R 1EFF : 301-399, 1 05-57-00Page 219 1 1 May 01/04 1 1 1CES 1
R (a) Continue vertical line DC' until it cuts across the "contact
R force" scale to get point E.
R (b) From this point, make a line across one division (0.8
R ton/division) to get point E'.
R (c) From this point E', make a vertical line until it cuts across the
R horizontal line DB' to get point F.
R The diagram shows that under these conditions,engine installation
R is possible in the open air in winds of less than 30 kts (56
R km/h).
R (4) Calculation of the amount of ballast necessary for engine
R installation.
R It is considered that engines are installed in the open air, with
R peak windspeed of 40 kts (74 km/h).
R The ballast, if necessary shall be installed in the forward
R cargo-compartment at position 11.
R (a) Continue line B'F until it cuts across the 40 kts (74 km/h)
R average windspeed line at point H.
R (b) Continue vertical line FE' until it cuts across the "ballast on
R section 11" scale at point G.
R (c) From point G, make a horizontal line wich cuts across the
R vertical line from H at point J.
R (d) Count the number of divisions on the scale between point G and J
R (in the example 1 division) .
R Thus, weight of ballast necessary:
R 1 x 500 kg (1102.3110 lb) = 500 kg (1102.3110 lb)
R In the same way, the amount of ballast necessary at cabin door No
R 1 is, in the given example:
R 0.8 x 500 kg (1102.3110 lb) = 400 kg (881.8488 lb)
R NOTE : As the ballast causes only a small increase in the____
R aircraft weight, this weight increase has been ignored.
R 1EFF : 301-399, 1 05-57-00Page 220 1 1 May 01/04 1 1 1CES 1R **ON A/C 151-199, 401-499,
TASK 05-57-00-200-001-A
Aircraft Stability
1. Reason for the Job
__________________
The method given below is used to do graphical checks of the aircraft
stability.
NOTE : The stability graphs for aircraft on wheels (on dry or wet ground)
____ given in this procedure are applicable to a parked or towed aircraft.
NOTE : With the stability graphs /A/C on wheels) given in this procedure,
____ you can do a chek of shifting or tipping stability limits, if you need to know only one shuch limit (when towing for example).
it is also used to calculate the ballast necessary for aircraft stability
under unfavorable conditions in the followingconfigurations:
-aircraft with 2 engines
-1 or 2 engines removed
-engine re-installation
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
WBM 1-10-00
05-57-00-991-007 Fig. 213
05-57-00-991-008 Fig. 214
05-57-00-991-009 Fig. 215
05-57-00-991-016 Fig. 216
05-57-00-991-017 Fig. 217
05-57-00-991-018 Fig. 218
R 1EFF : 151-199, 401-499, 1 05-57-00Page 221 1 1 Aug 01/05 1 1 1CES 1
3. Job Set-up
__________
Subtask 05-57-00-860-052
A. Aircraft Maintenance Configuration
(1)
Make sure that the flaps, the slats, the spoilers, the speed brakes and the thrust reverser are retracted.
(2)
Make sure that the THS is set to neutral.
4. Procedure
_________
Subtask 05-57-00-210-054
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