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2
votes
1answer
35 views

Do you need to have a raft if you're in a seaplane?

One of the basic rules of flying over water is that you need some kind of raft if you're out of power-off glide range from land. Does that also apply to seaplanes or amphibious planes?
5
votes
3answers
60 views

Why might a too-wide runway be a problem?

In the September 2020 issue of EAA's Sport Aviation, Budd Davisson writes Runway width becomes a problem for some taildraggers when it gets to be less than 35-40 feet because of the lack of ...
2
votes
2answers
63 views

Is there ground effect flying below an infinite 2D plane as opposed to above one?

People talk about wing tip vortices and say things like the ground acts as an aerodynamic mirror. What (if any) difference would there be for a wing flying underneath a 2D plane? As in the picture ...
1
vote
2answers
79 views

Has aircraft lower weight on eastward flight due to increased centrifugal force?

Aicraft speed is add it to earth rotational speed when fly to east,centrifugal force is increased compare to westward flight.That mean aircraft weight is reduced = smaller lift means flight with lower ...
3
votes
2answers
397 views

Is it possible for the Boeing 737NG to do a powerback?

I'm curious, in a non-normal situation, where it's not possible to use a pushback tug, would it be POSSIBLE to perform a powerback on the 737NG, assuming the area was reasonably clear of FOD?
0
votes
0answers
28 views

Is there any aircraft operation manuals database publicly available? [closed]

I am studying engine-out departure procedures and I noticed the complexity of their obstacle clearance assessment method. For determining the Net Takeoff Flight Path for the engine failure case, ...
0
votes
1answer
67 views

Why westward flight takes longer time? [duplicate]

• Why fly from east to west takes longer time then flight form west to east and does this apply to both hemisphere?
0
votes
0answers
54 views

Why does the FD's horizontal bar shift upwards while on takeoff roll in the A320?

I have noticed this a large number of times however I couldn't find a plausible explanation for this. Everytime during the takeoff roll the FD's horizontal bar always shifts upwards. What is the exact ...
7
votes
1answer
219 views

Where can I find the active time of a MOA on the VFR chart?

I am trying to find out the time when the HILLTOP MOA is active and its elevation. Where is this information located in a VFR chart?
1
vote
2answers
84 views

Why is the aerodynamic center for most airfoils located at the quarter chord location?

I've been reading several sources on the location of the aerodynamic center https://web.mit.edu/16.unified/www/FALL/fluids/Lectures/f03.pdf https://en.wikipedia.org/wiki/Aerodynamic_center John ...
3
votes
1answer
286 views

Why do some Turbofan engines have multi-stage fans?

I was wondering why some turbofan engine have multi-stage fans. e.g. F-119 engine: F100 Saturn AL-31
1
vote
1answer
55 views

How does a synchro resolver converter work?

There are Synchro converters or transducers used on aircraft to measure angle of attack using 3 sinusoidal inputs. I could not understand where these 3 inputs come from and what angle information is ...
23
votes
2answers
3k views

Are large jet turbofans so easy to turn?

In this question, in the accepted answer, there is a comment by alephzero that says one can actually rotate a large turbofan's blades with one finger! Is that true, ...
1
vote
0answers
79 views

Could an aircraft have squashable wings that get thicker as it flies faster?

As I understand, for high speed subsonic flight a thicker wing is more aerodynamic, and at low speed, a thin wing is preferable. Could aircraft which range in speed from 180 to 620 knots (most ...
0
votes
0answers
14 views

Whats the effect of aerofoil camber and thickness on Clmax and Cdmin?

Does anyone have any experimental references/wind tunnel testing testing data for various thickness and/or camber?
0
votes
0answers
28 views

ICAO language proficiency Test [closed]

I would take some IELP test for Air Traffic Controller to improve my aviation English skill. I got level 4 before, so what should I prepare to get IELP level 5 for the next test?
4
votes
1answer
359 views

Can the load factor during glider winch launch be measured with the G-meter?

I am looking at the flight envelope of a glider, the velocity - load factor diagram. I read that generally the air-frame, the G-meter and the pilot 'experience' the load factor as a G force (an ...
-1
votes
0answers
34 views

Scraping for flight data [closed]

I'm wondering how proprietary flight data is? A lot of the major flight data aggregators I'm assuming you scraping as an additional method to supplement their data sources. I know they have some ...
1
vote
1answer
65 views

What is the range of pressures a space shuttle can withstand?

