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1answer
27 views

Struggling to navigate with a vfr sectional chart

I am doing my PPL atm. I am struggling to navigate with a vfr sectional chart , i am getting lost more often. how do i fix this issue ?. Any tips ? I have trouble identifying small towns, ...
0
votes
1answer
25 views

Magnetic variation calculation

What I'm trying to do is basically plot a rectangle on a runway that goes parallel with the runway. When I start out everything works as expected: But what I notice is that as I go further down the ...
3
votes
1answer
73 views

Which (if any) if the “most major” airport / field / strip on Antartica?

Which airport (/field, /strip, /skiway) is the "biggest", "most supported" on Antartica? So, • has the most permanent staff (do any?) • has the most runway facilities such as say runway lights, ...
2
votes
2answers
74 views

What effect does the Space Shuttle have on the Shuttle Carrier 747

I saw a picture of this the other day and it got me thinking... How does having the shuttle on the back of the 747 affect the factors of flight? My guess is that is provides an incredible amount of ...
6
votes
2answers
312 views

How do owls fly so silently? [on hold]

is it because they flap gently, they flap less often or do is their structure responsible.I was thinking their principle of stalking can be applied to stealth aircrafts. Is it possible?
1
vote
1answer
272 views

Can I listen to control tower frequencies on a ham radio legally [duplicate]

Is there a frequency I can tune into to listen to airport I’m in Durham by RDU AIRPORT and would like to listen in on a ham radio only legally
0
votes
1answer
73 views

How long is maximum time to investigate an airplane crash?

Lion Air flight 610 was crashed on 29 October 2018. It was Boeing 373 Max 8. Almost one year ago. I have not heard any news from National Transportation Safety Committee (NTSC) when they will release ...
1
vote
1answer
99 views

Do the thrust reversers have only two modes : idle and full?

Are there any intermediate thrust reverser settings also? How often do pilots use these intermediate settings?
-1
votes
0answers
52 views

Model scale plane [on hold]

So i am wanting to make an scale model airplane. i only don't know what aircraft type it should be. one thing that i am sure about is that i want it to be or an A320-200, A320NEO, A321 or A321LR. So ...
2
votes
2answers
132 views

Why isn't luggage that goes in the hold scanned as thoroughly as hand luggage? [on hold]

I'm a regular international flyer, my hand luggage is always scanned, and despite my best efforts it often gets searched, either due to mistakes on my part, or security being extra cautious. On my ...
11
votes
1answer
2k views

Why is a 737 Original speed-restricted below 10,000 ft with inoperative windscreen heating?

According to this page on the 737's operational limitations, the Original 737s (737-100/-200) are limited to 250 KIAS below 10,000 feet if the windscreen-heating system is inoperative: Anti-Ice &...
3
votes
0answers
65 views

Why was the Tu-104 so prone to navball-disabling electrical power failures?

Of the (rather numerous) accidents involving the Tu-104, several were either caused or aggravated by major electrical failures, which disabled the aircraft's navballs, which caused the pilots to ...
1
vote
1answer
42 views

Partial panel power on stall under the hood

What do you use for control and performance instruments while demonstrating power on stall under the hood with attitude and heading indicator covered (No vacuum instruments in 6 packs ) ?
1
vote
0answers
55 views

What is effective airflow?

As I understood, when the relative airflow meets the wing it changes, and the resulting flow is called effective airflow?
1
vote
0answers
41 views

What angle are front rotors of tandem helicopters tilted and why this value?

I've read that the front rotor of tandem helicopters are tilted forward so that you can get a forward velocity with no nose-down pitching of the fuselage, but what angle is used for this tilt and why ...
4
votes
1answer
53 views

Why would my transponder interfere with my ADF?

The ADF in my plane works very well until I switch the transponder to ALT. At that moment, the ADF needle is stuck in a random position and will not show the direction to the selected NDB anymore (the ...
0
votes
0answers
60 views

If one cabin PA loudspeaker fails, do the rest get louder? [on hold]

In an cabin intercommunication data system, if one loudspeaker fails do the rest get louder? Or does the volume stay the same without the failed speaker?
2
votes
1answer
76 views

Which instruments are assigned to Pilot Flying and Pilot Not Flying in the various flight stages?

