All Questions

0
votes
4answers
129 views

Does an rc plane tail also have airfoil or is it just flat material? [closed]

I've chosen an airfoil for the wing, now i'm confused weather i should do the same for tail or just attach a flat piece of wood as tail. I'm going for conventional tail design. This is my first ever ...
0
votes
0answers
41 views

Oultlet vane guides

I have looked around the web and I could not fine this information. How many vanes are there for the CF6-80 and the CFM-56? Is the count dependant on anything particular, such as fan diameter?
4
votes
1answer
204 views

Can you help me ID these two helicopters?

Hey folks! Desperate to find what these two helicopters are. Any help greatly appreciated!! A
0
votes
0answers
26 views

What is the importance of Lyapunov stability for non linear control? [migrated]

I understand that studying stability gives a particular region from which if we start it will converge to an equilibrium point. But why is the study important specifically for designing non linear ...
4
votes
2answers
101 views

Does load factor affect roll rate?

To be clear I am referring to a given aircraft at a given weight, speed, attitude, etc everything else the same except one is at say 0.5g and the other at 2.5g will there be a difference in roll rate ...
0
votes
0answers
59 views

Do aircraft use some kind of stability control to keep the aircraft on the runway during landing? [duplicate]

Modern automobiles use an electronic system called ESP to keep the car on track in slippery situations. Do modern jet liners have a similar system to aid the pilot in keeping the aircraft on the ...
-1
votes
2answers
123 views

How are aircraft brakes applied? [duplicate]

I read somewhere that when both rudder paddles are pushed simultaneously it produces a braking effect. Is this true? If yes, please provide a detailed description of the above mentioned system.
0
votes
0answers
53 views

Transponder code at gate [duplicate]

Why do you have to select 2000 on the transponder first, prior to selecting the unit off? Is this an ATC consideration?
6
votes
2answers
368 views

Does the person directing the plane to parking not risk getting ingested by a jet engine?

According to answers in this post, a jet engine can suck a human into its engines, even on idle power. Aircraft use their engines post landing taxi and into their parking space, and I notice people ...
3
votes
1answer
606 views

Could Airbus resume production of the A380? [closed]

Airbus is phasing out the production of their A380 superjumbo due to low demand from airlines. But what if (for the sake of argument) in the future Airbus' prediction of the need of a large aircraft ...
1
vote
2answers
90 views

What is the maximum distance for class C service?

Sectionals say to contact the approach center of a class C airspace within 20 miles. Is this a suggestion or a rule? What is the maximum distance to contact them via radio, other than signal ...
7
votes
5answers
2k views

How is radar separation assured between primary and secondary targets?

Air traffic control radars come in two flavours, with most ATC centers using both and displaying the output of both on a single screen: Primary surveillance radar (PSR) is a true radar system, which ...
0
votes
1answer
116 views

What is the largest flight school in the U.S. that does not offer a degree?

Definition of "largest" for the purpose of this question: the greatest number of flight operations per year on average. What is the largest flight school in the United States that does not offer a ...
-1
votes
0answers
44 views

Avionics and Electrical Engineering Research Areas [closed]

I want to ask about the most research areas in Avionics and Electrical Engineering field. I am an avionics engineering master student and I want to do my research in one of the top globally desired ...
1
vote
1answer
179 views

What's the purpose of airline CREW tags? [closed]

I see it sometimes on airline crew luggage, but not always. I see these come with airline name, sometimes airline base code and large CREW. What is the purpose of these airline crew tags? After all, ...
2
votes
1answer
134 views

How is altitude correlated with true airspeed?

I am trying to understand the BADA 3.0 dataset (specifically I am looking at Performance Summary Tables): E.g. What is not obvious to me is why those tables mention only single TAS for specific FL. ...
-3
votes
3answers
162 views

Is a smart flight data recorder possible? [closed]

Let's consider the following scenario: A flight is in trouble, the flight data recorder senses it(Anything the computer would sense and deem would result in an accident), it drains fuel from the tanks ...
24
votes
2answers
7k views

Is flight data recorder erased after every flight?

