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[INVESTIGATING] Idle Thrust Taxi Speed


lukeXIII

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Before open beta update 2.5.6.60966, taxi speed under idle thrust could be controlled by adjusting nozzle angle between 45 and 60 degrees as per the NATOPS manual. For example a nozzle angle of around 45 degrees used to give a stable taxi speed of 15 knots. 

 

Post update it is impossible to control taxi speed with nozzles less than 60 degrees. To compare above, setting the nozzles to 45 degrees will now accelerate up to and past 50 knots.

 

Quote

Fixed: ground roll stutter when moving from stopped position

 

It seems this fix has greatly reduced or completely removed ground friction.

taxi_nozzles_45.trk


Edited by lukeXIII
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16 hours ago, lukeXIII said:

Before open beta update 2.5.6.60966, taxi speed under idle thrust could be controlled by adjusting nozzle angle between 45 and 60 degrees as per the NATOPS manual. For example a nozzle angle of around 45 degrees used to give a stable taxi speed of 15 knots. 

 

Post update it is impossible to control taxi speed with nozzles less than 60 degrees. To compare above, setting the nozzles to 45 degrees will now accelerate up to and past 50 knots.

 

 

It seems this fix has greatly reduced or completely removed ground friction.

taxi_nozzles_45.trk 102.2 kB · 2 downloads

 

Yep, you're right...
 

 

 

idle speed test.trk


Edited by felixx75
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Tracking the issue, FM noticed this and is waiting to hear from ED if theres a correct weight calculation when moving forward. What are you loaded with?

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Know and use all the capabilities in your airplane. If you don't, sooner or later, some guy who does use them all will kick your ass.

 

— Dave 'Preacher' Pace, USN.

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  • RAZBAM_ELMO changed the title to [INVESTIGATING] Idle Thrust Taxi Speed
13 hours ago, RAZBAM_ELMO said:

Tracking the issue, FM noticed this and is waiting to hear from ED if theres a correct weight calculation when moving forward. What are you loaded with?

Only fuel, but it's nearly the same with bombs or any other loadout.


Edited by felixx75
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  • 2 months later...

Has this been tested with the new thrust adjustment in previous patch?

 

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Now the Harrier still will start to roll after releasing the (parking-) brakes, but only extremely slow and it seems not to accelerate. You need a little bit of an initial thrust. Short up to 50%, then back to idle thrust (~29%), then it will start to accelerate. Not at the same rate as in 2.5.6 but I reached 82 knots at the end of the runway (13 knots less than in 2.5.6).

 

idle speed test 2_7.trk

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