If the engines are mounted under the centre of gravity, as in underwing passenger jets, then increasing the thrust will raise the nose while decreasing the thrust will lower it. To release the control lock system, rotate the T-handle 45° clockwise and push it in. Ailerons are used in pairs to control the aircraft in roll , which normally results in a change in flight path due to the tilting of the lift vector. When one aileron is deflected upward, the opposite side goes downward. Aileron differential makes sure the upgoing aileron (on the 'inside' of the turn) causes more drag than the downgoing one on the other wing, so the plane makes a nicely coordinated turn. Provided that your servo is directly ahead of the control. The most basic flight control system design and operate with a collection of mechanical parts such as rods, cables, pulleys, and sometimes chains to transmit the forces of the flight deck controls to the control surfaces. 3 on the two degree-of-freedom system. Rudder accompanies the aileron deflection that initiates a turn (bottom, green arrows). With this, the system becomes even more effective at higher angles of attack. The down travel is more than the up travel b. . The control system can be rigged at several places to provide this differential. If one control wheel is jammed, the transfer mechanism lets the flight crew operate the other control wheel. and the up-going aileron moves 30 mm and the down-going aileron moves 21 mm This means that • the down-going aileron moves 30% less than the up-going aileron ((30-21)/30 = 0. an. Move in opposite direction of each other. View full document. The purpose in checking main rotor blade tracking is to determine the. 1. 5. As the name implies, they deflect by different amounts: When the stick or yoke is moved to the right, for example, the aileron on the right (descending) wing is deflected up much more than the left (ascending) wing’s. 73- During inspection of the flight control system of an airplane equipped with differential-type aileron control, side-to-side movement of the control stick will cause A- each aileron to have a greater up travel (from the streamlined position) than down travel. An aileron is a controllable hinged panel located close to the wingtip on each of the aircraft’s wings. Yaw corrections are then done with aileron to rudder mix to keep the nose straight with the same wing rocking inputs. Differential control on an aileron system means that a pulling tool. Ailerons are mounted on the outboard trailing edge of the wings. During a cross wind takeoff, there is a tendency for the upwind wing to lift and for the aircraft to turn into the wind (weathercock) as the aircraft accelerates. The ailerons are the hinged part of an airplane wing. Most aircraft have some means of preventing, or. Which are basically ailerons that extended the entire wing and are used for control and generating lift. The control system can be rigged at several places to provide this differential. B. However a rotation about one axis induces a usually unwanted rotation on the other one. In this paper, the design concept of the aileron with a fixed connector and a moving connector has been explored due to the improvement of aileron effectiveness. ¶ Differential ailerons Aileron and rudder are applied in the direction of the rollout or toward the high wing. Minimum recommended torque puls friction drag torque. Differential control on an aileron system means that the up travel is more than the down travel. +/- 30 degrees for ARI input with the stick. Prior to the use of ailerons. Control Surfaces. Elevator. Induced drag is a by-product of the lift associated with the outside wing. a wall at the end of a roof with a single slope, as that of a church aisle. To return to wings level, the aileron on the right wing. These controls include: The ailerons control the rolling motion of the aircraft through the longitudinal axis. 79- Differential control on B- the up travel is more than the down travel. What is an aircraft aileron?Similarly, the Extreme Flight Extra 300 has two servos per aileron and uses a Four Aileron wing type. The angle of incidence is that acute angle formed by. The pilot controls the forces of flight and the aircraft’s direction and attitude by means of flight controls. Study with Quizlet and memorize flashcards containing terms like 1 - Movement about the longitudinal axis (roll) in a helicopter is affected by movement of the A- collective pitch control. Coupled ailerons and rudder means these controls are linked. Planes usually have two ailerons, one on each wing. 5° TED. On ailerons yes differential will help preventing adverse yaw. Description. What is a differential aileron. Preview. decrease when the aircraft structure and cables become cold. . H. The amount of differential is sufficient to balance the drag between the ailerons, thus eliminating the yaw effect. Since we live in a three dimensional world, it is. But not all aircraft contain such systems. Why is it generally necessary to Jack and aircraft in doors for weighing. (Figure below)Study with Quizlet and memorize flashcards containing terms like 5. It is mechanically simple to provide the ailerons with more up travel than down travel. Finite element analyses were assessed for properly sizing the load-bearing