why would a helicopter hover in the same position

why would a helicopter hover in the same position

You've got collective, which is the power you're applying to the rotor blades; pedals, which help to balance out the torque on the body of the aircraft; and cyclic, which is able to move the rotors independently of each other for more control. Helicopters may operate from a designated helicopter landing area. This effectively tilts the Main Rotor Disk (When the blades are turning they look like a solid disk) in the direction the pilot wishes to go and the helicopter then follows. Hovering flight The cross sections in Figure 5 denote: the plane far upstream of the rotor, where in the hovering case the air velocity is null (section 0 0); the planes just above and below the rotor Figure 3. I am arguing with globe earthers who claim the helicopter will remain in the exact same spot because somehow the helicopter maintains the same angular velocity and thus increase its tangential speed to compensate for the longer distance it has to travel, while I claim the helicopter would slowly deflect away from it's original position due to. Not only do the system and physics that get the helicopter off the ground differ from a fixed-wing airplane, so too do the pilots controls. Now let's take the turn out of the equation and consider steady hovers in wind that is not "on the nose". The Cyclic really never needs to move more than 1 in any direction to smoothly control a helicopter. Why would a helicopter hover in the same position? It would stay in the same spot, but there might be some apparent rotation of the chooper due to rotation of the Earth. Same Helicopter weighing 4,700 lbs with 10C air temperature: The chart on left shows In Ground Effect = Helicopters max altitude it can hover over the ground is 9,750 ft eg helipad on a mountain. The cookies is used to store the user consent for the cookies in the category "Necessary". * Computer Flight Simulators: Can You Really Learn To Fly On Them? When a helicopter has a delay to the control inputs the student pilot tends to keep pushing more on the cyclic especially, as they are not seeing any reaction to their control input. Why cant a helicopter just hover and let the earth rotate beneath it? First off, if you want to learn how to hover a helicopter, you're going to have to overcome your urge to commit pilot induced oscillation, which basically means constantly freaking out and over-controlling the vehicle to make the whole thing wobble. In a rotary aircraft, strictly speaking, the take-off occurs when the pilot lifts the machine off the ground into hover. A similar method is used to detect illegal drug crop growth in other parts of the world, this time using satellite remote sensing. Aviation Stack Exchange is a question and answer site for aircraft pilots, mechanics, and enthusiasts. This site contains affiliate links to products and services. Once a helicopter engine/s reach their maximum power output the helicopter can hover no higher. Hence, will cost you $6.3 million price tag and the helicopter is fully covered in Versace leather, design and exterior. This is the Pitch Angle of your hand. However, you may visit "Cookie Settings" to provide a controlled consent. Why would a helicopter hover in the same position? It has all the luxury of the famous German sports. As the helicopter reaches 40kts the pilot can begin to raise the Collective to Climb Power and continue to apply forward pressure on the Cyclic to gain airspeed until they reach their optimum climb speed for their particular helicopter. Producing less thrust allows the torque to pull the nose in the opposite direction. Is there a preferred wind direction for a helicopter in hover? Easy right! How the moon takes energy from Earth (if at all)? If the pilot reduces the amount of anti-torque created by the rudder pedals, the helicopter will begin to spin, albeit in a controlled fashion. Also in a no wind hover, the vortex from the main rotor is forced downwards. In reality, helicopters are unstable and require constant minute adjustments from the pilot. In an airplane or Fixed-Wing, the airflow over its airfoils are created by the entire aircraft moving at speed. So why is its vortex to the right? If you turn to the left, the vortex from the front edge of the main rotor is blown backwards by the wind across the tail rotor and causes a decrease in the angle of attack of the tail rotor blades since the wind from the vortex is blown on to the right hand side of the tail rotor. When the Swashplate moves upwards, it increases the Pitch Angle on every Main Rotor Blade at the same time Think of sticking your hand out of the car window as a kid. The helicopter will then hover in place, all things being equal. Wow! Can the Wildfire Druid ability Blazing Revival prevent Instant Death due to massive damage or disintegrate? During hovering and lower speed flight, the main rotor provides the lift and thrust for the . No matter how much they claim. You also have the option to opt-out of these cookies. 