first time that a navigational set has been certified for LAAS capability. LAAS utilizes a GPS differential to provide precision vertical azimuth guidance during landing. This allows air-tranpsort aircraft to make "Cat III" type blind landings with significantly less infrastructure than previous ILS-based procedures. This system will allow much lower landing minimums at a far greater number of airports and will improve the the efficiency of air traffic networks.
place: label: Country of Origin
content: United States of America
setName: label: See more items in
content: National Air and Space Museum Collection
label: Location
content: National Air and Space Museum in Washington, DC
label: Exhibition
content: One World Connected
creditLine: label: Credit Line
content: Gift of Rockwell-Collins
dataSource: label: Data Source
content: National Air and Space Museum
identifier: label: Inventory Number
content: A20060148000
objectType: label: Type
content: AVIONICS-Electronic/Satellite Navigation
objectRights: label: Restrictions & Rights
content: CC0
physicalDescription: label: Materials
content: Non-Magnetic White Metal
label: Materials
content: Paint
label: Materials
content: Ink
label: Materials
content: Adhesive Stickers
label: Dimensions
content: 3-D: 37.5 × 20 × 9.2cm (1 ft. 2 3/4 in. × 7 7/8 in. × 3 5/8 in.)