Is there a document which highlights the responsibilities of the Pilot Flying and the Pilot Not Flying? Specifically, I want to find out what instruments are assigned to whom in all the stages of ...
11
votes
2answers
3k views

Is there a minimal approach speed for airliners during rush hour?

For busy airport, sequencing can be complexe. If the ATC put all aircraft in front of each other with the correct separation (which can be really small for busy airports) in final, if the airliners' ...
3
votes
2answers
100 views

What does “wraparound” mean in the context of flight controls?

In the references regarding the flight control (for example in F-16) I see the word "wraparound". For example "Rudder coil wraparound", "IBU pitch wraparound", "IBU lateral wraparound"or "AMUX bus ...
2
votes
1answer
128 views

Is the Mil Mi-2 still in production?

I have read conflicting reports that this Russian helicopter is out of production, yet others say otherwise. Could anyone confirm?
9
votes
0answers
65 views

Why does spoiler extension cause straight-wing Learjets to pitch down, rather than up, and why did it take so long to discover this?

Straight-wing Learjets (the 23, 24, 25, 35, and 36), the first generation of the popular business-jet series, are (especially when not equipped with any of the many first- and third-party wing ...
3
votes
1answer
93 views

Is there a minimal legal ground clearance to use an international airport?

The question arises while I was looking at the evolution of the B737 engines and the lower and lower space available between ground and engines. Then I realized that ground clearance is also low for ...
0
votes
1answer
76 views

How to match ATC requirements to work in EU?

My Brazilian boyfriend is finally planning to move into the EU zone (he actually got an Italian passport). He would be glad to keep his work as an Air Traffic Controller but despite his 10 years ...
3
votes
2answers
137 views

What is the explanation of this airfoil phenomenon? Why the air from below the leading edge's tip deflected up?

I have difficulties to understand this air phenomenon, why the air from below the leading edge's tip (from below the horizontal line) is deflected up and not just follow the bottom wing's surface? ...
5
votes
1answer
176 views

A commercial jet with rear tail-mounted engines and 3+3 seat pattern?

I have just spotted a cameo in one of the old CSI:NY episodes. External shot showed a commercial jet, rather big aircraft, with rear tail-mounted engines. While internal shots shown 3+3 seat rows ...
2
votes
1answer
137 views

Why Apollo 11 was launched in summer? (Performance question) [on hold]

The question could seems stupid, but i think that best moment to launch a rocket is when temperature is lowest in order to achieve the best performance in a reaction engine. I do not know if there is ...
2
votes
0answers
95 views

What role does this ground crew member fulfill?

At the Miramar airshow a couple of weeks ago I noticed that in addition to the crew chief of each Blue Angel there was one additional individual standing behind the crew chiefs between aircraft #3 and ...
0
votes
0answers
81 views

What replacement wings are available for old F-16's?

Eventually, material fatigue will force any aircraft to either be grounded or have its wings rebuilt, or replaced. And please, correct me if I'm wrong. For the F-16, if one were to replace its wings, ...
2
votes
2answers
164 views

What is the answer to this question about aircraft position based on an NDB?

An aircraft is intending to track from NDB ‘A’ to NDB ‘B’ on a track of 050° (T), heading 060° (T). If the RBI shows the relative bearing of ‘A’ to be 180° and the relative bearing of ‘B’ to be ...
0
votes
0answers
21 views

Is there a reason why it would be a good idea to log ATD and FTD time separately?

Historically, I have a column in my logbook that is "Ground trainer", which encompasses all flavors of flight simulators/legally recognized training devices. I encountered a student passed to me by ...
10
votes
2answers
713 views

Why are Krueger flaps called flaps and not slats?

I always thought that flaps are trailing edge high lift devices and slats are leading edge high lift devices. This is also confirmed by the accepted answer for What is the difference between flaps and ...
2
votes
1answer
109 views

Is the airspeed for the minimum the same for the theoretical power required curve as for the shaft power required curve?

I am aware that the efficiency of the propeller implies a difference in the values of the theoretical power required curve and the corresponding shaft power required, but does that efficiency ...
3
votes
2answers
120 views

How to artificially increase the Reynolds number in a wind tunnel?

