Questions tagged [aircraft-subsystem]

Aircraft subsystem is a sub domain of the whole aircraft. Any system of the aircraft which helps the aircraft to be airborne (and fly safely) is called an Aircraft subsystem.

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6 votes
3 answers

Why are ARINC labels are transmitted LSB first?

Why are ARINC labels reversed before transmitting them to destination and the LSB (less significant bit) is transmitted first: Actual label = 0x58: 0101 1000 ...
8 votes
2 answers

Which part of aircraft is contributing the most weight of airplane?

Which part of the aircraft contributes the highest portion of weight? Note: we had argument that, wires connecting the avionics systems are the major contributors of aircraft weight. Due to some ...
4 votes
2 answers

What is an example of a system like MCAS?

The related question "Is it common for automated control systems to use non-redundant sensors?" does not ask about a specific example, nor are specific examples provided in the answer. The criteria ...
23 votes
2 answers

How can a pitot tube freeze when it's heated?

Reading Why turn off pitot tube heating?, it appears that the pitot tube heat can be switched off to extent its lifetime and also in case of short-circuit. (Thales pitot-static probe, source BEA) On ...
6 votes
1 answer

What is an Enhanced surveillance system?

What is the purpose of enhanced surveillance system and what are the benefits of installing it? And what information is available from this system?
6 votes
2 answers

Is wheel well overheat detection (not brake temperature sensor) necessary for commercial jet aircraft?

Some aircraft do have this detection system (many Boeing aircraft), some do not. Why? What's the main purpose of the wheel well temperature detection system, even though there are brake temperature ...
17 votes
1 answer

Why is fuel used as a hydraulic fluid?

Why is fuel used in some servo-systems as a hydraulic fluid (fueldraulic systems) of modern civil and military aircraft such as the Boeing 777-200/-300 (Pratt & Whitney PW4084) or the Lockheed ...
4 votes
1 answer

Is the Dassault "ministop" related to the Dunlop Maxaret ABS?

Dassault fighters e.g. Ourargan and Mystere had Anti-lock devices called "Ministop" on main landing gear brakes. Anybody has a picture / drawing / detailed description ? Is the Ministop related to the ...
6 votes
2 answers

What's the minimum timeline for fixing the issues/finding from NTSB/FAR?

When air-crash investigation completes, either NTSB/FAR/other investigating agency finds some issue with instruments/equipments. What is the minimum timeline given to instrument/equipment manufacturer ...
6 votes
2 answers

What is the different between an aircraft engine gearbox and an aircraft engine transmission?

For an aircraft engine, what is the difference between a gearbox and a transmission? I was of the understanding that a transmission is a type of gearbox. For example, in a helicopter, a transmission ...
1 vote
3 answers

Do modern aircrafts like 747/787/A320/A380 have some Plug and Play subsystems/sensors?

Do modern passenger aircafts like 747/787/A320/A380 have some sub-system or sensors which are plug and play that might include some kind of sensors or radars which comes as optional and can be used ...