Questions tagged [maneuver]

Questions about controlled changes to the flight path or a series thereof.

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11 votes
1 answer
1k views

Can TCAS and GPWS work at the same time?

A manoeuvre to avoid a collision with terrain, might put you onto a collision course with traffic above you. Can TCAS and (E)GPWS work at the same time? Are they coordinating?
11 votes
1 answer
4k views

Why is this commercial plane making this manoeuvre?

The plane going in circles above my head for an hour now, what could it be?
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11 votes
1 answer
534 views

How do water bomber pilots deal with the changing forces and mass when scooping water?

How does a pilot flying the scooping maneuver in a CL415 firefighting plane deal with the changing forces from taking on such a large mass of water (nearly 50% of the plane's own mass) as quickly as ...
3 votes
2 answers
441 views

Do fighter jets experience angles of attack greater than stall when initiating a zoom climb?

I was just wondering that the fighter jets like F-16, F-35 and Rafale when they are doing a steady flight at a certain airspeed, try to rotate 90 degrees and aim to obtain a vertical motion, so does ...
0 votes
3 answers
189 views

Forward slip dynamics

I am perplexed on the dynamics of the forward slip. I am illustrating here: The intended ground flight path is axis +y, and the plane is forward slipping by banking right + left rudder. In order to ...
0 votes
2 answers
269 views

How to find Radius of Turn given groundspeed and bank angle? [duplicate]

How to find Radius/Rate of Turn given groundspeed and bank angle? Is GS/bank angle one of the formulas? What are the formulas needed for Turns Around a Point? I'm trying to find a way to explain this ...
0 votes
3 answers
304 views

Why do fighters not use thrust burst from under the wings for improved maneuvering?

This is just a postulation upon a few thoughts. I think it is intuitive to understand that in fighter jets, in a dog-fight scenario, higher turning speed, as in closing the angle between the chasing ...
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2 votes
1 answer
126 views

How does maneuver g-load affect drag?

High-performance jets can use high-g turns to scrub airspeed and energy (e.g., in run-and-break landing patterns). What is the relationship between the aggressiveness of a turn and the rate of ...
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2 votes
1 answer
458 views

Other than fighters, which airplanes can fly straight up?

I would think, for example, all modern fighter jets can maintain 90 degree climbs due to having thrust to weight ratio greater than one. Are there any other air planes which can do that?
14 votes
1 answer
4k views

Are 0g pushovers in a C172 safe/legal?

I see YouTube pilots do it all the time, but I’m wondering how safe this maneuver really is given the fuel is a gravity fed system. Also, is it legal?
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4 votes
1 answer
983 views

Steep turn: do we need rudder once we rolled into a bank angle?

Say a Cessna 172 is in a cruise level flight and clearing turn is just finished. I barely feel a left-turning tendency during the level flight (Maybe torque and slipstream are less significant). I ...
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3 votes
2 answers
378 views

Why do airplanes start descending when we initiate a left turn?

Today I watched a video about the Fly-by-Wire (FBW) system (see below) and at 3:20 there is a left turn initiated in a Cessna 152. Then it is shown that with a left turn (only by ailerons), in ...
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0 votes
3 answers
255 views

What would be the challenges for a pilot taking off into a headwind of just under the clean stall speed?

If a strong and fairly steady headwind was coming down the runway at just under the stall speed for a clean configuration/weight, what challenges would a pilot face? Or would it be fairly easy? Is ...
-1 votes
2 answers
198 views

Why does a Thrust Vector Control System increase maneuverability?

So why can a thrust vector control system increase my maximum g-load capacity? Because still n=L/G is relevant and if I can not provide enough lift (pointing up) to counter balance the thrust (...
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6 votes
1 answer
466 views

Is a forward slip considered a "normal maneuver" under 91.175(c)(1)?

After an instrument approach in IMC, 91.175(c)(1) requires, among other things, that operations below the DH or MDA must allow for a "normal rate of descent using normal maneuvers." Can ...
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0 votes
2 answers
140 views

What control surfaces do I need to move to do a roll in a model aircraft?

Figured that this was the better site to ask than drone SE, but if I'm wrong just let me know. I'm making a spitfire model and was just wondering how do I do a roll? I have elevator, rudder, and two ...
0 votes
3 answers
246 views

Roller Coaster Airline

Could an airliner legally (using a common regional jets or less likely airliners) and safely perform acrobatic maneuvers that would otherwise not be permitted for commercial passenger flights. Why? ...
86 votes
1 answer
8k views

What is this plane flying in overlapping circles pattern doing?

