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Questions tagged [aircraft-systems]

The essential systems found on most aircraft, including including power plants, fuel systems, electrical systems, and flight instruments.

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81 views

Where can I find drawings or diagrams of the Boeing 737-800's internal layout? [on hold]

I am working on an alternative fuel system for my final school research. I am applying it to the 737-800. Now I could not find info on how the internals are situated. Of course pictures of the cabin ...
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21 views

Is there any resources available on Aircraft HardTime / On condition component? [on hold]

Is there any Powerpoint presentation of Aircraft HardTime Component / On condition component available for training purpose.
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1answer
85 views

Why were these crash location not located via ELT?

On Jan 14th 2019, at 9.10 Indonesia time, the CVR of the crashed Lion Air JT-610 has been found. Another vital device was found earlier. There are three modern airplanes crashed in to water in ...
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43 views

Difference between FMCF and AIMS on B777?

What is the Difference between Flight Management Computing Function and Airplane Information Management System on B777?
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110 views

In an airplane wing, which one is primary, and which one is secondary

I got this device detail of a wing. Those parts are: 1: wingtip fence, one of the wingtip device beside winglet. 2 & 3: aileron. 4: flap track. 5 & 6: slat. 7 & 8: flap. 9 & 10: ...
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2answers
86 views

Electrical systems in light aircraft

How does the electrical system in a light aircraft such as a Zenith CH-750 or Cessna 150 work compared with electrical systems in larger aircraft? Are the system is different than the electrical ...
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0answers
117 views

Using the APU for heating on the ground with engines shut down

I would like to refer one technical question to you that I couldn’t able to explain myself. It is from the FCOM Supplementary Procedures Chapter of a Boeing 737 Classic. This question concerns the use ...
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0answers
50 views

How does pendulous vane work?

The pendulous vane uses precession to correct a gyro by small jet air, but I do not know how it works. As far as I study, when gyro is tiled, one of the doors open and the other one is closed. This ...
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38 views

Hardware evaluation board for safety critical avionics software (especially Guidance and Autopilot)

Can anyone provide me examples of evaluation boards for prototype testing of guidance software including autopilot. I am looking for boards that are proven, stable and successful with support for any ...
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1answer
133 views

What is the exact purpose of the string attached between front fuselage & the tail section of the transport aircraft's? [duplicate]

]2 228]3]3 Usually I got to notice a string attached between front fuselage to rear tail section of the transport aircraft's, what exactly might be the purpose or function of it? But comparatively, I ...
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3answers
148 views

Is the purpose of variable pitch propellers to maintain an optimal angle of attack?

I recently had a discussion with an aviation expert, who works as a Flight Instructor, about constant speed propellers - variable pitch propellers - on light piston aircraft. I have always known that ...
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1answer
198 views

Why does Germany is not so advance in aircraft development? [closed]

I tried to see what countries are the most advance in developing aircraft. I found that Germany is not so advanced (CMMIW). Indeed, there is Dornier there beside has share in AirBus. I don't know ...
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1answer
203 views

Why do the A320's centre tank pumps stop working 5 minutes after the low level has been reached?

I'm new here and I'm in training course for Airbus A320. In the training material, it's said that the centre tank pumps are controlled to stop automatically 5 mins after the low level fuel has been ...
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1answer
677 views

What is the difference between redundancy and fault tolerance?

What is the difference between redundancy and fault tolerance in the context of aviation ?
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3answers
101 views

Can someone explain this glideslope question?

The glideslope deviation bar is covering the second upper dot. The required action to meet glideslope beam is to: What does this question mean?
2
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1answer
71 views

What are the potential threats of having the landing gear dirt from mud in a rectractable landing gear airplane?

Recently I have been flying an aircraft with the landing gear very dirt with mud due to the parking area of the airfield on grass and the meteo conditions in recent days. I wonder what are the threats ...
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1answer
66 views

TCAS II manoeuvres? [duplicate]

What manoeuvres does the TCAS II advise the pilot to make? Is it RA or TA ?
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42 views

How to compute actuator torque requirement for Variable pitch mechanism??

