Author Topic: 20k Airfield Takeoff (Read 487 times)

FLS · « **on:** October 03, 2006, 10:29:49 PM »

When starting on a 20k airfield in the TA there is minimal power until you get rolling about 2 mph. You can toggle Wep to get going or just wait until you build your speed up to 2.

NHawk · « **Reply #1 on:** October 04, 2006, 08:30:44 AM »

Not a bug.

Few planes will get off the ground at 20k. That's why nobody in their right mind places airfields that high without a steep dropoff at the end of the runway.

FLS · « **Reply #2 on:** October 04, 2006, 05:04:07 PM »

If it's not a bug why do you jump from 0 to full manifold pressure at 2 mph? Is that normal aircraft performance at 20K? I would expect a more linear progression.

Major Biggles · « **Reply #3 on:** October 04, 2006, 05:33:32 PM »

Quote

Originally posted by FLS
If it's not a bug why do you jump from 0 to full manifold pressure at 2 mph? Is that normal aircraft performance at 20K? I would expect a more linear progression.

well the air is far thinner up there, and you need air coming through the intake for the fuel to burn properly. i guess it's that bad up there that you need some air flowing into the intake for the engine to actually start up properly

FLS · « **Reply #4 on:** October 04, 2006, 06:12:43 PM »

I see your point Biggles. When the engine starts up normally but runs at minimal manifold pressure, rolling forward at 2 MPH is a critical difference in airflow from sitting still with the propeller spinning and it accounts for the immediate progression to full power.

fuzeman · « **Reply #5 on:** October 04, 2006, 08:09:06 PM »

I did try this today and it definately reacts weird @20k.
Then again my Me163 would nose over and crash before wheels cleared the ground on auto-takeoff @20k also.

FBplmmr · « **Reply #6 on:** October 07, 2006, 07:17:14 AM »

thats why tibet doesn't have an air force:D

Noir · « **Reply #7 on:** October 10, 2006, 04:01:30 PM »

Tibet is not a nation (used to be)

Noir · « **Reply #8 on:** October 10, 2006, 04:03:57 PM »

Quote

Originally posted by fuzeman
I did try this today and it definately reacts weird @20k.
Then again my Me163 would nose over and crash before wheels cleared the ground on auto-takeoff @20k also.

and without auto-pilot ? autoclimb is rude and can have weird reactions. I'll try this tomorrow, If I remember well the KOTH map got 20k fields

fuzeman · « **Reply #9 on:** October 10, 2006, 04:47:41 PM »

Quote

Originally posted by Noir
and without auto-pilot ? autoclimb is rude and can have weird reactions. I'll try this tomorrow, If I remember well the KOTH map got 20k fields

That's a negative. All are sea level takeoffs although I can't say I ever used A3.
A1 and A2 are the usual fields we use. This referring to the new koth06 map.

Hmm, without autotakeoff, either I didn't try it or I forgot the result.
My $$$ on the second choice.