I have seen this Beechcraft Super King Air coming from France near Valenciennes and flying in circular patterns over a zone of Belgium for 2 days in a row now. What is it doing, some kind of aerial ...
1 vote
2 answers
195 views

How close would another aircraft have to fly to warrant a sudden big altitude drop to avoid collision

This morning I read that mulitple people got (light) physical injuries after a passenger flight had to forcefully drop its altitude quickly in order to avoid collision with a fighter jet. The news ...
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4 votes
2 answers
831 views

What are the forces present in a coordinated turn?

During straight and level flight, coordinated flight is assumed when there is no net lateral force (no slip or no skid). But this concept totally breaks down when it comes to turning, in a co-...
20 votes
6 answers
7k views

Can a plane bank without turning?

Can planes bank without turning, and if so, how is it possible? A plane's wing is designed to naturally create lift; the explanation for that is that the greater speed of the air moving over the wing ...
1 vote
2 answers
1k views

Forces in a slipping turn [duplicate]

I have trouble understanding why the ball (on the turn & slip indicator) falls into the turn e.g. drop to the left when aircraft is rolled left, when in an uncoordinated turn (slipping turn). What ...
8 votes
6 answers
7k views

What exactly is a "coordinated" turn?

I am wondering what turn coordination really means and what makes a turn uncoordinated? I know that when the turn is coordinated, there is no slip and skid, an aircraft is flying a perfect circle ...
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15 votes
5 answers
7k views

Why did my LGA-ORD flight make an S-shaped turn round the time it was passing a storm?

On a recent United UA1709 flight into Chicago (hit by a heavy storm at the time), I felt a noticeable descent, combined with two wide banks around 1 hour before landing. Looking at the flight path, I ...
1 vote
3 answers
659 views

Is there a method for calculating change in V-speeds with a change in weight for a Cessna 172?

For example, what would the rotation speed (Vr) and stall speed (Vs) be at maximum takeoff weight versus flying with a single occupant? (2297 lb vs 1807 lb)
3 votes
3 answers
602 views

How to determine the traffic avoidance manuver?

Scenario A: I started the takeoff roll and then noticed another aircraft is crossing the runway in front of me, how could I determine what is the best avoidance maneuver, like full braking to abort ...
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7 votes
2 answers
2k views

What does it mean to move a single flight control to its full deflection?

It is the speed below which you can move a single flight control one time, to its full deflection, for one axis of airplane rotation only This is part of the explanation of maneuvering speed. What ...
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4 votes
4 answers
2k views

Why did this aircraft do a ‘spiral’ before landing?

There was this WizzAir flight two days ago, from BUD to PMI, and right before landing it did a ‘spiral’ like maneuver. I’ve attached a screenshot. Why did it do that? It looks strange.
0 votes
1 answer
1k views

Why limit the bank angle to 10° when passing through FL300 on a B737-800?

When passing thought FL300, we are instructed to set the bank angle limiter on the MCP to 10°. I know one of the reasons for this is that we are thrust limited so maneuver capability decreases. Are ...
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1 vote
1 answer
268 views

What is the Eights on Pylons maneuver intended to demonstrate about a pilot's skillset?

This maneuver has the common requirements such as clearing the area, and it has the unique requirement among maneuvers to determine the pivotal altitude and select appropriately spaced pylons as ...
57 votes
3 answers
15k views

Did we get closer to another plane than we were supposed to, or was the pilot just protecting our delicate sensibilities?

Yesterday, April 28, 2019, I was flying on Alaska flight 557 from LAX to PDX. About an hour into the flight (near the California/Oregon border) I was looking out the window and saw a jet travelling ...
34 votes
8 answers
11k views

Why do airplanes bank sharply to the right after air-to-air refueling?

Whenever I see videos on YouTube they bank really sharply to the right after disconnecting from the tanker. Why wouldn't they do a more shallow 30-degree bank? See this video for reference:
15 votes
6 answers
21k views

What is the difference between a forward slip and a side slip?

I am having a hard time understanding what differentiates the two types of slip. I understand that in a forward slip, the longitudinal axis is tilted with respect to the flight path, whereas in a side ...
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1 vote
2 answers
278 views

Is an Aileron Roll Easier Done Opposite The Rotation Of The Plane's Propeller?

