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Flight model comparison of F-16 with asymmetric loadout in both simulations (BMS/DCS).
Loadout of 2x Aim-120 Left/ 1x Aim-120 Right & Central Fuel Tank was not enough for yaw departure in both platforms.
Both planes were rolling hard to the left hand side - hard to control it in level right turn!

00:00 - Real life F-16 test
00:40 - 1st test DCS World
01:05 - 1st test Falcon BMS
01:30 - 2nd test DCS World
02:00 - 2nd test Falcon BMS


FM FALCON BMS Part 6 – The Mechanical Module by MavJP
2. The Mass and Gravity Center position

In the new flight model, the mass is constantly updated taking into account:

- Empty mass
- Fuel mass
- Weapons mass

What is new here is that the module is also updating the position of the CG.
The position of the gravity moves:

- Along the X axis, it determines the stability in pitch of the aircraft
- Along the Y axis, it determines the trim conditions in roll.

The position of the CG along the X axis is extremely critical for the F-16 because the empty CG position is already AFT, making the aircraft instable. The FLCS is able to manage this negative static margin, however within certain limits.

The FLCS has been designed for a center of gravity at 0.35c (35%MAC), c being the main chord of the wing (11.32ft).

It is important to understand that during a mission, the CG position evolves with fuel consumption and loadout delivery. Basically the engineers have positioned and calculated the fuel tank position and fuel management system in order to stay within the limits of the FLCS. The positions of the pylons have been determined accordingly. However, it is the responsibility of the pilot to ensure that the CG will stay within limits all along the flight with the chosen loadout.
(...)BMS now accurately simulates the variation of the CG position in real time, taking into account fuel and weapons. For the pilot, it means that the reactivity of the aircraft and the risk of departure is now dependent on fuel and the loadout(...)

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