Gopal From United States of America, joined Jun 1999, 113 posts, RR: 0 Posted (10 years 1 month 1 week 1 day 5 hours ago) and read 1484 times:
Which company provides INS systems for Boeing airliners such as 777 and 747 ? I was reading that the modern INS systems have sophisticated electronic logic built into them. The heart of this logic is usually a microprocessor/microcontroller of the same capability at a Intel 80486 processor. Is there an airliner "BUS" on which hooks the INS with other logical components to the flight computer ? Many thanks for the answers
B747FE From Hong Kong, joined Jun 2004, 230 posts, RR: 4
Reply 1, posted (10 years 1 month 1 week 7 hours ago) and read 1138 times:
Quoting Gopal (Thread starter): Which company provides INS systems for Boeing airliners such as 777 and 747 ?
The INS for the 747 classic are manufactured by Marconi, Litton (LTN-92), Delco Electronics (Carrousel IV).
744 and 777 are most probably equipped with IRS. Honeywell and Sextant Avionique are other vendors for those systems.
Quoting Gopal (Thread starter): Is there an airliner "BUS" on which hooks the INS with other logical components to the flight computer ?
Yes, the FMS, using ADIRU's (Air Data + Inertial Reference Unit), GPS, VOR and DME receivers, is integrated to send and receive signals/imputs to other aircraft systems, such as DADC, weather radar, GPWS, FADEC, FDR.
This is accomplished through avionics communication buses.
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