I'm currently scaling down a model 64 times for a wind tunnel analysis, where I'm measuring drag force (for drag coefficient) and lift force (for lift coefficient). However, I read that scaling down ...
0
votes
0answers
38 views

What is the air/fuel mixture ratio in a turbojet engine?

How does it relates to stoichiometry ? What are the possible extinction accidents related to air/fuel mixture ratio ?
1
vote
2answers
128 views

Why did the DC-3 have a much higher cruise speed than the HP.42, despite their similar weight and power?

A review of the classic DC-3 and the Handley Page HP.42 yielded a surprisingly close match in empty and max gross take off weight at around 18,000 and 28,000 lbs for the HP.42 and 16,000 lbs and 25,...
1
vote
0answers
150 views

If an fighter jet that it have twin rudders, in use the angle of deployment it is not identical. Which is more deflected and why?

If an aircraft have two vertical tails then pilot push in the rudder pedal the rudders will not be deployed at the same angle.It is used throughout the all envelope of flight or is it possible only ...
3
votes
1answer
47 views

Under what circumstances is the Aircraft 'Stability-Axis' system used in either design or analysis of aircraft?

I understand the definition of aircraft 'Stability-Axis', but I am unsure as to the circumstances in which forces or moments would be expressed in this axis system. Is there a convention? What I do ...
-2
votes
1answer
137 views

Is the “Boom” project vaporware or really going to happen? [on hold]

Is this https://boomsupersonic.com viable or more vaporware? Any solid information?
1
vote
0answers
28 views

what is the physical explanation for additive drag?

from what i understand, additive drag is not really drag. it is a way to account for the variation of inlet condition due to conservation of mass. but i still don't get why it create drag(negative ...
4
votes
1answer
189 views

How do weapon pylons attach to a fighter's wings?

How do weapon pylons attach to a fighter's wings? I'm particularly interested in the inner structure.
1
vote
1answer
139 views

If you make up your own IFR waypoints, how does ATC know where they are?

If you make your own IFR waypoints, how does ATC know where they are? Just finished my IFR course in Canada. Was surprised to learn that you can make up your own IFR waypoints. If all IFR flights ...
4
votes
3answers
269 views

What is the difference between experimental and amateur built aircraft in the US?

What is the difference between experimental amateur and amateur built aircraft in the US, or are they the same? If not, is there a difference re specifications, inspections, engines, passengers, etc.?...
0
votes
0answers
112 views

“If it looks right, it flies right” Any examples of a beautiful plane which flew horrible? [on hold]

We find good-flying planes good-looking, mostly. Are there examples of beautiful planes which didn't fly well? EDIT:(Only technically, not if it didn't do well commercially). Well. Beside the ...
-1
votes
0answers
35 views

OnCondtion engines concept for PW5454B engines [on hold]

When we define the "On condition" concept to aircraft engines then do PW545B engine models come under this "On condition" concept?
0
votes
0answers
40 views

What is the relationship between ADS-B IN/OUT and different mode transponders?

What is the relationship between ADS-B IN/OUT system and different mode transponders? Can a aircraft with mode A or C transponder have the ADS-B in/out capability, that is getting more detailed ...
0
votes
1answer
69 views

Why do oblique-wing aircraft suffer from significant aerodynamic cross-coupling?

Oblique-winged aircraft (which have one long wing that pivots around a central point, so that the wing is straight at low speeds but strongly-swept - one side forwards, the other side back - at high ...
0
votes
1answer
48 views

How many tendencies are affected by Gyroscopic precession for single propeller airplane?

I have heard about LEFT turning tendency affected by gyroscopic precession of propeller (which is turning clockwise or counter clockwise if seen from front side). But I just watched a video on Youtube ...
16
votes
4answers
6k views

Is it allowed to let the engine of an aircraft idle without a pilot in the plane. (For both helicopters and aeroplanes)

Is it allowed to let the engine of an aircraft idle without a pilot in the plane. (For both helicopters and aircr). Would there be a difference between a C172 and a 737?
6
votes
2answers
108 views

In a helicopter does forward flight produce a rolling moment?

In forward flight the advancing blade will produce more lift than the retreating blade. It seems this would produce a rolling moment. If so, does the pilot have to move the cyclic to compensate for ...

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