Specifications

CT Corsair Final Report May 2, 2014
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5.4 Torque Requirements
After evaluation of the three main simulator movements, the total torque requirements are 3484.1
in-lbs and 2894.3 in-lbs. The larger torque value was selected and rounded up to 3500 in-lbs.
The validity of this number was assessed by two means. First, when comparing the two
calculated torque values, they were within 600 in-lbs of each other. These numbers analytically
are within a reasonable range from each other as the only difference in the assessments is the
addition of the spring force. The second validity check consisted of correspondence with a
professional in the field. Our professional reference, Charles Bartel, works at Moog Motors
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.
This company develops motors for flight simulation equipment and has a department devoted
specifically to flight simulators. Mr. Bartel has designed a flight simulator similar to the ETC
simulator and utilized a motor and gearbox combination which yielded 3500 in-lbs per pushrod.
This number is almost identical to the calculated torque requirements.
A safety factor is included in the selection of the torque requirement. The previous simulator
mimicked the movements of a jet simulator, and the torque requirements from the existing
motors proved adequate for the purposes of the project. Although the minimum requirements for
the motor motion was performed by the existing motor specifications, the renovated simulator
will have an increased acceptable torque range to handle the quicker movements of a Corsair
aircraft.
5.5 Angular Velocity Calculations
Utilizing the previous studies, two angular velocities were generated using the ETC
recommended speeds from Table . ETC recommends 30 cm/sec of heave which was combined
with the change of height of the simulator platform as calculated in the first torque derivation. To
calculate the degrees per second necessary to achieve the desired lift rate the following equation
was derived:
(Equation 11)
This equation states that for every 10° θ travels, the platform traversed a certain distance in the z-
direction. The value is multiplied by the maximum rate at which the simulator traverses the z-
axis. The calculated value for required velocity based on heave criteria was found to be 59.5
RPM.
The required angular velocity for pitch and roll could not be found in a similar manner as the
relationship is not linear like the heave motion. Instead, the roll velocity for a Corsair was
researched and found to be 81°/sec
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. Using the analysis from the second torque calculations, the
following equation was developed for the pitch and roll angular velocity:
(Equation 12)