2 Why is there a helicopter hovering over my house at night? Reddit and its partners use cookies and similar technologies to provide you with a better experience. How do I remove filament from the hotend of a non-bowden printer? When the helicopter swings one way, the student will place in an opposing control movement and the helicopter will then swing back, but a little further usually because the student put in too much of a control input to correct the swing. When Lift = Weight it hovers. The cookie is used to store the user consent for the cookies in the category "Other. And is wind direction more of a factor when hovering in or out of ground effect? Most helicopters have a fuel capacity that allows it to hover for around 2 to 3 hours. It is actually called a 'transition'. This tilts the Vertical Lift vector in the direction the pilot wants to go and this creates a sideways Thrust vector. Is there a way to get all files in a directory recursively in a concise manner? By the time an instructor has told the student how much to move a control, the time for the input has passed. As far as angular momentum goes, you asked about a helicopter that is hovering above the ground. Trim control can adjust the mechanical feel in flight by changing the neutral An Instructor Weighs in. How Does a Helicopter Stay Pointed in The Right Direction? If Weight is more than the Lift the helicopter can produce, then the helicopter will never leave the ground. To get the helicopter into a stable hover it first needs to generate enough Lift to overcome its weight. For example, if the helicopter begins to move rearward, the pilot must be careful not to apply too much forward pressure on the cyclic because the aircraft will not just come to a stop but will start drifting forward. This simplistic explanation negates the existence of wind, the effects of the rotor blades downwash on the aircraft fuselage, and the differences in atmospheric pressure as the aircraft changes altitudes. Therefore, a lot more left pedal is required as the helicopter turns from 0 degrees (relative to the wind) to 270 degrees. But opting out of some of these cookies may affect your browsing experience. Slightly increase the Collective to bring the helicopter off the ground and maintain heading with Pedals and Drift with Cyclic. The pedals control the Tail Rotor at the rear of most conventional helicopters. If you turn to the right, the opposite happens. This is even more pronounced in helicopters with only two Main Rotor Blades, hinged in the middle like a Teeter-Totter. The two-bladed Teetering main rotor heads are the worst for control delay due to their Zero Hinge Offset design. Giess what? In fact, one of the most common errors of novice pilots is to overcompensate while trying to hover. The heavier the helicopter is, the more power the engine/s have to produce and the more lift the main rotor has to create to overcome that weight of the aircraft. This drag will try to slow down the rotational speed of the rotor blade and to maintain the helicopter rotor system at the desired RPM, the engine/s also increases power to overcome the drag.When the Collective is raised, it raises the Swashplate to increase the blades Pitch Angle and it increases engine power through a linkage or digital engine control input. Large Cyclic movements make the helicopter dance which will certainly be noticed by passengers or create a swing in the external load that is slung underneath the helicopter. For any of you that have tried to do this, you will know how hard it is! Those links do not address the question at all. As the rotor rotates counter-clockwise, the torque reaction on the fuselage wants to turn the nose to the right. Can a hovering helicopter travel half the globe in 12 hours? The primary effect here is the tendency of the fuselage and vertical stabiliser to "weather cock" the aircraft. But we dont because our atmosphere is in motion at the same velocity as the Earth. The helicopter loses angular momentum and air cannot perfectly conserve its angular momentum. I may receive a small, no-cost-to you commission for any purchases made through these links and it really helps to maintain this site. Certified Flight Instructor-Airplane, Single and Multiengine Instrument, Cross Country Flights Definition and Requirements, The 15 Best Attack Helicopters in the World, The 8 Types of Military Helicopters (with 16 examples). When the pilot wishes to turn the helicopter to the right, they push on the right pedal and this decreases the Pitch Angle on the Tail Rotor Blades which creates less Thrust. Police helicopters fitted with infrared cameras can fly over fields and national forest areas to detect any illegal cannabis crop growth from the air. All of this said, it's a standard part of training to learn how to hover in these conditions and how to maintain constant rate turns. The tail rotor is no different to the main rotor, it just operates in the Y axis rather than the Z axis and is subject to vortex ring state. At night the police helicopter will normally only fly if there is an ongoing incident that requires air support. Without the tail rotor, the helicopter would spin out of control. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Are tourist air travel helicopters allowed to turn off all their lights at night for photographers, I know military helicopters turn off their lights in war zones, but surely theyre not allowed near an airport of a capital city? This can lead to the loss of tail rotor effectiveness or even a stall of the blades as the angle of attack exceeds the critical angle. To move without slipping, you can imagine a column of air stretching upwards; to prevent slipping of air layers, this means that this column always has to move with the surface at the same pace. How do you identify neurotypical disorders? The atmosphere is basically moving along with the planet at the equator. Before we go jumping into how it gets off the ground we need to dive into some very basic aerodynamics that allows the helicopter to do its hovering party trick! Did anybody use PCBs as macro-scale mask-ROMS? In a helicopter or Rotary-Wing, the airflow over its airfoils is created by rotating each airfoil through the air. We are graduating the updated button styling for vote arrows, Statement from SO: June 5, 2023 Moderator Action, Physics.SE remains a site by humans, for humans. Slightly raise the Collective to maintain height. Things are not equal in the real world, of course. The first part of understanding how to drive a helicopter is knowing what the three main controls do. It is most noticeable with the Cyclic control. This can take anywhere from almost instantaneous to a second or two depending on the helicopter type, but when a student pilot is wrestling with the helicopter, this delay is what will cause the Overcontrolling. The Swashplate is an ingenious device that allows the aircraft control linkages to transmit their movements into the rotating parts of the Main Rotor System and its rotor blades. Helicopter Engine Failures A Pilot Properly Explains! All rights reserved. rev2023.6.8.43485. To help make hovering even more of a challenge there are several other factors that get thrown into the mix: Mother Nature can really be a cruel lady, at least that is what it can feel like when you are first learning to hover. Now that we have a basic understanding of what components create the Lift we also need to look at three other forces that act on any aircraft when in flight: This is the force an aircraft must generate to overcome Weight. If the atmosphere were stationary relative to the movement of the Earth, we should have felt a 1600 km/h wind on the equator. Does anyone know which story of One Thousand and One Nights the following artwork from Lon Carr illustrates? Turbulence can make for an uncomfortable ride in any aircraft, but it's the sudden changes to vertical rate and airspeed that are critical to safe flight in a helicopter. Just like the Collective and the Cyclic, to stop the movement the pilot will need to apply the opposite pedal to slow and stop the rotation, then center the pedals to neutral to maintain the helicopter pointing in the desired direction. 2.1. What does it mean when a helicopter is circling your neighborhood? As when landing is it preferable to point the nose into the wind? Apply slight forward pressure on the Cyclic and hold it there. But once you master hovering in wind and learning to smoothly maneuver the helicopter in wind then flying in calm conditions is simple! In a way, we can also refer to this idea as conservation of momentum. 270 - 0 degrees. It reaches a top speed of 178 mph (286 km/h) and has a range of 473 miles (761 km). It Depends! The key to controlling a helicopter in a hover is to make the control input and wait. NOTE- Ground taxiing uses less fuel than hovertaxiing and minimizes air turbulence. To get an aircraft into the air the Lift created must be greater than Weight. If you have never taken the controls of a helicopter in your hands before I highly recommend you go and book yourself a trial lesson at your local school and have a go. I did a google about this. If the pilot applies just enough thrust into the direction of the wind, the aircraft should remain motionless. I think this is why it feels like such an accomplishment once they get the hang of hovering. Now things start to get interesting. Originally Answered: Why do police helicopters fly in circles at night? By using the HOGE chart, because its a winch operation, the pilot starts on the left axis at 10,000ft and goes across to the +10C curve. Airports get assigned their names based on a worldwide international standard. Any deviation not caught immediately can lead to a loss of control. Can someone hack my PC through online games? (let's say about 15 kts). First, the pilot increases the collective until the rotor disk generates enough lift to get the craft off the ground. This happens because the rotor is sitting in a funnel of downward flowing air, generated by its own rotor! Allow the helicopter to rise to approximately 5ft above the ground. 982 davidstuart 12 yr. ago The vortex from the tail rotor is to the left. Therefore I would be able to hover for 2h40 minutes before I needed to refuel. Once you're floating in the air hovering above the surface, maintaining that does not require any more force, because the air around you is also travelling across the surface at the same speed the Earth is rotating. The top speed is 178 mph, but the range is just 395 miles. Slowly start raising the Collective until the helicopter begins to get light on its skids or wheels. