Flaps "frozen" when trying to land

[MirabelleBenou]

Hello !

 

First, sorry if bad english :)

 

It may not be a bug but a bad manoeuver from me, but when I try to land, I'm not able to select landing flaps (everything work ok for take off).

 

I push the button in the cockpit, my speed is below 300 Km/s(I tried at 200), but the flaps remained in "flight" retracted state.

 

After landing, I'm able to put the flaps on "landing" state (but well.... it's a bit late :) ).

 

Any idea ?

 

I tried with NTTR. Pretty sure that I have the same problem with 1.57, but have to check.

 

Thanks !

Have a nice day.

[rrohde]

I believe the flaps come out at different speeds - so for the first detent (or take off flaps) - 160kn, and landing flaps at 140kn (sorry, using knots and feet in the cockpit).

[MirabelleBenou]

Thanks for your answer !

 

Anyway, I'm talking about Km/h (not Km/s like in my first post %-) ), but I'll have to check which unit is used in the cockpit....

 

I'm pretty sure its Km/h, but well.... It may be the source of my problem (I thought with Km/h and the gauge show me Kts).

 

I've just checked the documentation, and the gauge p133 is not the same as the one I have in game. No yellow mark for me for exemple.

 

That may explain why I sometimes have some difficulties to brake %-) (Too much speed).

[JG14_Smil]

Hello,

 

Gear down @ 340kmph, Flaps @ 310kmph, full flaps @ 260 kmph.

 

You need throttle at 80-85% and a VVI of -4 to -6.

 

The slowest jet in DCS takes a long time to speed up and slow down. Better early than too late.

Edited July 19, 2017 by JG14_Smil

[Art-J]

Thanks for your answer !

 

Anyway, I'm talking about Km/h (not Km/s like in my first post %-) ), but I'll have to check which unit is used in the cockpit....

 

I'm pretty sure its Km/h, but well.... It may be the source of my problem (I thought with Km/h and the gauge show me Kts).

 

I've just checked the documentation, and the gauge p133 is not the same as the one I have in game. No yellow mark for me for exemple.

 

That may explain why I sometimes have some difficulties to brake %-) (Too much speed).

 

I think I read somewhere here that instruments change between imperial and metric in the L-39 depending on avionics language set in general game options.

[Ramsay]

The type of Gauge and it's units depends on your Options\Gameplay\Units setting i.e. IAS: Imperial=knots, Metric=km/h

 

 

The L-39 has an air pressure switch that will disable or retract the flaps automatically @ 310 km/h (170 kt)

 

Final is 270 km/h (150 kt) decreasing to 220 km/h (120 kt) as you pass over the threshold.

Touchdown is at 185-200 km/h (100-110 kt)

 

Simulated Flame Out landing (throttle at idle).

 

 

High Key and Low Key are about 1/3 of the way down the runway (aligned with the planned touchdown point) and the landing/braking run also takes about 1/3 the runway - so you should have +/- 1/3 the runway length for an "error margin" in case of falling short or over shooting your planned touchdown point.

Edited July 19, 2017 by Ramsay

[MirabelleBenou]

Thanks a lot everyone ! That was it !

 

I was in Imperial but thought to be in Metric :)