Wingover

Last updated

A wingover (also called a wing-over-wing, crop-duster turn or box-canyon turn) is an aerobatic maneuver in which an airplane makes a steep climb, followed by a vertical flat-turn (the plane turns to its side, without rolling, similar to the way a car turns). The maneuver ends with a short dive as the plane gently levels out, flying in the opposite direction from which the maneuver began.

Contents

Sequence and use

Diagram of a basic wingover Wingover diagram with birds eye view.JPG
Diagram of a basic wingover

The aircraft makes a tight, 180-degree change in heading while covering minimum horizontal distance. The maneuver begins by making roughly a quarter loop, bringing the plane up into a vertical or near-vertical climb, allowing the airspeed to drop. Before the airplane stalls (begins to fall) the pilot applies hard rudder input, bringing the plane into a sweeping, vertical flat-turn, during which the wing swings over the top of the turn toward the direction of the nose. Both the lowered airspeed and gravity provide assistance with the turn, similar to a stall turn (hammerhead turn), except the plane never actually stalls. Instead, as the speed decreases, the plane makes a gentle, 180-degree flat-turn over the top of the climb, then dives to the original altitude along a parallel flightpath, completing a quarter loop to return to level flight at the original speed.

The wingover is an energy-management maneuver. It is often used in dogfighting [ clarification needed ] as an alternative to the split S, when a fast turn-around is needed but a loss in altitude and a change in airspeed is not. Because the aircraft does not roll, it also has the advantage of keeping the cockpit facing the same direction during the turn, allowing the pilot to maintain sight of the opponent. Wingover-type maneuvers are often used to abruptly end other climbing maneuvers, like chandelles and high Yo-Yos, "kicking over" the nose when the enemy shows signs of falling or trying to dive away. [1] One such maneuver was described by P-47 Thunderbolt pilot Major Robert S. Johnson, in an account of aerial combat during World War II:

Habit brought my head swiveling around to look behind me. I was just in time to see a Focke-Wulf bouncing, nose twinkling from the .30 calibers. My left hand slammed forward on the throttle, my right hand hauled back on the stick, my heart went to the top of my head and the Thunderbolt leapt upward. I racked the Jug into a tight left climbing turn, staying just above and in front of the pursuing Focke-Wulf.... To get any strikes on me, the [German] had to turn inside me, and then haul his nose up steeply to place the bullets ahead of me. The Focke-Wulf just didn't have it. At 8,000 feet he stalled out while the Thunderbolt roared smoothly; I kicked over into a roll and locked onto his tail." [2]

The wingover is also a common maneuver during air shows and aerobatic competitions. [3] [4] [5] [6]

Execution

A wingover is typically executed from level flight or a slight bank in the direction of the turn. Lower-powered aircraft may begin the maneuver from a shallow dive, to increase airspeed. The pilot then pulls back on the stick bringing the plane up into a steep climb, typically not exceeding 2 to 3 g's. When the plane reaches a proper attitude (nose position above the horizon), which may be between 60 and 90 degrees, or even past vertical as much as 120 degrees, the pilot relaxes the elevator input, allowing the plane to lose airspeed as it climbs in altitude. Slight rudder will usually be applied at this time to increase the bank. In a vertical climb, the term "bank" refers to the angle of the horizon to the wingline (an imaginary line running through the center of the aircraft at the 3:00 and 9:00 positions, parallel to the wings), and the increased bank causes the fuselage to angle sideways and the nose to try dropping to one side. When performing the maneuver at transonic or supersonic speeds, extra help may be needed in slowing the airspeed, such as deploying the speedbrakes.

When the airspeed is slow enough, the pilot applies hard rudder input with the pedals, bringing the plane into a sweeping flat-turn, as if pivoting on the lower wingtip while the upper wing cartwheels over the top. Because one wing is moving faster than the other, it will have a tendency to impart some roll onto the aircraft, so slight aileron will usually need to be applied during the turn to keep the plane from rolling. When the plane reaches a nose-down bank and attitude, the pilot releases rudder and dives, pulling back on the stick to level the plane out at the original altitude. [7] [8]

Related Research Articles

<span class="mw-page-title-main">Spin (aerodynamics)</span> Aviation term for a corkscrew downward path

In flight dynamics a spin is a special category of stall resulting in autorotation about the aircraft's longitudinal axis and a shallow, rotating, downward path approximately centred on a vertical axis. Spins can be entered intentionally or unintentionally, from any flight attitude if the aircraft has sufficient yaw while at the stall point. In a normal spin, the wing on the inside of the turn stalls while the outside wing remains flying. It is possible for both wings to stall, but the angle of attack of each wing, and consequently its lift and drag, are different.