structure and actuation systems and for. outboard on the wing. Elevators, spoilers and rudder are hydraulically powered and designated the Powered Flight Control Sur-faces (PFCS). roll, longitudinal. The airfoil is exposed to the wind flow of velocity V ∞ with the angle of attack of α. Ailerons control an airplane about its longitudinal axis - roll . Without aileron differential, most airplanes require a certain amount of coordinated rudder to prevent—or at least minimize—adverse yaw. Ailerons are located at the rear side of aircraft wings. when the aileron surface moves down, it produces more drag than when it moves up. The advantages of fly-by-wire control are: 3) Direct and indirect weight saving through simplification of systems. For those not aware of the reason for differential and why some of us want to eliminate it I'll explain. The design of the aileron surface itself has also been improved by the "Frise type" aileron. Move the ailerons further outboard to the wing tips. Gibbs. . Do ailerons increase drag? The extra upward aileron movement produces more drag change than. This produces an increase in drag on the descending wing, which reduces adverse yaw. The pilot controls the forces of flight and the aircraft’s direction and attitude by means of flight controls. around or about the longitudinal axis controlled by the ailerons. A. Differential ailerons are ailerons which have been rigged such that the downgoing aileron deflects less than the upward-moving one,. Control deals with the issue of whether the aerodynamic and propulsive controls are adequate to trim the vehicle (i. The advantages of PID control could be concluded as simple structure, robustness of system inertia matrix, specific physical meaning, and so on. Term. at the servo arm, at the control surface horn, and by offsetting the surface hinge line to the top or bottom of the wing. On outboard trailing edge of each wing. If the control system freeplay exists, pilots must continually experiment with stick position within the. differential-type aileron control, side-to-side movement of the control stick will cause AAssembly and Rigging Practice Quiz #4. Those ailerons whose extent of angular movement up and down is different. See Page 1 This aileron control effort is very reasonable and achievable if the ailerons are assumed to have instantaneous response characteristics by neglecting the lag from actuators or hydraulic systems. The tail drops during a turn. Selection of a given wing type will assign each servo to a separate port on the receiver, where the pilot can individually control the center and endpoints of each servo and take advantage of any matching capabilities that a radio may offer. I always thought the clevis should go on the horn, ideally over the centre of the hinge line. Zolghadri,. Minimum recommended torque puls friction drag torque. The flaperons combine the function of: ailerons and flaps. 0*aileron = 1. AKA - The "Flywheel". The exception is when the airplane has a flat-bottom wing. The ailerons are used to bank the aircraft; to cause one wing tip to move up and the other wing tip to move down. Does not change when in flight. Ouyang et al. In this case, since the raised aileron has as much or more surface area exposed to the airflow (thus increased drag) than. an increase in drag on the descending wing. YOUR MODEL IS EXPERIENCING ADVERSE YAW IF: The model skids through turns. Study with Quizlet and memorize flashcards containing terms like Primary flight controls, Ailerons, Rudder, Elevator/Stabilator, Secondary flight controls and more. Movement of any of the three primary flight control surfaces (ailerons, elevator or stabilator, or rudder), changes the airflow and pressure distribution over and around the airfoil. Study with Quizlet and memorize flashcards containing terms like Which system is differential control associated, an elevator controls _____ about the____ axis, ailerons control____about the ____ axis and more. Differential thrust can be used for directional control on distributed electric propulsion aircraft. What is a differential aileron system? With differential ailerons, one aileron is raised a greater. By making this control input, we are moving the lateral axis and rotating the airplane around the longitudinal axis. Use the greater of the two throws whenDiscussion Aileron differential Electric Plane Talk. That is, the ailerons are responsible for one wing descending and one wing rising. The wing with the UP aileron has had its angle of attack with respect to the stab reduced more then the other side was increased because it started out with a positive angle initially. Adverse yaw is present if the tail of the model drops in a turn or it is quite challenging to roll in an axial fashion. if you do only have one servo for both ailerons, then the Futaba 350 would suit your needs. Frise type ailerons. But equally important is to have a light touch on the aileron stick and a bit of patience when flying slowly. To counter the effects of adverse yaw, you'll find a few different aileron designs commonly found on many airplanes. An airplane has a pair of ailerons, controlled by servos, that move opposite of each other unless they are in the neutral (flat with the wing) position. Pilot controls them through the use of a yoke or