All Questions
24,972
questions
6
votes
1
answer
745
views
Is this Common carriage?
It’s been a little while since I’ve studied common carriage vs private carriage.. I need a little advice with this situation. My dad is purchasing a plane (in his name and company) and I’m going to ...
- 117
-1
votes
2
answers
329
views
What department does an airline pilot fall under?
On LinkedIn, I saw on the Page for the Harry Reid International Airport there were charts for 346 members, 157 of them working in Operations, 43 for Administrative, 37 for Business Development, 25 for ...
0
votes
1
answer
85
views
what is the cross section of an elevator and trailing edge flap?
Is the cross section of both a Trailing edge flap and elevator an aerofoil please or, like i've shwon in in image below? I tried to find a side view of an elevator and TE deflected to see this for ...
- 53
1
vote
1
answer
64
views
What is monotonous and non-monotonous flow?
I'm not an engineering graduate so I'm learning as I go along. I've just read a sentence that states:
The transition shapes are identical, while the variety of growth rates of intermittency
are non-...
- 113
0
votes
1
answer
73
views
As a holder of a private pilot license foreign based, can I continue my training to commercial?
I have currently acquired permanent residency and want to continue my career in aviation.
My private pilot license in the USA is foreign based, can I take the commercial pilot course normally or do I ...
1
vote
1
answer
88
views
How do I know which outer grid shape is best for CFD?
I’m looking into running a CFD simulation on an aerofoil in transonic flow (M=0.8) but am unsure about what external grid shape to choose for my computational domain?
I read into 3 main types:
C-grid
...
- 53
1
vote
1
answer
146
views
Has a wingsuit pilot ever flown inverted for an extended period of time (say more than 5 seconds)?
Has a wingsuit pilot ever flown inverted for an extended period of time (say more than 5 seconds)?
(Additional content added to add length to "meet our quality standards") --
It seems it ...
- 21.8k
3
votes
1
answer
103
views
What is the specification of control cap (control tower) glass in FAA?
Does anyone know where I can find the specification of glass for control tower?
- 39
3
votes
2
answers
1k
views
Does rain affect VFR criteria?
Does rain affect VFR criteria? In other words, if visibility is 1500m or more and you are in sight of the surface, but there is heavy rain, can you still fly VFR?
Here is an example of the conditions ...
- 12.5k
1
vote
0
answers
96
views
Station Passage for an NDB
I read somewhere that the first station passage for an NDB holding pattern is when the bearing pointer passes the 90 degree index. Then the document went on to say that for subsequent crossing of the ...
- 886
0
votes
0
answers
37
views
When are you established on an RNAV segment under ICAO rules?
In the U.S. it is when you are within 1X the required accuracy. I have not been able to find the source publication for ICAO.
- 886
0
votes
0
answers
44
views
climb angle of 737-800 performance [duplicate]
I am doing a report on 737-800 and I have questions about its climb angle performance;
I am plotting a climb angle VS altitude graph for the aircraft, why does the climb angle take off at an angle and ...
- 21
2
votes
1
answer
332
views
Why does the climb angle of 737-800 peak shortly after take-off before reducing again?
I am doing a report on 737-800 and I have questions about its climb angle performance;
I am plotting a climb angle VS altitude graph for the aircraft, why does the climb angle take off at an angle and ...
- 21
2
votes
1
answer
72
views
If I know both Re number and Mach, how do I incorporate both into my simulation?
I’m trying to simulate an aerofoil based on experimental data with flow in the following conditions:
Mach=0.84
Reynolds number (Re) = 3*10^6
I wanted to keep my chord length at 1unit but then what ...
- 53
1
vote
1
answer
123
views
What is meant by "shroud" in a gas turbine? For example, an inner shroud and an outer shroud in a vane device in a gas turbine? Thank You
Vane device comprises inner shroud, outer shroud, aerofoils. I cannot understand what shrouds are, and their function.
0
votes
0
answers
37
views
Reduced stereopsis in an EASA class 2
I want to know if a person who have a reduced stereospis in an eye maybe due to an amblyopia is able to obtain a EASA class 2 medical certificate.
Thanks!
- 71
6
votes
1
answer
231
views
Are there any commercial flights that require passengers to use supplemental oxygen?
In the United States, Part 121 operations can apparently can be conducted with cabin altitudes above 15,000 ft as long as all passengers are provided with supplemental oxygen when the cabin altitude ...
- 133
0
votes
0
answers
82
views
How do "thrust rating limits" work on the A320?
On page 11 of this A320 FCOM (power plant section only), a "thrust rating limit" mechanism is described. However, it doesn't go into much detail, and I could find little other information ...