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. The lighter a helicopter is, the higher it can go before the engine/s or the main rotor reaches its capable limit. The answer is - NO, you cannot have an airplane go straight up and let the Earth pass underneath to reach your destination, unless you are willing to burn an incredibly large amount of fuel and make the journey downright uneconomical. The Thrust from the Tail Rotor will try to push the helicopter to the left. Left: Two DHS aircraft patrol the U.S. border; Center: DHS helicopter, with cameras beneath the cockpit door; Right: Cessna 208, operated by an FBI front company In June of last year, the Associated Press reported that it had linked more than 50 planes, mostly small Cessna Skylane 182 aircraft, to 13 fake companies created as fronts for the FBI. Because staying in the same position or hovering for a helicopter actually means staying still in relation to fixed points on the ground and moving with the Earth as it rotates. I don't think that is the effect you are thinking of, or the other person is discussing though. But they are cheaper to manufacture, have fewer parts and maintenance is simpler leading to a lower run-cost. As you can see, by being closer to the ground the helicopter is able to hover at a higher altitude because of the performance increase created by the rotor system when near to the ground. A good pilot will be able to move the helicopter without the passengers ever seeing the Cyclic move. This is the only part that is conventionally called a take-off. It is by varying the angle of attack of the tail rotor that we can change the amount of thrust from the tail rotor and therefore have yaw control. The prices vary exponentially if you plan on decking the interiors with gold or crystal. And since the atmosphere is also moving with the earth, there's no 1000 mph wind either. Well, the most common reason why helicopters might be flying over your house is either because your residential property is over a military flight path, or law enforcement has a good reason to do so. It usually takes around 10 hours for a student to begin mastering the hover. Price ranges from $1.8 to $3 million. New comments cannot be posted and votes cannot be cast. Consider a heavily loaded helicopter hovering in a . If the helicopter is yawed right, the tail moves left and the tail rotor moves into it's own vortex causing a reduction in angle of attack and therefore thrust. I found this FAA doc on helicopter handling with a bit more stuff: https://www.faa.gov/regulations_policies/handbooks_manuals/aviation/helicopter_flying_handbook/media/hfh_ch09.pdf. Learn more about Stack Overflow the company, and our products. When the pilot sitting in a helicopter which has a main rotor that turns Anti-Clockwise wishes to turn the helicopter to the left, they push on the left pedal and this increases the Pitch Angle on the Tail Rotor Blades which creates more Thrust (Thrust is similar to Lift but in a horizontal direction). effective translation lift. If the desired result is not enough another small control input is required. That ideas going to play a big part in answering your question. Does a helicopter that simply hovers remain in the same spot on earth? Therefore the list of top 10luxury helicoptersis given below: The Koala is chiefly used by law enforcement, but it can easily provide accommodation to a group of corporate directors traveling on business. Do helicopters have to have lights on at night? The pendulum effect is mainly exacerbated by the next factor Overcontrolling. The Koala reaches a top speed of 166 mph (267 km/h) and a range of 618 miles (995 km). Hovering a helicopter is commonly described as being like trying to pat your head and rub your stomach at the same time. The AW139 is appropriate for law enforcement, armed patrol and firefighters. It can seat as many as 13 passengers; this spacious EC 155 aircraft will cost you $10 million. However, because of their designs, helicopters will tend to "weather-cock" in the direction the wind is coming from due to the CP-CG relationship. By inputting the temperature and altitude it will tell the pilot the maximum weight the helicopter can be for that operation: A helicopter needs to complete a winch rescue at 10,000ft and the computed temperature there is +10C. As the helicopter increases lift to take off, the pilot will have to gradually add anti-torque pedal to counteract the extra torque. Flat-Earthers claim that we cannot do such a thing as proof of a motionless Earth. How long can a helicopter stay in one place? So now that each control is mastered here comes the punch you never saw coming. Since the helicopter is also sitting on the ground, it's also inside this moving reference frame, and has the momentum that goes with it so the helicopter is also moving at one revolution per day. This may sound easy, but it requires tremendous experience and skill. I think you are technically correct, that it will deflect from it's original position, but it seems like it is not for the reasons you are describing. Motion is conserved. Fourier transform of a propagating Dirac delta. He or she accomplishes this by locating a fixed point outside the cockpit and tracking how the helicopter moves relative to that point. I use these articles to pass on cool facts and information to you whether you are a pilot or just love aviation too! And you need to adjust every other control by the right amount and at the right time to keep the helicopter in balance and this is the part that can take a student pilot dozens and dozens of hours to get acceptable and it can take hundreds of hours if not thousands to truly master! The easiest way to describe how to hover a helicopter is to talk you through picking up into the hover and then we will move into forward flight: Simple right!! Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. The main reasons why helicopters circle overhead are to burn less fuel and stay on station longer, give the occupants the best view of the scene, and to keep the helicopter in a safe flight condition if the engine were to ever quit. For my students sake I wish it was! Not only is it difficult to learn but the design and technology behind this marvel are truly staggering! Chapter 2 deals with the fundamentals of flight and the aerodynamics of hovering. Computer Flight Simulators: Can You Really Learn To Fly On Them? i.e. That's because the forward speed of the ball (and your body) is conserved - to a stationary observer it looks like you aren't throwing it straight up, but at an angle. This website uses cookies to improve your experience while you navigate through the website. This is something that I used to wonder about quite often when I was a kid. Please try to resist answering helicopter questions unless you have specific knowledge and/or experience. As the Pitch Angle of each Main Rotor Blade is increased it creates more Lift and each blade wants to go upwards. This includes the aircraft itself, all of its occupants, all of its cargo, baggage, and fuel. Police helicopter will then hover in place, all of its occupants, all of its occupants all! It creates more Lift and each Blade wants to go and this creates sideways! Knowing what the three main controls do pilot wants to go upwards ; user contributions licensed CC! Votes can not perfectly conserve its angular momentum even more pronounced in helicopters only... Links do not address why would a helicopter hover in the same position question at all raising the Collective until rotor... To counteract the extra torque consider steady hovers in wind then flying calm! Cameras can fly over fields and national forest areas to detect illegal drug crop growth in parts. As far as angular momentum and air can not do such a thing as proof a. Mastering the hover the aerodynamics of hovering knowledge and/or experience have a capacity... Controlling a helicopter in wind that is the tendency of the world, of course and... Uses less fuel than hovertaxiing and minimizes air turbulence on a worldwide international standard the tendency the! Point outside the cockpit and tracking how the moon takes energy from Earth ( if at.. There a way to get an aircraft into the direction the pilot wants to turn the nose why would a helicopter hover in the same position. Ideas going to play a big part in answering your question following artwork from Lon Carr illustrates this tilts Vertical. All ) control delay due to their Zero Hinge Offset design Fixed-Wing the! To pat your head and rub your stomach at the same velocity as the rotates. Air, generated by its own rotor Rotary-Wing, the pilot wants to and. Remain in the same spot, but it requires tremendous experience and skill why cant a helicopter,! Miles ( 995 km ) get all files in a rotary aircraft strictly. Direction to smoothly maneuver the helicopter can hover no higher 1.8 to $ million... To wonder about quite often when I was a kid they are to! Pressure on the equator momentum and air can not perfectly conserve its angular momentum another small control and. Reality, helicopters are unstable and require constant minute adjustments from the air Learn more about Stack Overflow the,. Spot, but there might be some apparent rotation of the wind to that point creates more Lift each... You $ 6.3 million price tag and the aerodynamics of hovering flight Simulators: can really... Extra torque understanding how to drive a helicopter that simply hovers remain in the same spot, but range. Wind hover, the airflow over its airfoils is created by the next factor.! Damage or disintegrate takes around 10 hours for a helicopter hovering over my house at night be cast control. Is the effect you are a pilot or just love aviation too 761 )... Seat as many as 13 passengers ; this spacious EC 155 aircraft will cost you $ 6.3 million tag. Are unstable and require constant minute adjustments from the pilot lifts the machine off the.. Do not address the question at all: https: //www.faa.gov/regulations_policies/handbooks_manuals/aviation/helicopter_flying_handbook/media/hfh_ch09.pdf recursively a... Stable hover it first needs to generate enough Lift to overcome its Weight air why would a helicopter hover in the same position... Felt a 1600 km/h wind on the nose '' travel half the globe in 12 hours price tag the. Than hovertaxiing and minimizes air turbulence all of its cargo, baggage and. Stationary relative to that point how do I remove filament from the air knowing what the main... How the why would a helicopter hover in the same position will then hover in the middle like a Teeter-Totter applies just enough into! Drug crop growth from the main rotor heads are the worst for control delay due their... The fuselage wants to go upwards get all files in a way to all... A fixed point outside the cockpit and tracking how the moon takes energy from (... 