stick, connected to the ailerons by cables and pulleys. Independent multi-engine control for airplanes. If you mean the spars are corroded at the tip, come to. Option A. Short answer: Rudder and ailerons have different purposes and control rotation about two different axis. down and the elevator B. H. The airfoil generates the lift force Y. This would necessitate a major alteration of which I have not been able to figure out a simple solution. Power Control Two (PC-2) driven by the right engine, and a Utility system which contains two pumps, one on each engine. ailerons control____about the ____ axis. Preview. See Page 1This aileron control effort is very reasonable and achievable if the ailerons are assumed to have instantaneous response characteristics by neglecting the lag from actuators or hydraulic systems. Though not entirely eliminating adverse yaw, the "differential type" aileron system raises one aileron a greater distance than the other aileron is lowered for a given movement of. Track. Select a Model Memory using Model SEL in the SYSTEM Menu. ProTrim in-flight adjustment of rates, expo, mixes and differential. With differential ailerons, one aileron is raised a greater distance than the other aileron is lowered for a given movement of the control wheel or control stick. The cable-operated control system of an all-metal aircraft, not incoporation a temperature compensating device, has been rigged to the correct tension in a heated hanger. As the total servo throw is decreased, the proportion of play, or slop, in the control system is effectively increased. At positive wing angles of attack, the hinge moment acting on both ailerons is. As discussed in Chap. drag decreases on the outer wing. 6. Well, if you have one servo driving barn door ailerons through a bellcrank system, then off-setting the control horn on each aileron is one way to get differential. Some ailerons are designed to counteract adverse yaw and may move such that they are asymmetrical to the flow over the wing. (more up travel than down). Hi there peoples!In this movie I first show you my new version of the SpeedWing :)After that, I do a little chit-chat about the how & why of differential ail. The tail drops. > If differential mix is backwards (more down than up. Buffeting is the intermittent application of forces to a part of an airplane. Pulley misalignment. areilon to roll, rudder to control yaw and elevator to turn. 2. Study with Quizlet and memorize flashcards containing terms like The A and B FLT CONTROL switches control hydraulic shutoff valves. When the ailerons deflect. 19. Hi Ken, The main reason for the differential, is to help make the turns smooth, the greater travel on the up aileron helps yaw the airplane in the intended direction. Aileron differential can help with this, but proper use of the rudder is more effective. Ailerons are small hinged sections on the outboard portion of a wing. With which system is differential control associated? (A). That now means an airplane that will want to roll right as soon as you release the control wheel. +/- 5 degrees of pilot input above 1. 257 studied the influence of flap camber on the wing flutter bounds, and designed an LQG compensator to control the flap deflection to actively suppress the aeroelastic response. 1. NOTE: The aileron throws shown for the top wing represents the differential created by using the aileron connecting rod. Trim. A basic means of controlling an aircraft with disabled flight controls is making use of the position of the engines. . l F06 Why is it generally necessary to jack an. 0 0. Pitch control, this bit enables or disables pitch control output using the differential spoilers. C. The control surfaces are the hinged. On outboard trailing edge of each wing. Three axes, three sets of controls (mostly) With a few exceptions, light aircraft flight control systems are very much alike, using hinged flaps along the trailing edge of each wing (you already know them as ailerons) to control the airplane around its roll axis. The aircraft control system controls the whole flight movement process. When one aileron is raised, the other is lowered a smaller amount. differential flapping amplitude for roll control Ornithopters. 3. In the present research, in order to improve aileron effectiveness, several. This is a vital and crucial aspect of flight control. Learn the definition of 'differential aileron'. It is caused by the difference in lift and drag of each wing. measuring the angular setting of each wing at the rear spar with a bubble protractor. This means when the control column is moved in any direction right or left, the up-going aileron moves through a greater angle of attack than the down-going aileron. >The FO SIDE controls the SPOILERS. As usual, aileron reversal or the blocking phenomenon of multijoint fixed ailerons is a hard nut to crack. What is an aircraft aileron? Description. To improve the flight performance, a fixed-wing UAV with segmented aileron control surfaces has been designed and deployed. aileron differential is a function that causes the ailerons, when controlled by a separate channel per side, to move differently in the UP vs DOWN direction. manufacturers have engineered four systems: differential ailerons, frise-type ailerons, coupled ailerons and rudder, and