Pressures, as on the external surface of the space shuttle. I want to design my own functioning space shuttle (on an extremely fundamental level with consideration of only the external structure, ...
0
votes
1answer
51 views

what is a flap hinge moment?

I am a bit confused on how to come up with the flap hinge moment, like, what force is involved and where is the center that the force is wrt. And why is the moment as shown in the above diagram seems ...
1
vote
0answers
30 views

How to convert an EASA ATPL(H) IR to ATPL(A)?

If you are holding an EASA ATPL(H) IR, how can you convert it into ATPL(A) and would you be able to credit your heli hours? As I've 400 hours and it would get longer to build hours with ATPL.
1
vote
0answers
26 views

Do hours flying “advanced ultralight” aircraft contribute towards your license in Canada?

I'm interested in the business possibilities of offering flight training in Southern Ontario, in particular using advanced ultralight aircraft. I realize that this is uncommon, of course, but my ...
0
votes
1answer
98 views

How to make a cockpit LCD display night vision compliant?

I am trying to understand what does it means by making an LCD display compatible with Night Vision? The aircraft is an old Mirage of 1950's. If I use an LCD display in it's cockpit display unit then ...
9
votes
5answers
3k views

Do jet aircraft have a better glide ratio than propeller aircraft in general? If so, why?

Being fond of aviation, I play with software simulators a lot. I have noticed that while jets seem to be able to glide for a long distance even at zero throttle, propeller aircraft need to be ...
1
vote
2answers
140 views

In a hydrogen fueled plane, could part of the fuel load be allowed to become lighter than air to offset or trim for the load?

This is inspired by How can adverse maneuverability due to a fuel tank behind the rear pressure bulkhead be mitigated in Airbus ZeroE hydrogen plane? . I was thinking, with the cryogenically stored ...
1
vote
1answer
155 views

Can military aircraft send out false ADS-B tracking information?

Can most military and VIP aircraft out of Andrews AFB transmit false ADS-B signals? Here is the ADS-B tracking of Navy P-3 Orion that seems to be violating Iranian air space tonight if the ADS-B is ...
0
votes
0answers
95 views

Landing at 30,000 ft [duplicate]

Excluding how a runway would exist at 30,000 ft, could landing a plane at that altitude be done? What would it take to do so? Very Basic Wind rose for Mount Everest Weather Phenomena That Could ...
1
vote
1answer
86 views

How can a small ducted fan produce a large amount of thrust?

This 15.2 cm ducted fan by Schuebeler can produce 175 Newtons of static thrust. How is this possible in such a small diameter? If this seems normal, then why and how can this ducted fan produce that ...
2
votes
2answers
461 views

How can adverse maneuverability due to a fuel tank behind the rear pressure bulkhead be mitigated in Airbus ZeroE hydrogen plane?

Airbus recently announced three concept aircraft for commercial use, powered by liquid hydrogen, with an ambition to have the plane in operation by 2035. https://www.airbus.com/innovation/zero-...
-4
votes
0answers
104 views

Strange wing size of Wikiwand De Havilland Canada Dash 8 - Is too short and too “flat”? [closed]

Inspecting several photos of "De Havilland Canada Dash 8" , I noticed that the wing width is very small and the wing looks very thin (airfoil is near flat). Edit: In other words, my ...
12
votes
2answers
2k views

Has the construction team of the Northrop Grumann B-2 Spirit made use of the features of the German Horten Ho 229?

1) 2) In the first picture, we can see the German-made Horten Ho 229. See also this video. The second picture shows the American-made Northrop Grumman B-2 Spirit. See also this video Clearly, both ...
1
vote
1answer
55 views

Why is there a pitching moment at aerodynamic center?

As far as I know, the pitching moment is an aerodynamic moment and is related to the aerodynamic center. But I am confused with the following figure, which shows the aerodynamic force applied at the ...
2
votes
3answers
1k views

What powers the air-conditioning on commercial planes?

