OPERATOR’S
MANUAL
CMA-9000 FLIGHT MANAGEMENT SYSTEM
Page
11-18
November 19, 2009
After pressing the MARK functional key the current CMA-9000 FMS system position is stored in the predefined
label “MARK ON TOP”.
The CMA-9000 FMS Weather Radar or AHCAS EFIS input interface decodes the selected Joystick
Latitude/Longitude received from the Weather Radar or AHCAS joystick equipments and displays this data in
the field “LAST JOYSTICK” (if configured) along with the time of reception.
The CMA-9000 FMS computes the PLS waypoint position in latitude and longitude and in bearing/distance from
the aircraft present position using the range and steering angle data provided by the PLS. This data is displayed
in the field “LAST PLS” (this field is displayed on the PREDEF WPT 2/2 page if the PLS equipment is
configured).
Press <NEW USER WPT>, LSK 6L to store the waypoint in the User Database. The position of the waypoint with
the most recent time of reception is transferred into the USER WPT 1/2 page. Refer to the USER DATABASE
procedure section in Section 11-4.
To insert any of the three positions present on the page in a flight plan, press one of the LSKs (1R, 2R, or 3R) to
copy the point in the scratchpad, and follow the waypoint insertion procedures as presented in Section 3.
The UPDATE POS prompt opens the page with the same name which allows manual updates of the following
navigation modes: INS/GPS {SAGEM SIGMA50H EGI configuration only}, INS/DVS {SAGEM SIGMA50H EGI
configuration only}, INS {Litton LN_100GT EGI configuration only}, and DVS {DVS configuration only}. Refer to
the UPDATE POS in section 12.
HOVER PROCEDURE (TRANSDOWN TO HOVER) (If configured)
The CMA-9000 FMS can also manage a transdown profile to hover based on the definition of a mark point
MRK, a track at MRK opposite to a wind direction, and a hover height at the MRK point. The theoretical profile
for height and speed used to go from the current height and speed value to the final height and speed value is
taken into account.
The TDN and MARK points are treated as flyover waypoints. No other waypoint can be inserted between them.
The transdown to hover flight profile is split in two phases:
•
In the first phase the CMA-9000 FMS computes a trajectory in order to put the aircraft in the correct wind
direction. The helicopter is brought to a point TDN facing the wind. The TDN point located at the same
altitude as the beginning of the maneuver is obtained by calculating a guided automatic transition distance
(DTRA) to the MRK point.
•
The second phase deals with the transition from TDN to MRK: it is characterized by a fixed bearing and,
before engaging the transition, the distance is recalculated based on true airspeed (TAS) and current
altitude (a command is then sent to the AFCS, which begins the descent and deceleration profiles).
The definition of the MRK point can be done by waypoint marking or by waypoint selection on the CMA-9000
FMS CDU. Thus the MRK point may be entered manually, selected from the database or defined as the present
position. The MRK point may be defined on the CMA-9000 FMS CDU by the MARK key (if available). In addition
the CMA-9000 FMS provides two input types to mark a point.
This page is printed under user's responsibility
and must not be retained for reference
