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Questions tagged [wind]

The flow of air with respect to the ground. This will affect the performance and handling of aircraft and can be a limiting factor.

2
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2answers
270 views

How do I calculate the required heading for an aircraft carrier with an angled deck to sail into the wind?

The natural wind is from 360 degrees at 10 knots. The desired relative wind down the angled deck is 10 degrees left of the ship’s heading at 30 knots. What heading and speed must the carrier go?
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2answers
101 views

Is drag higher when flying in a crosswind?

Is this true that during a flight with a crosswind the drag increases due to the fact that the relative wind blows at a certain angle to the aircraft's nose but not precisely in the opposite direction ...
2
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1answer
110 views

With wind, what will a perfectly circular flight path relative to the surrounding air look like from the ground? [duplicate]

Let's suppose that an airplane flying at a uniform airspeed follows a perfect, level, closed circular trajectory with respect to the mass of air. Now, seen from the ground, and in the presence of a ...
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4answers
149 views

Does the headwind component change noticeably when transitioning from a crab to a slip on short final?

I don't know if I'm overthinking this, but it has been causing a bit of confusion in my head. Knowing that the headwind component affects the angle of climb/descent, I was wondering how it affects ...
37
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8answers
15k views

How safe is the Boeing 737-800 in high winds?

I'm not good with flying. However, on Wednesday morning I'm flying from Gatwick to Bergen, Norway, traveling alone with two young children. I'm trying desperately to not show my kids how afraid I am ...
4
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3answers
181 views

Why does the angle of descent increase in a constant headwind while decreases in a sudden encounter with a headwind, in a descend?

I'm currently studying aerodynamics. I have realized that a sudden encounter with a headwind during descent will result in the aircraft generating more lift, thus angle of descent decreases. I haven'...
2
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1answer
148 views

What can cause a sudden jump in Indicated Air Speed?

My aircraft heading is 321 with constant Static pressure, wind speed and steadily increasing Ground Speed. Meanwhile, there was a sudden jump of 10kts in IAS from 140 to 150 kts withing a span of 1 ...
13
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1answer
3k views

Why is the flight duration of the same flight different in different months? [duplicate]

For example: CX880 (HKG TO LAX) takes 13h40m on the 2nd of August, but only takes 12h50m in September. CI008 (TPE TO LAX) is the same; it takes half an hour less in September than in August. What ...
2
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1answer
104 views

Why changes the lift during turning with sidewinds? Why is there relative wind in the wind-frame?

I started doing some simulations with XPlane and could observe a very interesting effect when doing turns in the presence of constant wind: All simulations are done with the XPlane Cessna 172 (?) ...
0
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1answer
208 views

Is the distance to PNR (point of no return) affected by wind?

Is the distance to PNR (point of no return) affected by wind? I did research it and found some links, but none discussed about the wind.
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3answers
310 views

Why is it 'aileron right and elevator up' with a front-right wind in a tailwheel airplane?

Question: How should the flight controls be held while taxiing a tailwheel airplane into a right quartering headwind? Answer: When taxiing a tailwheel airplane into a right quartering headwind, use ...
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2answers
318 views

Could a blimp maneuver using a sail? [closed]

How do you build a sail for a blimp/hybrid airship and what would it look like? Similar to a sail boat how could a blimp maneuver without propellers? Can a blimp sail against the wind? Wind can travel ...
6
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2answers
212 views

How would a low-airspeed fixed-wing drone be designed to reduce effects from gusts and wind shear?

In a story I am working on, the characters need a fixed-wing drone that can rendezvous with a blimp, where by "rendezvous" I mean "come within a very short distance at low relative airspeed". The ...
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0answers
48 views

If the speed of wind at ground is 200 kn, could an Airliner land vertically if it's course is opposite to the wind's direction? [duplicate]

I'm not a pilote and my field is programming, but I was thinking about that question: If the speed of wind at ground is 200 kn (just an example), could an Airliner land vertically (per reference to ...
2
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2answers
1k views

What are the effects of headwind strength on landing?

Assuming a direct headwind with zero crosswind component, what are the effects of landing into say a 10kt vs 30kt vs 50kt headwind? Are there any specific advantages or drawbacks to a stronger ...
2
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1answer
83 views

What is the relationship between mountain breeze and air pressure?

