Altimeters setting

[Kerosene]

Hello Aerges,

The altimeters setting adjustment does not lower the pressure enough.

The limit is 930 mb on the slave altimeter and 902 mb on the backup altimeter.

Is this a normal limitation ? This behavior is not observed on the Mirage 2000.

 

Edited August 4, 2022 by Kerosene

[lucky-hendrix]

I don't know, but could be a real world limitation. 930mb is quite a low pressure, very rarely found in real world condition 

[Kerosene]

indeed, it is not possible to set the altimeter at QFE on several airfields and this also limits the possibility of bombardment.

[Nealius]

Since the F1 doesn't have a bombing computer reliant on target QFE like the Viggen, I just mentally add target elevation to my planned release altitude. 

Edited August 4, 2022 by Nealius

[Santus]

I have faced the same issue on the F-5E which leads me to believe it's accurate.

[=475FG= Dawger]

Most western altimeters are not intended to set QFE and lack sufficient range of pressure selection to do so. Set QNH and do the math.

[Rudel_chw]

On 8/4/2022 at 4:41 AM, Kerosene said:

The altimeters setting adjustment does not lower the pressure enough.

The limit is 930 mb on the slave altimeter and 902 mb on the backup altimeter.

 

The lower limit for the Slave Altimeter is correct as per the real F1, however on the backup altimeter its range should be 870 to 1050.

[Kerosene]

yes the numbers of the counter of the backup altimeter go down to 870 mbar but the needles stop turning sooner depending on the altitude of the terrain. I don't understand this behavior.

For example on the Syria map, on Paphos airfield the needles go down to 975 mbar and stop rotating and on  H3 Northwest they go down to 890 mbar.

Do you have technical datas concerning the real F1 altimeters?

Edited August 5, 2022 by Kerosene

[Rudel_chw]

20 minutes ago, Kerosene said:

Do you have technical datas concerning the real F1 altimeters?

Only what the flight manual of the F1-CZ has about them, not very technical, just a short description on each.