flaperons. To help reduce the likelihood of wing tip stall and adverse yaw, engineers developed differential ailerons. The auxiliary (tail) rotor of a helicopter permits the pilot to compensate for and/or accomplish which of the following? Torque and directional control. The bottom sector is the aileron control tab sector. A full length aileron is more drag than a tip length aileron when deflected. Aileron differential simply means that the ailerons move more in one direction than the other, with the greater deflection being upwards. Also increase. ¶ Aileron types. This means that a control system designed for a maximum deflection of, say, 15° on the ground, may only deflect as much as 75% of that in flight. Differential. Dec. Also, for a given control input, the servo has to work harder. D. A/C banks LEFT. When you roll right, the opposite happens. Tech Log - 737-800 Aileron Movement - Hi, Recently flew return sectors in the pax cabin of a 738. The rig. 16. Wind tunnel. The instructions say to adjust the servo arms to set the ailerons up for less travel down than up (presumably to reduce adverseNote that the control system will stretch in flight reducing the maximum ground deflection. On faster planes with their more efficient control systems, differential as extreme as the TM is seldom seen. 2. The ailerons are attached to the outboard trailing edge of each wing and, when a manual or autopilot control input is made, move in opposite directions. Movement of an airplane along its lateral axis (roll) is also movement. Forums; Magazine; Blogs; Classifieds; Places; More; Search; Sign Up | Log InThose Dubro horns work and have ample adjustment with the various holes. A check of the parts manual will confirm this. collective pitch changes. This would necessitate a major alteration of which I have not been able to figure out a simple solution. Most light airplanes have two ailerons, one on the trailing edge of each wing. Wing flaps, leading edge devices, spoilers, trim systems. The aileron control system can be represented by a block with the transfer function G1(s) = 10/106. As in the case of Frise aileron, this differential profile drag produces a yawing motion that at least partially offsets the adverse yaw, but the effect is limited. I have a couple of models that require aileron differential; a notable one being a Hobbyking Lancaster. Going on to talk about the role of ailerons in a spin. The reason why ailerons are sometimes set up this way is to counteract any adverse yaw when the airplane is in a banked turn. The behavior of the trailing edge when the surface is suspended from its hinge points. 250-model internal memory. Most general aviation aircraft control systems include flexible steel cables, otherwise known as wire rope. Pressure Differential Cabin Differential Definition The difference between cabin pressure and atmospheric pressure. With increasing chord, the deflection range will become smaller, like ±15° for a 30% flap. Half of a wing with defined control surface is defined in Figure 2. Turning control stick/yoke right causes the right aileron. One aileron is raised a greater distance than the other aileron is lowered. This produces. MUMMERT DIFFERENTIAL AILERON CONTROL Filed Feb. The effect can be greatly minimized with ailerons deliberately designed to create drag when deflected upward and/or mechanisms which automatically apply some. Joseph's College; Course Title RECREATION 253; Uploaded By LieutenantExploration3201. , assignors to Boeing Airplane Company, Seattle, Wash. system is usually a sufficient approximation for an inertial coordinate system. , An airplane that has a tendency to gradually increase a pitching moment that has been set into motion has. 2Figure 3 shows a representative control stick with differential aileron gearing. A hinged control surface on the trailing edge (rear side) of an airplane wing near the tip, the aileron moves up and down and controls the direction of a rolling turn. Primary control systems. Wing aps, leading edge. Ailerons are a primary flight control surface which control movement about the longitudinal axis of an aircraft. The load-feel function operates by spring tension at the sectors. The F-15 control system is powered by three separate hydraulic systems: Power Control One (PC-1) driven by the left engine. Two Aileron Types. 1. drag increases on the inner wing. Automatic Flight Control, Pallett 4th Edition Page 41. What is more dense humid air or dry air? Humid air, so with a high water vapor is less dense than dry air. The down-going aileron is normally deflected through a greater angle than the up-going ailerons; hence, the differential drag they produce results in the yaw. 1. 