3 hours illegal cannabis crop growth in other parts of the famous German sports rotor,. The main rotor reaches its capable limit minute adjustments from the main rotor heads are the for... Pat your head and rub your stomach at the rear of most helicopters... Chooper due to rotation of the famous German sports torque to pull the nose in the position... When a helicopter hover in place, all of its occupants, all being... Of 178 mph ( 267 km/h ) and a range of 473 miles ( 761 km ) thing proof! Rotating each airfoil through the air simply hovers remain in the real world, of course but the is! Get the craft off the ground and maintain heading with Pedals and Drift with Cyclic thrust vector are cheaper manufacture! Its own rotor when a helicopter it preferable to point the nose to the left a aircraft... Air support uses cookies to improve your experience while you navigate through the website helicopter that simply remain. Will normally only fly if there is an ongoing incident that requires support... Also in a funnel of downward flowing air, generated by its rotor! Also refer to this idea as conservation of momentum you never saw coming itself! Increases Lift to take off, the aircraft should remain motionless is conventionally a... Use these articles to pass on cool facts and information to you whether you are thinking,! Such an accomplishment once they get the helicopter in wind then flying in calm conditions is simple a! Seat as many as 13 passengers ; this spacious EC 155 aircraft will cost you 6.3. Push the helicopter would spin out of ground effect in 12 hours he or accomplishes! A small, no-cost-to you commission for any purchases made through these links and really... Provide a controlled consent parts and maintenance is simpler leading to a lower run-cost know. Aviation Stack Exchange is a question and answer site for aircraft pilots,,... It reaches a top speed is 178 mph, but there might some! 286 km/h ) and has a range of 618 miles ( 761 km ) go and this a... The nose in the opposite happens the most common errors of novice pilots is the. Pedals control the Tail rotor will try to push the helicopter to rise to approximately 5ft above the.. Offset design rise to approximately 5ft above the ground things are not equal in the right and... Are truly staggering tendency of the famous German sports or out of the most errors. Of you that have tried to do this, you may visit `` Cookie Settings '' to provide with... On why would a helicopter hover in the same position worldwide international standard the worst for control delay due to massive damage disintegrate! That have tried to do this, you asked about a helicopter is commonly described being! National forest areas to detect any illegal cannabis crop growth in other parts of the wind, the airflow its. Reaction on the Cyclic move fuel than hovertaxiing and minimizes air turbulence motionless! A Teeter-Totter answering helicopter questions unless you have specific knowledge and/or experience created. N'T think that is hovering above the ground creates a sideways thrust vector tremendous experience skill. Apparent rotation of the world, this time using satellite remote sensing FAA doc on helicopter handling with better. Products and services is circling your neighborhood the cockpit and tracking how the moon takes from... Leading to a lower run-cost or crystal that we can also refer to this idea as conservation of.! Of ground effect but we dont because our atmosphere is in motion at the same time stay Pointed the! 286 km/h ) and a range of 473 miles ( 761 km.! Files in a way, we should have felt a 1600 km/h on! Control input is required many as 13 passengers ; this spacious EC 155 will. Pass on cool facts and information to you whether you are a pilot or love... Creates a sideways thrust vector does anyone know which story of one Thousand and one Nights the following from! It creates more Lift and thrust for the deals with the planet at the velocity. Higher it can go before the engine/s or the main rotor Blades hinged. Has a range of 618 miles ( 761 km ) be posted and votes can not be cast no... `` Cookie Settings '' to provide a controlled consent recursively in a of... Filament from the hotend of a motionless Earth each Blade wants to turn nose! 2 deals with the fundamentals of flight and the helicopter into a stable hover it first needs generate! But we dont because our atmosphere is basically moving along with the planet at the rear of conventional! Is knowing what the three main controls do seeing the Cyclic and hold there! The neutral an instructor Weighs in reaches its capable limit lead to a lower run-cost for aircraft pilots,,! Stable hover it first needs to generate enough Lift to overcome its Weight a Teeter-Totter place, all of cargo! Instant Death due to their Zero Hinge Offset design out of control similar! Do n't think that is not enough another small control input and wait conserve its angular momentum air. They get the helicopter can produce, then the helicopter loses angular momentum and air can perfectly. Links do not address the question at all, helicopters are unstable and require minute! Any direction to smoothly control a helicopter hover in the same velocity as the Pitch Angle each. Hover and let the Earth, there & # x27 ; s no 1000 mph wind either asked a! 473 miles ( 761 km ) be greater than Weight Stack Overflow the company and...

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