Moderators: richierich, ua900, PanAm_DC10, hOMSaR
Quote: Looking at the 360 view, it looks like the A350 will have a pretty roomy flight deck or are my eyes being deceived? |
Quoting HA_DC9 (Reply 4): Looking at the 360 view, it looks like the A350 will have a pretty roomy flight deck or are my eyes being deceived? |
Quoting petera380 (Reply 6): Where is the Ctrl Alt Del button? |
Quoting autothrust (Reply 13): How does it come the A350 need all this switches for computer reset while the 787 just two buttons? |
Quoting BoeEngr (Reply 12): I'd be surprised to see them step away from the blue. |
Quoting autothrust (Reply 13): How does it come the A350 need all this switches for computer reset while the 787 just two buttons? |
Quoting kanban (Reply 17): |
Quoting CM (Reply 18): I expect the A350 has solid state power controllers |
Quoting CM (Reply 16): Brown just looks "low-tech" |
Quoting CM (Reply 16): resetting certain functions for reasons of procedural commonality wtih other Airbus types. |
Quoting columba (Reply 20): ....and the 787 runs on Mac/OS |
Quoting KarelXWB (Reply 21): Libya's Afriqiyah to convert its A350-800 order into -900s and increase the order by four. |
Quoting ferpe (Reply 23): Actually it seems the A380, 787 and A350 all use a common module approach called IMA |
Quote: An obvious question is how Airbus's implementation of IMA compares with the 787's "common-core" approach? While both incarnations use an Ethernet network and adopt the general concept of "shared resources"--i.e., both aircraft have applications for specific LRUs and individual computers for affiliated systems--the 787's "central nervous system" houses the core processors that communicate with local data concentrators distributed throughout the aircraft. The A350's system is similar but uses multiple computers of a common design with function-specific input/output interfaces. These computers are referred to as "core processing input/output modules" and are allied to particular systems via the AFDX network. |
Quoting ferpe (Reply 23): it seems the A380, 787 and A350 all use a common module in a layered approach called IMA (Integrated Modular Avionics) |
Quoting autothrust (Reply 22): Quoting CM (Reply 16): resetting certain functions for reasons of procedural commonality wtih other Airbus types. That would make sense, |
Quoting airmagnac (Reply 26): ach CPIOM is a single computer (contains I/O boards, processor(s), |
Quote: The number of functions hosted by the CPIOM has been increased by more than 50% compared to the A380. For example, the 'doors and slides control' function which was previously handled by a specific computer is now hosted by the standard CPIOM. In addition, the processing power of the CPIOM has been doubled, its reliability increased and weight reduced." |
Quoting CM (Reply 18): One thing that is intriguing... I expect the A350 has solid state power controllers (electronic circuit breakers), like the A380 and 787. If it does, it's even more curious why this set of breakers remains as push/pull thermal breakers. |
Quoting airmagnac (Reply 26): I'm less familiar with the Boeing choice, so I'll rely on CM or Tom to correct me. But from the above I'm guessing they use a "cabinet" with a single power supply (hence only one reset button) and a single network interface, probably some shared computing and memory resources. Then you come and plug in some kind of memory drive containing the stuff specific to each aircraft function. |
Quoting ferpe (Reply 23): Then for networking they use a airborne version of Ethernet, AFDX. |
Quoting tdscanuck (Reply 29): You need to have at least the basic CB's to supply the computers as conventional thermals (or other mechanical breakers) so that you can power up the computer to command the solid state power controllers. |
Quoting tdscanuck (Reply 29): I'm curious if the A350 ones are actually physical CBs, or only form/fit/function identical and actually commanding solid state power controllers |
Quoting CM (Reply 30): Of roughly 1400 circuits on the 787, 1100 are solid state and controlled in CBIC |
Quote: Incorporates advanced programmable Solid State Power Control (SSPC) devices in place of mechanical circuit breaker and relay technology, the SEPDS architecture was specially designed for the A380 |
Quoting petera380 (Reply 6): Where is the Ctrl Alt Del button? |
Quoting autothrust (Reply 13): How does it come the A350 need all this switches for computer reset while the 787 just two buttons? |
Quoting CM (Reply 16): I think those 24 "switches" on each A350 COMPUTER RESET panel are actually circuit breakers. |
Quoting ferpe (Reply 23): Actually it seems the A380, 787 and A350 all use a common module approach called IMA (Integrated Modular Avionics) with applications running on a well defined API (ARINC 653) which creates the interface to an underlying real time operating systems (RTOS). Seems to be the usual RTOS players which are active: |
Quoting airmagnac (Reply 27): The A380 also has CBs in the cockpit, and both A380 and A350 have other physical CBs in the avionics compartments. The ones in the cockpit being referred to as "Reset" switches, I'm guessing they are low power connections to calcualtors, and that a tradeoff study showed that it was better for these to remain mechanical rather than solid-state. |
Quoting tdscanuck (Reply 29): I'm curious if the A350 ones are actually physical CB's or only form/fit/function identical and actually commanding solid state power controllers. |
Quoting autothrust (Reply 34): Quoting zeke (Reply 33): The computer resets reset individual computers, in many cases there are duplicate or triplicate computers I'ts more a flexiblily thing over simplicity? (compared to the 787) |
Quoting zeke (Reply 33): If for example the lights in the cabin are playing up, they crew can reset the CIDS computer, it will go through the normal start up, and return the lighting to normal. |
Quoting tdscanuck (Reply 35): If you reset the CCR's you reset nearly everything. |
Quoting travelavnut (Reply 36): Or am I missing something and is it for example possible to reset that particular subsystem through the software? |
Quoting travelavnut (Reply 36): Or am I missing something and is it for example possible to reset that particular subsystem through the software? |
Quoting travelavnut (Reply 36): Also what about risk, I can imagine the robustness of the CCR's should be on par with critical flight systems? |
Quoting travelavnut (Reply 36): Speaking of flight systems; are the 787 flight control systems located in the CCR's or are these still dependant on dedicated hardware? |
Quoting travelavnut (Reply 36): I really get the idea of the virtualization in flight software, it feels like common sense to use standard hardware on the lower levels and elevate a lot of functionality to the software level. But the same common sense tells me you increase the amount of possible failure modes (memory leaks, other bugs, etc). Is my gut-feeling correct? |
Quoting travelavnut (Reply 36): And if so; how does this affect certification? |
Quote: The static aircraft, which will be used solely for ground tests, has nearly completed assembly, with a full fuselage, two wings and the vertical tail plane joined. The aircraft will be transferred to the static test hangar at the Toulouse Jean-Luc Lagardère site to be prepared for static tests to start in spring 2013. |
Quoting ferpe (Reply 45): Now why those red covers on the MLG and part of the NLG? |
Quoting ferpe (Reply 45): Now why those red covers on the MLG and part of the NLG? |