I am studying for my PPL and am having some problems understanding the mountain breeze phenomenon, especially when it comes to my understanding of pressure. Basically, I've read that during the day ...
2
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2answers
661 views

How do I calculate the landing distance in a landing chart with tailwind?

With the following chart I can calculate the landing distance with the headwind, gross weight and altitude. The charts uses headwind component, but how can I calculate the landing distance required if ...
4
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1answer
1k views

Why do the jet turbines spin while the engines are turned off?

Why do the jet turbines spin while the engines are turned off? Is this as a result of the wind? Or are the turbines deliberately spun using the APU? If so what is the reason behind this?
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1answer
758 views

Do airplanes have a maximum headwind gust component when landing?

An aircraft POH generally gives a maximum demonstrated crosswind component but I have not seen any indication with regards to maximum gust component. I understand that one is supposed to increase the ...
2
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2answers
343 views

Does wind provide lift for hang gliders in the air?

Basically, if there are no thermals, but a strong wind, is there a way to use that wind to gain altitude?
1
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1answer
904 views

Do I use true or magnetic north in headwind component calculations? [duplicate]

For the landing performance calculations, I want to calculate the headwind component. I can do this with the runway heading and the reported wind direction and speed. But do I need to make any ...
9
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2answers
286 views

What type of airspeed are wind speeds given in?

When you get wind speed from an ASOS/AWOS or from ATC, are those speeds in true airspeed? Are the instruments weighted for elevation? Say you're on approach to 05R at MEX and you're given wind speed ...
22
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7answers
3k views

Does a sudden drop of the velocity of the headwind affect the airspeed by lowering it?

I had a discussion about air speeds with one of my instructors recently. He is claiming that there is a sudden drop in the wind velocity as you get closer to the ground (which is absolutely true, due ...
11
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2answers
3k views

Why would a commercial flight be landing with a tailwind?

I just flew into BOS on flight 2539 and we landed either on 22R or 22L even though winds were 19 knots at 010 at the ground and 14 knots at 300 at 3000 feet. There was no change either; the captain ...
12
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1answer
930 views

On a calm day, what determines the active runway?

When the winds are "calm" or variable, and as such there is no wind direction on which to base the decision on what the active runway should be, how is that determination made?
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8answers
9k views

Why might an airliner fly a large U-turn before landing?

I was on a flight1 from San Antonio, TX to Toronto and, when arriving in Toronto, the plane went quite a way past the airport, made a big U-turn, and then landed. We were coming from the west. I ...
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2answers
1k views

Is it easier to take off against the wind or with it? [duplicate]

I was wondering if it would be better to take off into the wind because then you would need less overall acceleration to takeoff, or with the wind behind you - thereby making it easier for the plane ...
5
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4answers
1k views

Can this design provide more lift force than thrust from engine?

The problem is depicted in the picture: Generally, why we don't use engine blow wings to fly? Can we use wind-tunnel-like wing to generate lift force? Can it generate more lift than thrust? If it ...
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0answers
214 views

I need to know how to calculate drift with a Jeppessen CR-3. Can someone help?

In my exams we are not allowed to use E-6B, just a CR-3 jeppessen flight computer and I'm having serious issues calculating W/V from other parameters like TAS/GS and HDG/TRACK. Example: Q : Given: ...
0
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1answer
253 views

landing with east to west wind on runway 11/29 [duplicate]

i was wondering if anyone could help me out with this doubt i have. the kananga airport in dr congo has a single runway labelled 11/29. upon checking on google maps the number 11 is on the left end ...
2
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1answer
251 views

How can avionics detect tailwind? [duplicate]

We can see the effect of the tailwind on the plane's flight direction on the modern military fighter jet huds. I wonder about how can the avionic systems detect tailwind and which sensors using in the ...
16
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2answers
4k views

How is wind measured at this small U.S. airport?

While launching gliders at Front Royal, VA (KFRR) over the weekend, a fellow pilot and I got curious about the airport's weather equipment. We know that KFRR has local equipment to measure wind speed ...
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7answers
5k views

What happens if you take off with a direct tailwind?

What happens if you take off with a direct tailwind?
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2answers
522 views

How can seagulls slide in the wind without flapping their wings?

