Aces High Bulletin Board

General Forums => Aces High General Discussion => Topic started by: AKcurly on March 11, 2002, 02:40:43 PM

Title: flap polars
Post by: AKcurly on March 11, 2002, 02:40:43 PM

One of our guys opined that HTC has a problem with flap polars.  He said it occurred uniformly across the plane set:  Too much drag for the first two notches of flaps and too little lift.

Anyone have an opinion about this?

curly

Title: Re: flap polars
Post by: akak on March 11, 2002, 03:25:46 PM

Quote

Originally posted by AKcurly
One of our guys opined that HTC has a problem with flap polars.  He said it occurred uniformly across the plane set:  Too much drag for the first two notches of flaps and too little lift.

Anyone have an opinion about this?

curly

Not with the P-38, at least that's been my experience.  I've been able to loop endlessly just using flaps.


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479th FG - Riddle's Raiders

Title: flap polars
Post by: Furious on March 11, 2002, 03:50:03 PM

I you folks flew LW planes more you wouldn't have these silly flap questions.

:D


F.

Title: flap polars
Post by: ra on March 11, 2002, 05:35:15 PM

I've always felt that there was not enough drag at full flaps.

ra

Title: flap polars
Post by: Zigrat on March 11, 2002, 08:43:38 PM

there is a very simple way to tell.

1) set a climb speed (use .speed ###) lets say a convient speed is uhmmmm 160 mph ias.

2) go to an altitude. pick a convient one. lets say  5000 ft.

3) engage climb.

4) let it climb for a few seconds. like 10-15 sec should be enough. engage the desired amount of flaps (test all of the flap settings)

5) reduce rpm to minimum.

6)hit e key to shut off engines


record sink rate (on climb rate indicator) as you pass back through the reference altitude for each flap setting. let me know what you get.

Title: flap polars
Post by: AKcurly on March 12, 2002, 03:09:00 AM

Quote

Originally posted by Zigrat
there is a very simple way to tell.

1) set a climb speed (use .speed ###) lets say a convient speed is uhmmmm 160 mph ias.

2) go to an altitude. pick a convient one. lets say  5000 ft.

3) engage climb.

4) let it climb for a few seconds. like 10-15 sec should be enough. engage the desired amount of flaps (test all of the flap settings)

5) reduce rpm to minimum.

6)hit e key to shut off engines


record sink rate (on climb rate indicator) as you pass back through the reference altitude for each flap setting. let me know what you get.

Ok. in the dhog, one notch of flaps gives a drop rate of about 1400 ft/min.  It's almost constant down to 5k.  Two notches of flaps gives about 1600 ft/min.

curly

Title: flap polars
Post by: Zigrat on March 12, 2002, 08:16:28 AM

whats 0 notches

Title: flap polars
Post by: AKcurly on March 12, 2002, 04:37:48 PM

Quote

Originally posted by Zigrat
whats 0 notches

1250

curly