CheckSix Forums

Hi all,

We have introduced some fixes and improvements to the Hornet's INS modeling in the 2.5.6.53756 Open Beta. Here's an overview:

1. Previously, in scenarios where GPS is not available, it was necessary to perform a fix (such as TACAN) to complete INS alignment. This is no longer the case - initial alignment position in GND alignment mode is provided by the position of waypoint 0 instead of GPS. Normally, waypoint 0 coincides with the aircraft's initial position at mission start, but it may be edited in the HSI/DATA subpage as necessary prior to alignment. In CV alignment mode, initial position is provided automatically via RF (CV SINS) or manually by the pilot (CV MAN).

2. Previously, INS alignment was not complete after 0.5 OK status was displayed in the HSI, and it was necessary to wait a little longer. This has been fixed: 0.5 OK status now indicates a complete and successful alignment.

3. Alignment times have been tweaked: GND and CV alignment take around 8 minutes now. Stored heading option has been introduced, which reduces alignment time to about 90 seconds. GPS alignment has been introduced which takes around 10 minutes and can be performed on the ground and in flight.

4. The stored heading alignment option can now be selected in the HSI when the INS switch is in the GND or CV position. As mentioned above, it reduces alignment time from about 8 minutes to about 90 seconds.

5. GPS alignment has been introduced. When GPS is available and INS quality is less than 0.5 OK, GPS alignment can be performed by placing in the INS switch in the IFA position and observing the HSI indicates IFA GPS and a countdown. This type of alignment takes about 10 minutes.

6. If the INS switch is moved to the NAV position without a complete alignment (ie status less than 0.5 OK), a crossed out ALGN advisory will be displayed in the left DDI.

7. POS/AINS (GPS aided INS) position keeping mode has been introduced. If GPS is available, once alignment is complete, the INS switch should be moved to and kept in the IFA position as per the normal startup checklist. This enables POS/AINS mode which can be verified in the top left corner in the HSI. In POS/AINS mode, GPS is used in conjunction with INS to provide the position of the aircraft. If GPS is not available, the INS switch should be moved to and kept in the NAV position.

8. If the INS switch is placed in the IFA position before INS alignment is complete, in-flight alignment mode will be entered. IFA GPS (with GPS available) or IFA RDR (with GPS not available) will be displayed in the HSI. In the first case, once alignment is complete, the IFA GPS legend will disappear and POS/AINS mode will be entered automatically. In the second case, once alignment is complete the INS switch should be moved back to the NAV position.

9. If GPS is available and the INS switch is in the NAV position, a P/INS advisory will be displayed. This notifies the pilot that GPS is available but it is not being used to augment the INS because the INS switch is in the NAV position, and that it should be moved to the IFA position to enable POS/AINS mode.

diditopgun a écrit : ↑

jeu. août 20, 2020 4:00 pm

Non, il faut cliquer sur "STD HDG" en bas du HSI pour faire un alignement sur cap mémorisé en 90s seulement, puis une fois 0.5 OK basculer sur IFA pour être hybridé GPS.