Flight Manual STEMME S6
Doc.-No: P400-006.000 E Page: 6-7 Revision: ---
Date of Issue: 07. October 2008 Date of Rev.: --.--.----
6.4 Operating-Mass and Operating-CG __________________
Only operate the aircraft within the loading-limits and limits for the CG-location.
The current operating-mass and operating-CG can only be calculated by
determining the payload for the planned flight.
To determine the operating-mass and operating-CG graphically and/or through
calculations, use the tables and diagrams given in the following sections:
• 6.4.1 Mass-Moments and Payload: Loading-diagram
• 6.4.2 Calculation of the proper loading for flight
Perform the following steps:
1. Take the empty-mass m
Empty
and the empty-mass-moment M
Empty
from the
current weighing report or from the weighing logsheet. Place these values
in the corresponding columns, row 1 of the table 6.4.2 „Calculation of the
proper loading for flight“.
2. Determine the total mass in the cockpit – including the mass of the pilot,
copilot and payload carried in the cockpit. From this data, determine the
corresponding mass-moments by using Diagram 6.4.1 „Mass-Moments and
Payload: Loading-diagram“ or calculate the mass-moments more
precisely: mass x corresponding lever. Keep the negative value of the
lever in mind, if a location is infront of the RP. Use seperate columns in row
2 for the left and right seat in table 6.4.2 „Calculation of the proper loading
for flight“.
3. Determine the payload carried in the rear baggage-compartment by using
the same methods as in point 2. Place these values in the corresponding
columns of row 3 of the table. Here, the lever always has a positive value.
4. Add all masses and moments from row 1 to row 3 of the table. Place these
total values in row 4 of the table. These results represent the aircraft with
empty tanks.
5. Divide the results from row 4 to determine the lever of the operating-CG.
This must be within the allowed limits. If this is not the case, the payload
must be adjusted.
6. Finally the fuel-payload must be determined precisely. Calculate the
corresponding mass-moment by using the same methods as in point 2.
Place these values in the corresponding columns of row 6 of the table. The
lever of the fuel-mass changes with changes in the amout of fuel. Due to
this, ONLY use diagram 6.4.1 for this.
7. Now calculate the total-mass and total-moment from row 4 and row 6 of the
table. Place these values in row 7. This represents the aircraft in its T/O-
configuration with fuel.