1 Title of the Invention
Actuator Integration Rig for Alignment of Inflight Refuelling Probe Installation on Military Aircraft
2 Field of the Invention
The inventor helps in offsite rigging position of mechanical linkages on Military Aircraft. There is no requirement to carry out further rigging on the aircraft and IFR probe can be operating without any disturbance of flushing of the Starboard Lower Skin panel
3 Background of the Invention
Presently, there is no bench available for carrying out calibration of IFR Probe actuator assembly. Rigging needs to be carried out on the aircraft manually for proper operation of the IFR assembly and closure of Starboard Lower Skin panel with the help of operating mechanism.
Whenever actuator is sent for servicing, the hole position of bell crank levers with the lower rear skin panel will not be in proper position. Rigging is done by operating IFR probe knob in the cockpit. When you operate IFR probe knob, there is sudden/abnormal closure and opening of lower rear skin panel. Every time adjusting the check nut for rigging purpose is very much time consuming and minimum two persons will be required.
Electrical motor arrangement is made for operation of the IFR actuators on bench. This bench is designed to carry out the requisite calibration or rigging of the IFR actuator assembly on bench and further, fitment on the aircraft. Post calibration or rigging on the bench, there is no requirement to carry out further rigging on the aircraft instead the mechanism can be installed on the aircraft and IFR probe can be operating without any disturbance of flushing of the Starboard Lower Skin panel.

3.1 Prior Art
No prior art exists hence cannot be compared with any previous art
4. Brief Summary of the Invention
This invention is used for rigging of lower door operating mechanism. There is an electric actuator which connects machined plate(fitted in to the lower skin panel)and the bell crank at two ends in lower door operating mechanism. Precise actuator extensions the absolute necessity for proper closing of flapson aircraft. The testing is one of the important partfor proper rigging. Testing is done by manually pushing the switch up or down. When the actuator reaches its extreme limit the respective lights will glow. Any further movement will overload the Actuator and Circuit Breaker(CB) is provided to ensure safety of the Test Bench. When there is an excess flow of current beyond 5A the CB trips and cuts off the power to the circuitand safeguards the actuator and other linking mechanism.
5 Detail Description of the Drawings
Figure 1: Two brackets fitted with bushes and spherical bearings are bolted with interposed packings to the door and provide hinge and operating mechanism attachment points.
The operating mechanism is powered by an electrical actuator and comprises a machined plate fitted in to the lower skin panel. Two bell crank levers which pivot about support levers bolted to the plate. A rod with end fittings links the two bell crank levers, one of which is connected to the actuator. Two adjustable forks forming on adjustable assembly, link each bell crank lever with brackets attached to the lower door. Bushes, plain bearings and spherical bearings are fitted at pivot points.
Figure 2 -Block diagram of Actuator Integration rig
Figure 3: A power supply of 28V DC is connected through a CB of 5 Amps to a Power supply indicator(LI). IFR probe actuator control

switch(S1) is connected to two motors (Motor-1 & Motor-2) through two relays {Relay-1 & Relay-2). Normally closed switches S2 and S3 functions based on energization of relays. During extension of actuators, S1 in position 1, closed switch S2, Relay 1, Motor M1 & M2, Lamp L3 & L5 being in the Circuit.During retraction of Probe actuators with Switch S1 in position 2, normally closed switch S3, Relay 2, Motor M1 & M2, Lamp L2 & L4 will be active in the Circuit.
Detail Description of the Invention
The bench works on 28 V DC and is as per Figure (2). A power supply of 28V DC is connected through a circuit breaker (CB) of 5 Amps. Output from the CB is given to Power supply indicator for indication of presence of the electric power. IFR probe actuator control switch(S1) to control the forward and reverse direction of the actuator through operation of Motor 1 and Motor 2 is connected.
Two relays (Relay-1 & Relay-2) are controlled through the normally closed switches (S2 & S3) present in the DC Motor which opens after complete forward operation and reverse operation of the actuators. Due to open circuit of the relay the motor stops functioning which further stops the operation of the IFR Probe door actuators.
Relay No. 1 and Relay No.2 are energized automatically when the test bench is powered on and CB is in 'IN' Position based on the switch S1 Position in 1 or 2 respectively due to the presence of normally closed switches S2 and S3. When Relay 1 is energized the Motor 1 and 2 are functional and the IFR Probe door actuators extends. When the actuators are fully extended Switch S2 opens and the Motors stop functional there by cutting of the operation of Actuators. Lamp L3 & L5 glows during the operation and goes off when the Switch S2 opens or the Motor M1 & M2 stops functioning.

When the actuators are fully retracted, Switch S3 opens and the Motors stop functional there by cutting of the operation of Actuators. Lamp L2 & L4 glows during the operation and goes off when the Switch S3 opens or the Motor M1 & M2 stops functioning.
Every time operation of actuators is stopped, the rigging position in the bell crank lever which is connected to Lower door structure is cross checked through the guiding pin and adjusted through the chuck nut manually which is provided in the actuator. Extension and contraction of actuators repeated till guide pin passes through rigging hole properly.
CB of 5 A is provided to ensure safety of the Test Bench. When there is an excess flow of current beyond 5A the CB trips and cuts off the power to the circuit.

Title: Actuator Integration Rig for Alignment of Inflight
refuelling probe installation on Military Aircraft

Claims
We claim,
1. A test- bench for Actuator integration rig used for alignment of Inflight
refuelling probe installation on Aircraft comprising:
a Circuit Breaker - CB;
a Power supply-28 V DC;
a Power supply indicator-L1;
a IFR probe actuator control switch- S1;
two relay connecting switches - S2 & S3;
two relays - Relay-1 & Relay-2;
two Motors (Motor-1 & Motor-2);
4 Lamps-L2, L3, L4 & L5;
a Wooden box to contain the test set up; and
Looms for establishing connection between the test bench, power
supplies and hand controller
2. The test-bench Actuator integration rig as claimed in claim 1, contains the spring loaded IFR probe actuator control switch, which has 3-way movements (Positionl, Position2 and Zero position) for energizing two relays (Relay-1 & Relay-2). Two relays will control the movement of DC motor (2 No) which operates the actuator
3. The test bench as claimed in 1 and 2, can be used for tuning the rigging in bench and fitment of the Lower door operating mechanism in the field areas as the power supply connectors and connection are compatible to that of the aircraft maintenance requirements.