OSA WingManTM Installation

Thanks for your interest in the Oregon Scale Aviation Inc. WingMan servo control system. This controller has been designed by scale aviation enthusiasts with the utmost concern for reliability, safety and usability. Before you can install your WingMan controller, you must make the appropriate connections to your servos and receiver. If you are using a JR, Airtronics or Futaba radio system, the servos will connect directly to the servo output pins of the WingMan unit (see Figures 2 & 3 for correct polarity). Connections to the receiver for these systems can be easily made with standard aileron extenders and the supplied connectors.
If you use a system other than those listed above, you may need to use the supplied connectors to complete your installation. Please be sure to observe the polarities shown in Figures 1 & 2.
 

Figure 2.

To attach your wiring to the supplied pins, simply strip the servo or receiver wire back approximately 1/8" and crimp the wire into the pin supplied using needle nosed pliers. Be sure the wire is firmly crimped in place, and insert all 3 leads into the supplied housing until the retention fingers snap into the housing slot. Test your installation by gently pulling on the leads to insure they are firmly seated.

Plug your receiver servo output into the Signal from Receiver connection, and the wing fold servo into CH1 servo output connection. The wing fold latch servo is plugged into the CH2 servo output connection.

If you intend to use large or high current servos for either wing folding or latching, it is recommended that you supply power to the WingMan directly from the receiver switch harness rather than from the receiver itself. This will eliminate voltage drop from the receiver and receiver connections, and will help to isolate the large servos from the receiver. If you connect the WingMan in this manner, provide power (red) and ground (black/brown) to the Aux Power input connector (see Fig 2). Signal is not required on this connector and you will reduce receiver loading if you do not connect the signal lead. You must however provide only signal and ground (Yel/Or) to the Signal from Receiver connector. Do NOT provide power to both input connectors. It is also recommended that you use heavy gauge wire in connecting the wing fold servos to reduce the voltage drop in the wiring.

Wing Fold/Sweep Introduction

WingMan was designed to enable the scale aviation enthusiast to control the folding or sweeping of wings in a scale-like manner. Additionally, it independently controls a latching servo that insures a positive lock of the wings, while requiring only a single channel of the transmitter.

Here are mechanical drawings which suggest how the internal wing servo and the electronics package could be installed:
Front view inside wing
Top view of enlarged wing detail
Wing section A-A

WingMan assumes the use of servos for both wing folding and latching. The fold servos are driven by the CH1 output, the latch servos are driven by the CH2 servo output. Do not attempt to install folding wings without a latch. The folding servo(s) will not provide adequate power to hold the wings down, and an in-flight failure is likely. Additionally, the current required to hold the wings down would quickly drain the flight pack battery.

Before using the WingMan unit as a wing fold controller, you must first identify the wing down position of the switch on your transmitter. This position must be the 2.0 msec position in order for WingMan to operate correctly. To identify the wing down position of your transmitter switch, plug the wing fold servo(s) into the CH1 servo output. Connect the wing fold channel output of your receiver to the Signal from Receiver input of WingMan (be sure to note polarities).

Turn on your transmitter and receiver. Wait for a few seconds (until all servo motion has stopped) and flip your wing fold transmitter switch. If the wing fold servo starts to move immediately, the transmitter switch is now in the down position. If the servo does not move at all, the switch is now in the up position. Mark your transmitter accordingly. These positions can be reversed if your transmitter is capable of servo reversing for the wing fold channel.

The full up and down end point positions of the wings can be controlled from your transmitter if it has end point or travel volume adjustment capabilities for the wing fold channel. You simply adjust the full up or down end point on your transmitter, and the next time you power up WingMan or initiate a wing fold sequence, the new setting will take affect. The endpoints for the wing fold latch are not adjustable, and accommodations in servo installation must be made to avoid servo stalling and insure full travel.

The WingMan controller is designed assuming your plane is stored with the wing of your aircraft and the position of the transmitter wing fold switch in matching positions. Failure to insure matching positions on power-up may result in excessive airframe stress or damage as the controller drives the wings to the full up or down position (dependent on transmitter switch position) very quickly on power-up.

Many safety features have been incorporated in Wingman, in order to avoid inadvertent wing fold sequencing during flight. First, wing folding will only be initiated after an arming sequence of the transmitter switch. The transmitter switch must first be moved to the up position and held there for at least 1 second. Then the switch must be moved to the down position and held there for at least 1 second. After this sequence, Wingman is now armed. The next time the transmitter switch is moved to the up position, the wing folding up sequence will be initiated. Once a sequence is initiated, the sequence will run to completion as long as power is supplied to the unit. The transmitter signal can be lost completely or the signal connection to WingMan may be severed, but the sequence will complete. In addition, once in the up or down position, the WingMan will continue to drive the servo signal even if the transmitter is turned off or the signal is lost. This capability was incorporated in WingMan so that in the unfortunate event of a transmitter failure, the wings will not accidentally fold. Be aware however that radio interference could send false signals to WingMan that could actuate a sequence. Always insure that no other transmitters are operating on your frequency before you commence flight. WingMan was designed to be somewhat immune to random noise and false signals. All signals are verified to be present for several samples consecutively before a sequence will be initiated. In this way, WingMan will not react to an occasional spurious signal. However, it cannot be expected to function properly in an extremely noisy environment. It is recommended that you always follow the manufacturer’s recommendation for radio installation, and avoid running the antenna close to the WingMan controller or in parallel with the wing fold or latch servo leads.

If during a folding sequence, you move the transmitter switch to the opposite position, WingMan will drive the wings and latches to the new position very quickly, regardless of speed switch settings as a safety feature. As a result, always allow all sequences to complete before moving the transmitter switch position again.

Switch Settings
WingMan operation can be configured using the configuration switches. To aid in understanding the switch positions shown in this section, please see Figure 3. Note that for safety reasons, new switch settings only take affect when WingMan is powered-up.
 

Figure 3.
 
Speed Settings 

Switch positions 3 and 4 are used to set the transition speed of the wing folding servos. In the Low Speed setting, the wings will transition in about 12 seconds (depending on you end point settings). In the Medium Low Speed setting, the wings will transition in about 8 seconds. In the Medium High Speed setting, the transition requires approximately 6 seconds and in the High Speed setting, transition requires approximately 4 seconds. 
 
 
Fast Down Mode

Switch position 1 is used to set the Fast Down mode for the wing fold speed. In this mode, the wings are lowered slightly faster (about 2 seconds faster) than they are raised to more precisely match the scale movement of full sized wings. Fast Mode is activated by setting switch position 1 as shown at left. 
 
 
Wing Fold Servo Reversing

Switch position 6 is used to reverse the direction of travel for the wing fold servo. In the position shown at left, the wing fold servo travel is reversed.
 
Wing Latch Servo Reversing

Switch position 5 is used to reverse the direction of travel for the wing latch servo. In the position shown at left, the wing latch servo travel is reversed. 


WingMan Features

Wing folding or sweeping controller  

 

WingMan Specifications


Warranty

OSA warrants the WingMan controller to be free from defects in materials and workmanship for a period of 90 days from the date of purchase. If your unit is defective, return to OSA with proof of purchase and we will repair or replace the unit as deemed appropriate by OSA. This warranty does not include damage due to accidents, misuse, improper installation, tampering, radio interference, unauthorized repair or acts of God. OSA will not be responsible or pay for loss of time, loss of use, inconvenience, incidental, consequential or property damages due to the use of this product. 
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