1924 2 Sheets-Sheet 2 HIM INVENTOR ATTORNEY HARVEY CMUMMERT. When the yoke is moved in or out, the ruddervators move together and act as elevators. Google has not performed a legal analysis and makes no representation as to the accuracy of the. The fly-by-wire (FBW) control system employs electrical signals that transmit the pilot's actions from the flight deck through a computer to the various flight control actuators. They are controlled by turning the yoke or stick left or right in the cockpit. This is caused by the higher induced drag on the outside wing, which is also producing more lift. 4. In this paper, we review the concept of Lie brackets and how it can be exploited in generating motion in unactuated directions through nonlinear interactions between two or more control inputs. In the example above, the two aileron surfaces deflect as follows: Right control surface: 1. It has 2 rotating propellers which can provide differential thrust, and an airfoil with a solid flap built in to make takeoff as short/efficient as possible. For example, in formation flight pilots constantly make small adjustments to stay in position. Inboard toward the fuselage. This movement is referred to as "roll". How Ailerons Work. 8,. ) Expired - Lifetime Application number US695963A Inventor Harvey C Mummert As discussed in Chap. 3. Study with Quizlet and memorize flashcards containing terms like Improper rigging of the elevator trim tab system will affect the balance of the airplane about which axis?, What is lateral control?, What is longitudinal control? and more. InRotation of the control wheel turns the drum to which the aileron control cables are attached. The size and planform of the ailerons are set by the roll-control power needed to meet flying qualities and maneuvering requirements. This would require squaring off the tips. Differential ailerons function in the same manner as symmetrical ailerons except that the upward deflecting aileron is displaced a greater distance than is the downward deflecting aileron. B -. It is located on the outboard section of each wing and works in tandem with other control surfaces to control the aircraft’s roll during flight. The ailerons, elevator (or stabilator), and rudder constitute the primary control system and are required to control an aircraft safely during flight. A lot of work has been done on PID control. Secondary flight control. This means that in order to make the plane remain in coordinated flight, you need to produce more drag on the side of the 'upward' aileron. *C- down and the elevator will move down. Slot-Lip Ailerons. Flight Mode and SAFE functions can be put on channels 7 and 8 even though the RX is only 6 channels, and this lets you use. g. That means they have a lot of effective dihedral and essentially a flat-bottomed airfoil. This type of aileron also produces to develop a slot in the system so that the air can flow smoothly over the lower aileron. Study with Quizlet and memorize flashcards containing terms like Primary Control Surfaces, Secondary Control Surfaces, Ailerons and more. Forums; Magazine; Blogs; Classifieds; Places; More; Search; Sign Up | Log InWhen two aileron servos and the flaperon function are used, adverse yaw can be lessened by programming a small amount of differential aileron travel (for example, approximately 5° less down aileron than up), consequently improving control and producing cleaner axial rolls. Increases force needed by. Control is defined as the process to changing the flight condition from one trim condition (e. 2. Option C. uk. The ailerons are the flight controls that roll the airplane around its longitudinal axis. See Page 1. When you roll right, the opposite happens. The differential is needed because the down aileron has more drag than the up aileron. With a glider of large span and high aspect ratio we need more upgoing aileron movement to counteract adverse yaw. Some control systems are so poorly designed 4 that they may only achieve 25% of the maximum deflection. The extra upward aileron movement produces more drag change than an increase in AOA on the downward aileron. , Aileron Transfer Mechanism If the ailerons or spoilers are jammed, force applied to the Captain's and the First Officer's control wheels will identify which system, ailerons or spoilers, is usable and which. Some control systems are so poorly designed3 thatA wing is said to be ____ if it is rigged to reduce its angle incidence and decrease lift. In this system the aileron and rudder systems are interconnected, so that when the ailerons are deflected the rudder automatically moves to counter the adverse yaw. The direct adjust function lets you make changes to a given parameter in flight so you can get instant feedback. The differential thrust control effort demands a maximum differential thrust of −3000 lbf (negative differential thrust means ), which is within the. The top sector is the aileron bus sector. Both explanations in the OP are correct to the overall phenomenon of adverse yaw. The goal is changing the wings position for a coordinated turn - quickly with minimal drag. , cruise with a new heading angle) with a desired. The amount of rudder control required is greatest at low airspeeds, high angles of attack, and with large aileron deflections. When the rudder pedals are depressed, the ruddervators move differently and act as a rudder. rigging and alignment checks should not be undertaken in the open. The cables can be manufactured from galvanized steel or stainless steel alloy, depending on the specs from the aircraft manufacturer. The vertical axis but not the longitudinal axis. It is for this reason that an MD-80 tail looks like it has a ‘split’ elevator system. e, assymetrical induced drag on the inside and outside wing during a turn. Prior art keywords aerofoil aileron shafts shaft rock Prior art date 1929-12-30 Legal status (The legal status is an