Suggest me any reference to compute the torque requirement for actuator/motor to control the pitch angle of propeller (Variable Pitch Propeller). Thanks in advance Arun Ravindran
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1answer
132 views

What is the material and font used on the panels of most cockpits?

I am working on a project for one of my aerospace engineering classes and was curious to see if anyone knew what type of material is used to make the panels of a cockpit (preferably a 737) as well as ...
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2answers
108 views

General Aviation Ice Protection

Does anyone know if regulation exists making it a requirement for general aviation aircraft to have ice protection systems? And any insights on why general aviation aircraft tend to use rubber boots ...
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1answer
246 views

What are those sensors on the forward (Airbus) A321neo fuselage?

What are those sensors on the forward (Airbus) A321Neo fuselage? If it helps, this is wow air’s TF-DTR.
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1answer
150 views

How was a looping possible with an Alaska Airlines plane? [duplicate]

Someone has stolen an empty airplane from Seattle Airport and crashed it down after performing some loopings. I am wondering how this was possible. (Source)
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2answers
148 views

Does the 2020 ADS-B -Out requirement apply to aircraft with only a wind-driven generator (electrical system)?

Since my J3 Cub was was not originally certificated with an engine-driven electrical system it's clear the 2020 ADS-B-Out mandate (U.S.) does not apply (except where specifically noted in FAR part 91)....
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30 views

Aircraft EFIS Configurability [duplicate]

What should be the general logic to automatically switch between different pages of EFIS during failure of single or multiple displays?
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3answers
289 views

Why does load shedding still occur in jetliners (e.g., 787) when there is so much power available?

I had a few questions about how electrical generator works on an aircraft, the 787 to be specific although I know it is similar for all aircraft. So the 787 engines have 2 VFSG each which are rated ...
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1answer
81 views

Lift and Drag Coefficients using load cell data

I have a MAV and I need to find out the lift and drag coefficients for the wing and tail. I am not available with a wind tunnel so I will be using a load cell along with a separate wind source. Now I ...
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61 views
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80 views

What is the difference between an Instrument and Equipment?

In an aircraft, what things is an instrument and what things is an equipment? For example the ILS, is the Antennas located in the runway considered to be an instrument or an equipment? Or is there ...
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1answer
129 views

How do check valves regulate the air in a multi-engine airplane's vacuum system?

This is one of the examples of a pneumatic power system in a multi-engine airplane. In systems like this, if one dry air pump fails - let's say the right-hand one - then the check valve manifold ...
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1answer
98 views

What is the ambient temperature used in RTCA/DO 160?

I was going through RTCA/DO 160D for some work-related issue. I went through the whole document but nowhere does it define what the "ambient temperature" value is? In one place it defines +15 to +35 ...
6
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1answer
421 views

Are pressurized passenger aircraft usually completely airtight?

Various sources on the internet indicate that the passenger cabins on pressurised airplanes are not 100% airtight. I'm not talking about ventilation/pressure valves/cabin pressurisation system, but ...
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0answers
179 views

Will the new Boeing NMA be 'more electric' than the current B787?

I understand that the B787 is the 'most electric' aircraft to date, however there have been many issues with the plane, and I'm interested in knowing if the latest Boeing New Midsize Aircraft (NMA) - ...
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1answer
89 views

Why does an engine bleed system failure restrict operating elevation? [closed]

Why are airplanes not permitted to operate to/from airports at over 9,200 ft if Engine Bleed Air Supply System #2 is inoperative?
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2answers
249 views

Why is it necessary for pilots to have trim controls on fly-by-wire aircraft?

On Airbus family airliners why is it necessary for the pilots to have the facility to trim when there is no aerodynamic feedback through the flight controls?
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1answer
105 views

Is it possible to 'retrofit' electric flight control actuators to replace existing hydraulic actuators on aircraft?