There are a lot of seagulls in a park near where I live. Sometimes I can see them somehow "sliding" forward or backward diagonally when flying against the wind, however, their wings aren't flapping. ...
3
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1answer
283 views

What is the constant in this formula for additional lift?

Let’s consider the case of a plane flying s/l in a headwind with a positive gradient. A wing produces lift by inducing a bound vortex superimposed on the relative wind., and in the particular case of ...
0
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1answer
188 views

How are north and east compents of the wind calculated, given a wind speed and direction? [closed]

I have a wind speed and wind direction of an aircraft. I need to find wind component along the true North axis and East axis. Can anyone explain me how to do that? Say wind speed is the hypotenuse ...
2
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1answer
209 views

Is this calculation for the 'free' climbing speed when flying in a headwind with a gradient correct?

From energy considerations, it can be found that a plane flying straight and level, if it enters a headwind with a positive gradient, will climb, extracting energy from the wind gradient. The extra ...
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2answers
473 views

How is the climb/descent performance affected by wind gradient?

I am exchanging opinions with other pilots concerning climbing and descending with a wind gradient, and I'm facing strong opposition... In my opinion, a plane trimmed for S&L flight, if it ...
1
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0answers
196 views

Why airliners fly so high even when winds are more suitable at a lower altitude? [duplicate]

While playing a flight sim, I noticed West winds were very strong at levels >FL350 and weaker around FL270 above the US. I took a look at Flight Radar 24 to see at which level actual airliners were ...
0
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2answers
451 views

How can I consider a UAV thrust power for wind effects?

Sorry that I can't write English well. I was wondering how can I consider a UAV thrust power for wind effects. Assuming a wind velocity of -7 m/s, uav velocity of 10m/s and the stall speed is 10 m/s....
4
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1answer
3k views

How can the wind speed and direction be calculated from on-board measurements?

I am currently learning C++ on my own in my spare time. I am writing a little application that will help me while at work. I have come across a situation where I have some given values, but im not ...
2
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2answers
139 views

Does object mass have a significant bearing on wind interference?

I'm learning to fly RC quadcopters, and before I go outside with an expensive, possibly dangerous (if it were out of control and hit something) large unit, I've decided to practice flying for a while ...
4
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1answer
1k views

How to calculate W/V from true HDG/TRK/GS using a CRP-5 flight computer?

I am currently studying for my EASA ATPL (airline transport pilot license) and one of my subjects is General Navigation. I have stumbled across this question (picture) that has completely stumped me, ...
3
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2answers
925 views

How are extreme winds aloft handled and how do they affect flight?

I'm looking at forecasted winds aloft on SkyVector for early next week. Specifically, I'm looking at the Pacific Ocean (routed between California and Hawaii) and notice that there are some barbs ...
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6answers
8k views

How do head- and tailwinds affect airspeed?

I'm sure this was asked somewhere, I just can't find it. So if it's a dupe, let me know. Anyway, I'm one of those guys that actually looks at the flight information when I'm flying. I fly ...
6
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1answer
2k views

How to calculate the wind variation?

Given the: True Heading = 070 degrees True Track = 061 degrees True Air Speed = 120 knots Ground Speed = 118 knots what is the wind variation? these are the steps I am taking to calculate the ...
6
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2answers
2k views

Why would METARs and ATIS both report exactly the same wind direction?

I understand that METARs report wind direction as true and ATIS reports it as magnetic. But at Camarillo (KCMA) both are reporting the same wind direction and speed even though the magnetic variation ...
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1answer
598 views

How does headwind influence the results of a pitot tube and therefore the airspeed indicator?

What I know so far I recently read about pitot tubes and their use in aircraft. For the basics I consulted Wikipedia, and also went through the definitions for airspeed, groundspeed, and the various ...
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1answer
82 views

Nemesis Champion Racer [closed]

The Nemesis Formula 1 racer is a small plane 1991 to 2000 champion setting a lot of speed records. It went over 260mph, it was fast for its size and engine. Its fast wing helped it fly fast. How ...
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1answer
1k views

How do pilots clear an aircraft to fly through a hurricane?

This video shows a pilot (Tim Gallagher/NOAA) flying what looks like a small jet into the eye of hurricane Matthew by Miami. It's clear that it is quite an interesting ride. The (small) caption states ...