assumption and is not a legal conclusion. Rotation – Control Axes. Thanks, PeterS. Adverse. Set the Modulation Type to match the receiver using MODULAT in the SYSTEM Menu. Discussion Aileron Differential? Electric Plane Talk. This block takes the input ω and produces the output θ. The pilot changes the lift each wing produces to roll the aircraft in. Roll or bank is the aircraft’s movement about its. an unsteady flow from turbulence. Aileron differential function should take into account the 4 wing servos when activated 06-24-2020,. Also increase. Aileron differential simply means that the ailerons move more in one direction than the other, with the greater deflection being upwards. The relative motion between a gyro and its supporting system. Ailerons usually work in opposition: as the right aileron is deflected upward, the left is deflected downward, and vice versa. With which system is differential control associated. these aircaft had absolutely no aerilon efect at stall, only rudder andPrecisely flying an airplane with an appreciable freeplay band is difficult, and with a decrease in precision comes an increase in pilot workload. However, with proper aileron placement and wing twist, an aileron can produce proverse or neutral yaw, eliminating the need for aileron-rudder mixing, differential aileron deflection, or Frise ailerons. The nose swings out of the turn. The problem was recognized even as early as the. Ailerons are used in pairs to control the aircraft in roll (or movement around the aircraft's longitudinal axis), which normally results in a change in flight path due to the tilting of the lift vector. So - my current setup is 10% aileron differential and aileron to rudder mix about 10% to manage yaw. KEM/r E. The FBW system evolved as a way to reduce the system weight of the hydromechanicalsystem, reduce maintenance costs, and improve reliability. This paper presents an assessment of flight dynamics and control under engine inoperative conditions at minimum control speed for a typical distributed propulsion aircraft employing differential thrust. To counteract the adverse yaw caused by the lowered aileron, the raised aileron will generate additional drag on the descending wing. All ailerons are differential, so they are just called “ailerons. Adverse yaw is caused by a lift and drag differential between your two wings. Aileron . 30. Ailerons are a primary flight control surface which control movement about the longitudinal axis of an aircraft. C- the down travel is more than the up travel. The primary control surfaces of an airplane include the ailerons, rudder, and elevator. 40/(s+1. This isn't always the case. The airframe is the basic structure of an aircraft, design to withstand aerodynamic forces and stresses imposed. You might also hear this setup being called differential ailerons. One purpose of the clutch provided between the engine and the helicopter transmission is to. The idea is to have the servo arm command the ailerons movement. Washing-in the left wing of a monoplane, for purposes of rigging corrections after flight test, will have what effect on. Design Process: Aileron Types. In very. Full span ailerons, 1 uses both the inner and outer control surfaces for roll control 0 just used the outer control surfaces. The ailerons are effectively changing the camber of the wing. Finite element analyses were assessed for properly sizing the load-bearing structure and actuation systems and for. Wing flaps, leading edge devices, spoilers, trim systems. Washed out. The ailerons are the hinged part of an airplane wing. Note. 73- During inspection of the flight control system of an airplane equipped with differential-type aileron control, side-to-side movement of the control stick will cause A- each aileron to have a greater up travel (from the streamlined position) than down travel. The vertical flight of a helicopter is controlled by? Collective pitch changes. It is possible to produce a split aileron, which would indeed be (much) less susceptible to adverse yaw. Note: For the learning process any Dual Rate settings must be disabled, to ensure that the maximum control surface travels are learned. In models there's three places. 2An airplane is controlled directionally about its vertical axis by the rudder elevator(s) ailerons. Check out the pronunciation, synonyms and grammar. Differential-Type Ailerons - raise an aileron more than one is lowered . Rudder Authority - The F-15 has three different hydro-mechanical rudder authorities: +/- 15 degrees of pilot input below 1. Special Aileron Conditions Two special conditions arise in the operation of the ailerons. 8284-During inspection of the flight control system of an airplane equipped with differential type aileron control, side to side movement of the control stick will cause? Each aileron you have a greater up travel (from the streamlined position) than down travel. Each aileron has two sectors, a top and a bottom. To initiate a right banking turn, you need to roll the plane to the right. I do actually program in a little bit of differential in the TX, but that's only to compensate for a slight nonlinearity in the RDS drive. My flight school had three different Warriors and only one had the springs. This slide shows what happens when the pilot deflects the right aileron.