Read a bit about the potential cost savings of replacing existing hydraulic aileron actuators on large commercial aircraft such as the A350/380 with electrohydraulic/electromechanical actuators. ...
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1answer
336 views

What is the overhead instrument panel (pictured) near the front galley area of an A320?

I have noticed this overhead instrument panel. It is convered by a transparent plastic lid with a small hole in the middle. Inside it has lot of switches. What is it supposed to do and who operates ...
4
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1answer
418 views

What is the fluid released from the tail of this clipped Turkish airliner?

A Turkish A321 airliner was hit by an Asiana A330 on 13 May 2018 at Istanbul Airport. It seems a large amount of fluid was released from the damaged section. What is the fluid? There is no APU up ...
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1answer
112 views

How to calculations deviation on a magnetic compass and effect of it?

I am told to do self study and mainly for the part of the formula reading and i did some research and don't understand a single thing that i read online http://opac.vimaru.edu.vn/edata/EBook/Magnetic%...
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2answers
436 views

What is the risk of leaving the MAN START PB 'ON' on the A320?

During a manual start on a A320, the ENG MAN START P/B opens the start valve which then runs the starter motor. During the MAN START process, at some point, the start valve closes automatically. What ...
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263 views

How does the Boeing 787's Cabin Air Compressor work? [closed]

How does it work in normal, overheat and over-pressure conditions? What is the function of the variable diffuser actuator?
5
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1answer
248 views

White light illuminating the engine coming on at intervals in flight; Curious what's the protocol?

I was recently flying Air China from Beijing to Bombay & happened to seat on the Window seat close to the wings. I could see the engines and there was a light that could illuminate the engines. ...
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2answers
243 views

Does the flight crew in big airliners hear the cabin crew PAs?

In big airliners, does the flight crew hear the PAs the cabin crew is doing to the passengers, e.g. on their headsets? If not, how do they make sure they’re not talking simultaneously to the ...
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2answers
142 views

What minimum radio communication equipment is required in a homebuilt aircraft in India?

Let's say I am building a single seat aircraft for flying in one's own country(India). What should be minimum set (Not only from compliance prospective but to have core set of communication for ...
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1answer
129 views

Does the parking brake provide additional deceleration in an abnormal situation?

During a rejected takeoff at a speed > V1, you obviously try to stop with all available means since a runway overrun is a very undesirable result. In this case, could using the parking brake in ...
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49 views

Does the Flight Data Recorder store the data locally or send it to an offsite backup while in flight? [duplicate]

I was wondering, what a black box actually does ? Does it store the in flight data, in case an accident should occur or it's sending it to an offsite backup while in flight ? And if it stores the data,...
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1answer
116 views

Can I use parachute fabric to cover an aircraft fuselage and wings?

... Are there disadvantages to using parachute fabric to cover an experimental aircraft? So far I observed the following: I believe I put this fabric in an open place for a year I found no cracks ...
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2answers
844 views

Why are parking brakes not used for parking jetliners?

From the question 'Do I Set the Parking Brake On the Ramp?' it is concluded that you do not set the parking brake when parking the aircraft. The question concerns small aircraft which can be parked ...
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1answer
285 views

Why disable stall warning based only on low airspeed, rather than multiple criteria?

One of the factors that potentially contributed to the Air France 447 crash is that the stall warning was disabled when the airspeed fell below 60 knots. I understand why this is -- you don't want to ...
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2answers
207 views

What solutions are there against deep stalls?

What solutions are there against deep stalls? According to SKYbrary: Aircraft with a T-tail design are often configured with a Stick Pusher system to help prevent the mainplane angle of attack ...
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1answer
122 views

Do any newer production aircraft use venturis as a backup vacuum source?

I began my flight training in a Cessna 120 with 2 venturis as the source of vacuum for my DG and TC. They worked well in flight. Are there any aircraft with deployed/deployable venturis out there? ...