- 133
3
votes
1
answer
157
views
Is the AOA on the horizontal stabilizer positive?
I am making a flight sim and would like some help.
If I am correct, the angle of attack on the horizontal stabilizer should look something like this:
aoa(Hstab) = aoa(Wing) - downwash + Hstab ...
- 69
9
votes
4
answers
6k
views
Why are there (almost) no civilian single engine jet aircraft?
I have been looking at various engine configuration in jet powered aircraft. Most have 2 jet engines mounted either side of the fuselage, there are trijet models (e.g. B-727, MD-11) there are also 4-...
- 455
0
votes
0
answers
45
views
What's the most cost effective way to keep a PPL current with Ultralights?
I hold an NPPL(m) - which is a UK license for Micro/Ultralights only.
I wish to "upgrade" (sadly there is no formal upgrade path) to a PPL so that on occasion, I can hire 4 seaters.
My ...
- 12.5k
3
votes
2
answers
2k
views
Does the Osprey ramp have several configurations?
I am building a model of the Osprey. The kit gives me an option to stow the ramp or cut the ramp in half into two units, the first section lowered and the tail section swing into the top of the ...
- 31
1
vote
1
answer
282
views
What type of Flare is best used in GA Survival kit?
I have a question regarding Survival Kit Signaling equipment for a General Aviation aircraft. what type of emergency Flares are recommended for aviation use? The Signaling gun with cartridges type or ...
- 23
1
vote
1
answer
349
views
What is a shockwave, and how does it form?
so I came across this picture on this website: https://howthingsfly.si.edu/aerodynamics/shock-waves
I’m curious about why/how this shockwaves occurred after the supersonic speed and, would like to ...
- 53
19
votes
4
answers
12k
views
Why are there no helicopters with the rotor mounted on the bottom?
Downwash from the rotor of a helicopter creates drag on the helicopter body acting against the lift force of the rotor.
Why are there no helicopters with the rotor under the main body of the ...
- 199
0
votes
1
answer
74
views
How many ways/methods to calculate propeller/rotor's power output? Which one is the best?
Source: Wikipedia
I want to know how many ways/methods to calculate the output power of a propeller? So far I knew three methods:
Momentum Theory (MT),
Blade Element Theory (BET),
Blade Element ...
- 4,411
7
votes
2
answers
578
views
Why does the taxiway parallel to Runway 18 at Frankfurt Airport exist?
I was looking at these two questions about the single direction takeoff-only runway 18 at Frankfurt Airport (EDDF) when I noticed that it has a full-length taxiway (taxiway Y5) to its east.
As far as ...
- 133
1
vote
0
answers
33
views
Alternative methods to determine A-320 (Pegasus R1A) Optimal FL
320 FO looking to see if anyone knows a method to determine optimal flight level (essentially compute optimal step climb point) from the F-PLN page. I’m well aware of computing optimal S/C from the ...
- 367
1
vote
0
answers
83
views
How many exterior stencil lettering (marking out maintenance or critical flight parts) are there on a Delta 767-300?
I was wondering how many different stenciling areas are located on a Delta 767-300 and wanted to know general locations of each. Some examples include the markings of "Static Port" and the ...
- 11
5
votes
3
answers
3k
views
Why is it that when autopilot is maintaining cruise, we don’t feel the changes when lift increases?
When we’re inside an aeroplane, when we’re in cruise, why is it that we don’t feel the changes in altitude, lift and the adjustments for example from the elevator on the plane as the weight is burned ...
- 87
1
vote
0
answers
36
views
Obtaining a special formula for the Theta-Beta-M diagram
I'm currently studying shockwaves, particularly their effects on drag.
I've stumbled upon an odd formula in "Elements of Gasdynamics" (Liepman and Roshko, pages 52-53), in there I saw an ...
-2
votes
1
answer
160
views
How is an airliner trimmed nose-down or up? [duplicate]
so when a plane is in cruise, it loses weight and then the weight begins to exceed lift.when this happens, the plane begins to climb.
My question is this please:
The plane would be trimmed up or down ...
- 87
1
vote
0
answers
39
views
Engine Performance Data for GE F414-400
I am currently in Capstone for ASE, and for our course we have been tasked with reverse engineering the X-59 QueSST created by NASA and Lockheed Martin. I am the propulsion lead for our team and I ...
- 11
0
votes
2
answers
207
views
What is the maximum speed at which thrust vectoring can be used? Thrust Vectoring on the SR-71
The SR-71 is limited to a 45 degree bank turn at speeds in between mach 2.85 to ~3.2. This means the blackbird would take almost 5 1/2 minutes to make a 180 degree turn at mach 3. Would it be possible ...