We all know helicopters have tail rotors because they would spin out of control thanks to Newton's third law. That got me thinking, would a single propeller plane have an easier time doing an Aileron ...
9 votes
5 answers
684 views

Why does elevator input move the turn coordinator ball in steep turns?

When practicing steep turns, I'm running into an unusual phenomenon. If the airplane is losing altitude in coordinated flight and I apply aft stick pressure to pitch up and correct, I notice that the ...
5 votes
2 answers
2k views

What is the derivation of 15 and 11.3 used for estimating pivotal altitude?

Pivotal Altitude Explained: Teaching eights on pylons the easy way at AOPA repeats a common formula for pivotal altitude. To estimate pivotal altitude, square the groundspeed and then divide by 15 ...
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2 votes
2 answers
2k views

What G forces does a pilot perceive in a "1 G" barrel roll? [duplicate]

This is a follow on to an earlier discussion about pilot perception of G forces compared with actual aerodynamic loads on an airframe. Years ago, the Boeing 707 prototype famously did not one, but ...
0 votes
4 answers
605 views

How fuselage creates lifting force when plane flying on a side?

On a question "How plane able to fly on a side" people answer that it's because fuselage shape crate lifting force and plane should have enough thrust. But that seems vague to me. How fuselage creates ...
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4 votes
3 answers
640 views

How do planes respond aerodynamically when bringing them into inverted flight by rolling?

For the sake of the question the plane is fully capable of inverted flight, no problems with engines etc. Background of the question is the observation that the airflow around the wing must also ...
1 vote
1 answer
903 views

Why are the positive points in a V-n diagram associated with pitch maneuvers?

For an aircraft with such flight envelope, the flight conditions in point A, C and D are ...
3 votes
2 answers
1k views

When would a pilot request a "VMC descent" or "VMC climb"?

Can anybody explain what's the point of this and in what kind of situations a pilot needs it? ICAO Doc 9432 "Manual of Radiotelephony" 8.3.3 An aircraft may request a clearance to climb or ...
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8 votes
3 answers
944 views

How did this F/A-18's execute a "low-boom maneuver"?

The Engadget article NASA will publicly test quiet supersonic technology in November says: The administration plans to conduct a series of public tests around the coastal city of Galveston in ...
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3 votes
1 answer
461 views

Why were these Hawkeyes flying in a circular pattern?

A couple of months ago I was near the Wallops Flight Facility in Virginia, when I saw 3 or 4 planes flying in a tight circular pattern. The planes were on the larger side, prop driven and had large ...
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1 vote
1 answer
660 views

Can a plane turn around like on this photo? [duplicate]

I've never seen a plane do such a maneuver, have you? Is this photo just a hoax?
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10 votes
3 answers
2k views

How does turn radius change with velocity between Vm and Vs, as in a 180 degree turn in a canyon?

I just heard a briefing on mountain flying, and it was stated that the first thing, or the most important thing to do in the event you are unfortunate enough to find yourself in a blind canyon with no ...
6 votes
3 answers
1k views

How will a prolonged series of steep turns produce a stall in subsequent level flight?

In Stick and Rudder, the author warns pilots against the unreliability of judging airspeed and hence “buoyancy” — his term for how far the airplane is from aerodynamic stall — by throttle position, ...
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1 vote
1 answer
778 views

Why is this plane flying in such a tight circle?

I was in a car in NYC on 2/18 going from Queens to Manhattan. While going over a bridge I noticed some (what looked to me like) very tight circular contrails in the sky. The plane was still there but ...
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3 votes
2 answers
768 views

During spin recovery, can you just release the yoke/stick to neutralize the ailerons?

I have been watching spin recovery videos on YouTube for the last few days. Scary stuff and I haven't even started flying yet :o haha Anyway, the recovery seems to be commonly described as PARE: ...
6 votes
1 answer
1k views

Why are yaw rate and pitch rate obtained by these equations?

I am reading "Introduction to Aircraft Aeroelasticity and Loads" by Jan R. Wright and Jonathan E. Cooper. The book said: In steady bank turn (as shown in picture below), The rate of turn is given by:...
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10 votes
2 answers
2k views

How does a fighter “thump” an intercepted aircraft?

In P&E Never Again: A Thump on Final, commercial pilot Mike Mercer describes an encounter with an F–16 shortly before rounding out to land. Without warning, the Baron abruptly yawed 15 degrees ...
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