Flight data recorders store massive amounts of data per flight and despite improvements year on year with data storage as with Moore's law, carrying larger and larger amounts of data can become ...
1
vote
1answer
226 views

How much data is stored in the flight data recorder per hour in a typical flight of an A380?

One drawback or impediment to the storage of flight recorder data on the cloud is the amount of data that'd be transmitted and at cost. How much data in GB or TB is stored in the flight data recorder ...
4
votes
0answers
96 views

Is In-Seat Rest used regularly where it is legal, and is it restricted by airline SOPs?

This answer says that a pilot who is not flying (PNF) can make use of a procedure called In-Seat Rest to take a nap during flight. A comment on the same answer says that this is illegal in the US, ...
14
votes
3answers
6k views

What is this 4-propeller plane?

My dad noticed it flying quite low today, sadly we do not have a better photo. 4-propellers and uniquely shaped tail assembly. Plane was spotted in northern Poland, around 9.30AM, near border with ...
1
vote
0answers
98 views

Is it legal to install a TACAN receiver on a civilian aircraft?

It is legal to use the DME from a VORTAC station (see Is it possible for a civilian to use a VORTAC station? for details), but is it also legal to use the TACAN for bearing determination? This would ...
0
votes
1answer
52 views

When did the FAA begin offering added-rating tests for flight instructors?

I don't recall there being abridged versions of the knowledge test for added CFI ratings when I earned my initial CFI certification such as AIF(flight instructor instrument added rating), and back ...
1
vote
0answers
29 views

Does the FAA provide an explanation for why certain knowledge tests require instructor endorsements while others do not?

I am working on adding instrument to my flight instructor certificate, which would mean I will likely take the "Flight Instructor Instrument Airplane (Added Rating)", test Code AIF. The test for ...
0
votes
2answers
140 views

Why is the rotor system of an aircraft and the rotor system of a helicopter different? [closed]

Both aircraft with propeller(variable pitch) and helicopter rotor system can change pitch. Of course, for helicopter, there is not only collective pitch control but also cyclic control. The aircraft ...
8
votes
1answer
869 views

What causes the sudden spool-up sound from an F-16 when enabling afterburner?

What causes the sudden spool-up sound from an F-16 when enabling afterburner? I've included a video to make it clear what sound I'm referring to: at 1:16, I assume ...
3
votes
2answers
624 views

Landing in very high winds

A few weeks ago, a storm passed through my area with winds reported at 55kt and gusting to 68kt. Many light planes managed to break their tie-down ropes and were flung around the ramp area, which isn'...
0
votes
0answers
35 views

Criteria for Aviation Weather Hazard (Avoid vs. Go through?) [duplicate]

I have heard that a pilot may have to re-route his/her trajectories if weather hazards (e.g. icing, convective, volcanic ash, and turbulent) are showing up to the original planned trajectory. In the ...
0
votes
2answers
86 views

Does an AD terminate by issuing new one?

When an AD superseded by a new one, Does the operator still retain the instruction of superseded AD even though the AD include repetitive action?
0
votes
0answers
25 views

In Canada what categories is air traffic control broken down into? [duplicate]

What are the sub-sections of air traffic control in Canada, and what does each sub section perform? I know a couple of basics like approach control, ground control, and terminal control, but I don't ...
21
votes
2answers
8k views

Are cabin dividers used to “hide” the flex of the airplane?

Recently onboard an aircraft, a fellow passenger told me that the cabin dividers (walls) inside an aircraft are there to limit your line of sight such that you will not notice the flex of the airplane....
32
votes
4answers
11k views

Why isn't airport relocation done gradually?

Recently Istanbul airport (IST) was relocated from Atatürk over 2 days. Munich Franz Josef Strauss (MUC) was also moved overnight from Munich Riem. Doesn't it cause chaos, since most employees are new ...
0
votes
0answers
23 views

What are the procedures for radio malfunction [duplicate]

I was reading this question Do airline pilots ever risk not hearing communication directed to them specifically, from traffic controllers? and there is a answer mentioning radio malfunction If it's ...
4
votes
1answer
128 views

Do 'threshold' and 'end of the runway' mean the same thing?

While I studied aviation, I got confused by these two words. Can anybody explain whether they're the same or not, and if not, what is the difference?
1
vote
1answer
51 views

Why were early AFRP A300/A310 rudders prone to delaminating?

