2017年11月1日 · The ADMs can be mounted near the pitot and static sources significantly reducing the plumbing. The ADM converts the pressures to digital signals passed to the ADIRU via ARINC 429 or similar data bus. This simplifies installation, maintenance, and weighs less. It should be noted that newer aircraft are moving to even newer architectures.

2024年7月13日 · The air data computer is not synonymous with ADIRU, but it is one of the two components of the ADIRU: The aircraft is fitted with two (left and right) ADIRUs which are powered from the AC electrical busses. Each ADIRU includes an IRS and an air data computer which receives information from separate pitot static sources. The air data part of the ...

2020年12月8日 · ADMs - Air Data Modules, units which compute the physical data of the probes into numerical information; and then feed that into the Air Data Reference unit of the ADIRU for processing CDUs - Control/Display Units, which use the data processed by the Air Data Reference unit, to display it on the EFIS (or present it to the pilot on the CDU’s ...

2019年11月15日 · The ADIRU by itself is a fault tolerance unit - within this unit, there are multiple gyroscopes and accelerometers. In the past, when multiple redundant units are provided to the pilots, there were instances where the pilots had trouble identifying the malfunctioning unit or switched to the wrong unit , and the plane crashed.

2020年4月20日 · A problem with ADIRU 1 resulted in a loss of the GPWS function. [ATSB Transport Safety Report AO-2008-070 , page 48 (page 68 of the PDF file of the report).] In addition to the potential for a pitch-down command, other known effects associated with the data-spike failure mode on the A330/A340 included:

2024年2月6日 · By the way, ADIRUs can initialise just fine if the ground is slanted (and it often is). Similarly, it is also fine if the aircraft is tilted in any direction relative to the ground (depending on the cargo/fuel loading). What I am talking about is strictly the physical alignment of the ADIRU relative to the aircraft axes.

2021年4月4日 · SOP is modified to introduce a new condition to perform a complete IRS alignment during cockpit preparation. When departure airport is located between latitudes 2° north and 2° south, a full alignment must be done. This is to avoid excessive drift of Honeywell ADIRU Block III during the subsequent flight.

2024年3月16日 · Each ADIRU is divided in two parts, either of which can work separately in case of failure in the other. ADR 1 failure. The list of inoperative systems when ADR1 fails are: ADR 1; CAT 3 DUAL; GPWS; So, ADR1 obviously, you can't use the CAT 3 autopilot landing, and GPWS is not working. There will be also several automatic "invisible" switches.

2018年1月31日 · The ADIRU by itself is a fault tolerance unit - within this unit, there are multiple gyroscopes and accelerometers. In the past, when multiple redundant units are provided to the pilots, there were instances where the pilots had trouble identifying the malfunctioning unit or switched to the wrong unit , and the plane crashed.

2022年4月4日 · The ground proximity warning system (GPWS) uses the radio altimeter to receive information about the distance from the ground. Does the GPWS system work solely based on the information it receives ...