Visual flight or "Visual Attitude Flying" is a method of controlling an aircraft where the aircraft attitude is determined by observing outside visual references.

<span class="mw-page-title-main">Flight control surfaces</span> Surface that allows a pilot to adjust and control an aircrafts flight attitude

Aircraft flight control surfaces are aerodynamic devices allowing a pilot to adjust and control the aircraft's flight attitude.

<span class="mw-page-title-main">Stall turn</span> Aerobatics turn-around maneuver

The hammerhead turn, stall turn, or Fieseler is an aerobatics turn-around maneuver.

<span class="mw-page-title-main">Slip (aerodynamics)</span> Aerobatic maneuver

A slip is an aerodynamic state where an aircraft is moving somewhat sideways as well as forward relative to the oncoming airflow or relative wind. In other words, for a conventional aircraft, the nose will be pointing in the opposite direction to the bank of the wing(s). The aircraft is not in coordinated flight and therefore is flying inefficiently.

<span class="mw-page-title-main">Aerobatic maneuver</span> Flight path putting aircraft in unusual attitudes

Aerobatic maneuvers are flight paths putting aircraft in unusual attitudes, in air shows, dogfights or competition aerobatics. Aerobatics can be performed by a single aircraft or in formation with several others. Nearly all aircraft are capable of performing aerobatics maneuvers of some kind, although it may not be legal or safe to do so in certain aircraft.

<span class="mw-page-title-main">Cobra maneuver</span> Dynamic deceleration of fighter aircraft

In aerobatics, the cobra maneuver, also called dynamic deceleration, among other names, is a dramatic and demanding maneuver in which an airplane flying at a moderate speed abruptly raises its nose momentarily to a vertical and slightly past vertical attitude, causing an extremely high angle of attack and momentarily stalling the plane, making a full-body air brake before dropping back to normal position, during which the aircraft does not change effective altitude.

<span class="mw-page-title-main">Focke-Wulf Triebflügel</span> 1944 German concept for a VTOL aircraft

The Focke-Wulf Triebflügel, or Triebflügeljäger, literally meaning "thrust-wing hunter", was a German concept for an aircraft designed in 1944, during the final phase of World War II, as a defence against the ever-increasing Allied bombing raids on central Germany. It was a vertical take-off and landing tailsitter interceptor design for local defense of important factories or areas which had small or no airfields.

<span class="mw-page-title-main">Basic fighter maneuvers</span> Tactical movements performed by fighter aircraft during air combat maneuvering

Basic fighter maneuvers (BFM) are tactical movements performed by fighter aircraft during air combat maneuvering, to gain a positional advantage over the opponent. BFM combines the fundamentals of aerodynamic flight and the geometry of pursuit, with the physics of managing the aircraft's energy-to-mass ratio, called its specific energy.

<span class="mw-page-title-main">Barrel roll</span> Aerial maneuver

A barrel roll is an aerial maneuver in which an airplane makes a complete rotation on both its longitudinal and lateral axes, causing it to follow a helical path, approximately maintaining its original direction. It is sometimes described as a "combination of a loop and a roll". The g-force is kept positive on the object throughout the maneuver, commonly between 2 and 3g, and no less than 0.5g. The barrel roll is commonly confused with an aileron roll.

<span class="mw-page-title-main">Immelmann turn</span> Aerial maneuver

The term Immelmann turn, named after German World War I Eindecker fighter ace Leutnant Max Immelmann, refers to two different aircraft maneuvers. In World War I aerial combat, an Immelmann turn was a maneuver used after an attack on another aircraft to reposition the attacking aircraft for another attack. In modern aerobatics, an Immelmann turn is an aerobatic maneuver that results in level flight in the opposite direction at a higher altitude.