Reading the TSB report about that time an A310's rudder flew the coop, I came across this piece of background information (section 1.12.9.1, History of Earlier Design Aramid Fibre-Reinforced Plastic ...
2
votes
1answer
93 views

Could placing a fan jet further in front and closer to the wing create undesired pitch motion from its exhaust?

So far in discussion of the Max 8 people have mentioned CFM LEAP cowling size and 737 tail design as possible factors in the need to develop a MCAS system to control tendency to pitch up at high AOA. ...
2
votes
3answers
136 views

Are magnetic turning errors due to the southern side of the compass being weighted?

When I was in college, I had an instructor who taught me that the turning errors in a magnetic compass were due to a counter-weight installed on the south side of the compass that was intended to ...
2
votes
1answer
128 views

What are these openings on the TBD/TBM Avenger?

I've been looking at some pictures and models of the TBF1 and TBM3 Avengers, a torpedo and dive bomber from WW2. I've noticed in some cases there are these openings/slots towards the leading edge of ...
0
votes
0answers
22 views

How to calculate cross-/headwind components on Jeppesen Student flight computer?

How does one calculate the cross-/headwind components on a Jeppesen Student flight computer (CSG) given the aircraft’s true heading, the wind direction and the wind speed? Say 040 degrees, 070 degrees ...
10
votes
2answers
250 views

Is there a Cockpit Video Recorder?

Often we hear about Cockpit Voice Recorders, but are there video recorders?
2
votes
1answer
183 views

What does the PBY Catalina's APU look like?

I found some specifications of the PBY Catalina that mention an APU, but I did not find any other references to this APU. It seems logical that such a plane has an APU, and that this APU is not like ...
10
votes
3answers
3k views

Do airline pilots ever risk not hearing communication directed to them specifically, from traffic controllers?

I gather pilots communicate regularly with air traffic controllers within air traffic controllers' jurisdiction or airspace as they enter the space, during their time in that space and as they leave. ...
1
vote
1answer
146 views

Are these questions really on the FAA Glider Commercial written test?

I'm currently working on my Commercial Glider rating and for the written, I am using a popular test prep package. The package allows the specific selection of Commercial Glider (vs Airplane, ...
1
vote
0answers
37 views

What is the traffic pattern altitude at KSQL?

According to some online sources (https://skyvector.com/airport/SQL/San-Carlos-Airport and https://www.airnav.com/airport/KSQL) TPA at San Carlos Airport is 800 ft AGL. However, reading the Chart ...
1
vote
0answers
60 views

Would throttle steering of a forward-swept-winged aircraft be possible?

Fortunately (or perhaps unfortunately, given the number of crashes that had to occur for us to figure it out), the use of throttle manipulation to control an airliner with disabled primary flight ...
1
vote
1answer
62 views

How are change-overs between regional air traffic patterns communicated? [duplicate]

The airport near me that has two major landing/takeoff patterns part of a large regional air traffic control plan involving other major international airports (SFO/OAK/SJC) The duplicate-cited ...
1
vote
1answer
108 views

Which is better a push fan, a pull fan or both

intricate examination of modern by pass jet engines is despite where it is mounted, they use a pull fan configuration to generate thrust, which set up the most efficient, a pull fan or a combination ...
1
vote
1answer
106 views

Can the Kawasaki T-4 carry weapons?

The Kawasaki T-4 is a jet trainer aircraft. However, it seems to have two hardpoints. Armament Two hardpoints for external fuel tanks Can these be used to carry weapons? E.g., unguided bombs ...
-1
votes
1answer
94 views

Flight Mode in cellphones and in Flight WiFi access [closed]

More and more flights have in flight wifi. On the other hand, the standard pre flight announcement still tells to switch off phones or put them in flight mode. So, once the in flight wifi is turned ...
-1
votes
0answers
62 views

Shouldn't Android GPS work when in flight even without a cellphone signal? [duplicate]

Sometimes in-flight (commercial airliner) I've checked Google Maps on my Android phone to see if it will show my location. I even tried to check momentarily when Flight Mode was turned off. Still it ...

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