- 13
3
votes
2
answers
247
views
Why was the Me 262's top speed at 6km?
The P-80 had its top speed at sea level, but the Me 262 achieved its top speed at 6km altitude. What were the reasons for this? Was it that the engine was designed for such an altitude to deal with ...
3
votes
7
answers
585
views
If in a coordinated turn, the horizontal lift vector is equal to the Centrifugal force. Then how is the aircraft still turning?
Image source
How does the Aircraft continue to turn when the both the Horizontal component of lift and the centrifugal force are equal?
- 609
0
votes
2
answers
75
views
What is aeroplane trim and how does it control/adjust the elevator in cruise?
so in my last question, ‘trim’ popped up a lot and after reading up on it I got this: it’s used to adjust the forces on the control surfaces so that the aircraft maintains like a set input
But what I ...
- 87
1
vote
1
answer
85
views
Are there FAA regulations for designing new aircraft with pets in cabin?
I understand that these are FAA regulations on pets flying in-cabin on a commercial plane: https://www.faa.gov/travelers/fly_pets/cabin_pets
Let's say I wanted to design a new type of commercial ...
- 19
1
vote
0
answers
117
views
Why is there variation in helicopter autorotation maneuvers?
Why are there some different autorotation techniques?
For example, on light helicopters, like the Airbus Helicopters H125 or Aérospatiale Gazelle, you do not flare too much: at 70-100ft AGL adjust ...
- 111
3
votes
0
answers
55
views
How do Antishock Bodies / Cuchemann Carrots delay shock-induced flow separation?
There are several online resources that describe these aerodynamic devices as either "Antishock Bodies" or "Kuchemann Carrots" and that they are used to produce some combination of ...
0
votes
1
answer
103
views
Where should I start if I want to design a new type of aircraft? [closed]
I want to conduct informational interviews with individuals who work in aviation/aerospace to understand the various roles involved in designing a new aircraft and bringing it to market.
I'm curious ...
- 19
1
vote
1
answer
394
views
How are flaps and the elevator positioned in cruise?
so I understand that an elevator is used to maintain cruise (straight level and unaccelerated flight) but I’m curious now about how the flaps and elevator is positioned whilst an aeroplane is trying ...
- 87
0
votes
2
answers
69
views
"Pure" Aerospace engineering vs mechanical engineering/pathway aerospace?
Does "pure" aerospace engineering give better aero-knowledge then mechanical engineering/pathway aerospace?
What is point of specialization aerospace at mechanical engineering, isn't ...
- 1,648
2
votes
2
answers
114
views
Is there any estimate of the number of cargo aircraft which can be handled and accommodated per hour at Chitral Airport in northern Pakistan?
I am working on a modeling case study in which I am using a realistic disaster response operation situation after a major earthquake in Chitral, Pakistan.
In this regard, I am using Chitral Airport as ...
2
votes
0
answers
156
views
What’s the difference between a compressor stall and a surge from the cockpit?
I understand the difference between a compressor stall and surge.
Stall: One or two blade stages exceed the critical AoA, the airflow is turbulent, and the smooth airflow through the compressor is ...
- 151
14
votes
2
answers
4k
views
Do fighter pilots have to manually input the ordnance they have loaded on the aircraft?
When ordinance is loaded onto a fighter or bomber, does the system automatically know what ordnance it has? Or does the pilot have to manually input for each pylon?
- 6,322
0
votes
3
answers
259
views
How exactly is cruise maintained as fuel is burnt?
Can someone please explain how exactly cruise (I think it’s called straight, level and un-accelerated flight) is maintained for like an airliner please?
I’ve read a few answers on this website for ...
- 87
5
votes
1
answer
625
views
Steepest climb a wingsuit pilot can achieve?
There was a question yesterday about landing in a wingsuit; the main issue is, of course, the high speed, both vertically and horizontally. One way to reduce speed is flaring; another would be to gain ...
- 1,231
0
votes
0
answers
26
views
ATPL theoretical course hours per subject
do someone know what is the hours per subject mandatory for ATPL (A) EASA program. In the Easy Access Rules for Aircrew (PART FCL) it said:
The 750 hours of instruction should be divided in such a way ...
- 21
0
votes
1
answer
71
views
When doing calculations with TSFC of multiple engines, do we add all TSFCs together?
I'm doing an assignment at the moment where I need to evaluate FOMs based off some characteristics of an aircraft. One of the parameters I need to evaluate is the best milage, which I'm doing like so:
...
- 3