Specifications

MIL-STD- 1472E
5.4 Controls.
5.4.1 General criteria.
5.4.1,1 Selection.
5.4,1 .1.1 Distribution of work load. Controls shall be selected and distributed so thatnone of
the operator’s limbs will be overburdened.
5.4.1 .1.2 G-loading.
Where applicable, control selection shall consider operation under
variable g-loading on the operator.
5.4.1 .1.3 Multimtation controls. Mtdtirotation controls shall be usc.dwhen precision is required
over a wide range of adjustment.
5.4.1 .1.4 Detent controls. Detent contmk shall be selected whenever the operational mode
requires control operation in discrete steps.
5.4,1.1.5 Stops. Stops shall be provided at the beginning and end of the range of control
positions if the control is not to be operated beyond the indicated end positions or specified limits.
5.4.1.2 Dimxxionof movement.
5.4.1.2.1 Consistency of movement. Direztion of control movement shall be consistent with the
related movement of an associated display, equipment componen~ or vehicle. in generai, movement
of a control forward, clockwise to the nghL or up, or pressing a controi, shall turn the equipment or
component on, cause the quantity to increase, or cause the equipment or component to move fonvard,
clockwise, to the right, or up. Valve controls are excepted (see 5.4.1.2.4).
5.4.1 .2.2 Multidimensional oueration. When the vehicle, equipment, or components may
move in more than two dimensions, exception to 5.4.1.2,1 shail be made if necessary to ensure
consistency of anticipated response (e.g., forward motion of a directional control causes sortw vehicles
to dive or otherwise descend rather than to simply move forward). When several cuntrcdsare
combined in one device, responses shall be compatible with cent.ml movement (e.g., control motion to
the right is compatible with clockwise roll, right turn,and dinzt movement to the right).
5.4.1 .2.3 Operator-amtrol orientation. Controls shall be oriented with respect to the operator.
wem a vehicle operator may use two or more stations, the controls shall cause movement oriented to
the operator at the effecting station, unless remote visual reference is med.
5.4.1 .2.4 Valve controls. Rotary waivecontrols should open the valve with a counterclockwise
motion. Valve controls shall be
ptwkkd with (httbte-ended
armwsshmving thedinxtionof
operations and labeled at each end to indicate the functional math (e.g., open and cdom).
5,4.1.3 Arrangement and grouping.
5.4. !.3.1 OKuq?in~. comdswhiuh em Opera@din&ti&wqwu@Jwu=
operated together shall be grouped together along with their associated displays. When several steps
of a sequence are selected by one control, the steps shall be arranged by order of occwrence to
minimize control movements and prevent cychng through unnecessary steps. Cychng through the
timml’s ON/OIT ,pasii.ions!MI1bc avcic!ec!