The scissors is an aerial dogfighting maneuver commonly used by military fighter pilots. It is primarily a defensive maneuver, used by an aircraft that is under attack. It consists of a series of short turns towards the attacking aircraft, slowing with each turn, in the hopes of forcing the attacker to overshoot. Performed properly, it can cause the attacking aircraft to move far enough in front to allow the defender to turn the tables and attack.

Aircraft upset is a dangerous condition in aircraft operations in which the aircraft flight attitude or airspeed is outside the normal bounds of operation for which it is designed. This may result in the loss of control (LOC) of the aircraft, and sometimes the total loss of the aircraft itself. Loss of control may be due to excessive altitude for the airplane's weight, turbulent weather, pilot disorientation, or a system failure.

<span class="mw-page-title-main">Chandelle</span> Aircraft control maneuver where the pilot combines a 180° turn with a climb

The chandelle is an aircraft control maneuver where the pilot combines a 180° turn with a climb.

<span class="mw-page-title-main">1994 Fairchild Air Force Base B-52 crash</span> 1994 military aviation accident in Washington state

On Friday, 24 June 1994, a United States Air Force (USAF) Boeing B-52 Stratofortress crashed at Fairchild Air Force Base, Washington, United States, after its pilot, Lieutenant Colonel Arthur "Bud" Holland, maneuvered the bomber beyond its operational limits and lost control. The aircraft stalled, fell to the ground and exploded, killing Holland and the other three crew aboard. The crash was captured on video and was shown repeatedly on news broadcasts throughout the world.

<span class="mw-page-title-main">Aileron roll</span> Aerial maneuver

The aileron roll is an aerobatic maneuver in which an aircraft does a full 360° revolution about its longitudinal axis. When executed properly, there is no appreciable change in altitude and the aircraft exits the maneuver on the same heading as it entered. This is commonly one of the first maneuvers taught in basic aerobatics courses. The aileron roll is commonly confused with a barrel roll.

<span class="mw-page-title-main">Radio-controlled aerobatics</span>

Radio-controlled aerobatics is the practice of flying radio-controlled aircraft in maneuvers involving aircraft attitudes that are not used in normal flight.

3D Aerobatics or 3D flying is a form of flying using flying aircraft to perform specific aerial maneuvers. They are usually performed when the aircraft had been intentionally placed in a stalled position.

<span class="mw-page-title-main">Slow roll (aeronautics)</span> Aircraft manoeuvre

A slow roll is a roll made by an airplane, in which the plane makes a complete rotation around its roll axis while keeping the aircraft flying a straight and level flightpath. A slow roll is performed more slowly than an aileron roll; although it is not necessarily performed very slowly, it is performed slowly enough to allow the pilot to maintain balance, keeping a steady flightpath, pitch angle, and height (altitude) throughout the maneuver. The maneuver is performed by rolling the airplane at a controlled rate with the ailerons, and moving the elevators and rudder in opposition, or "cross-controlling," to keep the plane on a steady, level flightpath.

<span class="mw-page-title-main">Falling leaf</span> Aerobatic maneuver

A falling leaf is a maneuver in which an aircraft performs a wings-level stall which begins to induce a spin. This spin is countered with the rudder, which begins a spin in the opposite direction that must be countered with rudder, and the process is repeated as many times as the pilot determines. During the maneuver, the plane resembles a leaf falling from the sky; first slipping to one side, stopping, and then slipping to the other direction; continuing a side-to-side motion as it drifts toward the ground.

References

  1. An Illustrated Guide to Modern Fighter Combat By Mike Spick – Prentice Hall Trade 1987
  2. Fighter combat: Tactics and maneuvering By Robert Shaw -- United States Naval Institute 1985 Page 121
  3. Contact Flying By Jim Dulin -- Lula Press 2005 Page 164--165
  4. "Flying Magazine". June 1933.
  5. Mikoyan-Gurevich MiG-21 Pilot's Flight Operating Instructions By Nato -- 2008 Page 120--121
  6. Douglas A-1H Skyraider Pilot's Flight Operating Instructions By United States Navy 2008 4-16
  7. Contact Flying By Jim Dulin -- Lula Press 2005 Page 164--165
  8. Mikoyan-Gurevich MiG-21 Pilot's Flight Operating Instructions By Nato -- 2008 Page 120--121