I expect the APU powers many but are other power sources used like the main engines?
1
vote
1answer
70 views

Are any flight schools or clubs in Canada using Pipistrel's Alpha Electro or Velis Electro?

I'm interested in the business and environmental possibilities of using electric trainers for training. Are there flight clubs or flight schools training with electric aircraft? I thought I'd read ...
0
votes
1answer
132 views

“Turn right, report heading”?

I can't say anything about authenticity, but here is a quote Tower: “Delta Zulu Romeo, turn right now and report your heading.” Pilot: “Wilco. 341, 342, 343, 344, 345…” Is such an instruction even ...
0
votes
2answers
123 views

On large aircraft, why do flaperons not run the full length?

This is a 777 flaperon. It looks rather tiny, compared to the flap. There have been air disasters where the airplane rolled uncontrollably for one reason or the other. It seems to me that a larger ...
1
vote
2answers
133 views

Is there an advantage to combining trim function with yoke?

SUMMARY: What if the yoke didn't require constant pressure, as is the case with the current "trim" function? In all cases that I know of, airplanes have had the yoke (which you need to apply ...
0
votes
0answers
19 views

How can we calculate Centre of pressure of an airfoil from given co-efficient of pressure of taps and chord length? [closed]

Known data : Co-efficient of pressure of all the taps on top and bottom of the airfoil. Chord length. Wing span. x - distance from the leading edge to the pressure taps.
-6
votes
0answers
46 views

Is this an accurate forecast of Defcon levels? [closed]

This is based on peak oil. Permain shale.
1
vote
3answers
144 views

Is using a VOR considered IFR or VFR?

As the title mentioned. And also, is using it in zero visibility (or near) a real life scenario?
1
vote
2answers
54 views

I received a 1st Class medical certificate in May 2005. Do I qualify for BasicMed?

One of the requirements for BasicMed is: Comply with the general BasicMed requirements (possess a U.S. driver's license, have held a medical after July 14, 2006). I received a 1st class medical ...
0
votes
2answers
106 views

Does the F-16 have a movable inlet?

Does the F-16 have a movable inlet? Everything else like the f15 has it does the f16?
0
votes
1answer
28 views

Query regarding sensor and maintenance logs of aircrafts(fighter jets and commercial aircrafts)

I was wondering what the sensor and maintenance logs in an aircraft looks like and what are values logged? like maybe the engine temperature, altitude, Exhaust temperature, etc. I know the data is ...
6
votes
3answers
250 views

Does the F-4 Phantom use (have) differential horizontal tail deflection?

Is differential horizontal tail deflection used to roll the aircraft around the longitudinal axis along with the ailerons / spoilers and a bit of rudder?
1
vote
0answers
66 views

Are there any autoland capable aircraft without autothrottles?

While reading the question Why couldn't the CRJ100/200 be equipped with triple-string autoland? I thought the CRJ cannot have autoland because it is not equipped with autothrottles. Somehow I ...
1
vote
1answer
62 views

What does the ACARS Weight and Balance Request page look like?

In the ATSU AOC Preflight menu of an Airbus (maybe Boeing too), there is an option for a weight and balance request. The selection name varies by airline but it may say "W/B Req" "Send ...
1
vote
1answer
96 views

Why couldn't the CRJ100/200 be equipped with triple-string autoland?

The gold standard for zero-visibility ILS approaches and landings is a triple-string autoland system, where the signals from the localiser and glideslope beams and the aircraft's radioaltimeter ...
9
votes
4answers
1k views

Is it at all possible (or safe) to pursue a pilot's license with a history of mental illness? [duplicate]

I am in my late twenties. To put it bluntly I have a history of mental illness going back to my teens. My quick summary: Diagnosed with depression and prescribed Wellbutrin in my teens. I ...
2
votes
4answers
296 views

Why so much throttle work on navy fighter during final approach?

• Look at his left hand: why so much throttle work while flying? What is he doing? • Is the throttle response very slow? It seems to me that the fighter don't accelerate so much when he gives full ...
1
vote
1answer
67 views

Factors to be considered when re-engining aircraft

What parts of the aircraft need to be adjusted / refitted / added when fitting new (different type) of engines? Also what what kind of re-certification regarding airworthiness etc. will be necessary?

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