Aces High Bulletin Board

General Forums => Aircraft and Vehicles => Topic started by: LLv34_Snefens on January 24, 2003, 07:40:04 PM

Title: The one that said that the La7...
Post by: LLv34_Snefens on January 24, 2003, 07:40:04 PM: was a bad performer at high alt was SOOOOO wrong.

During a test on another matter I took an La7 up to 40.000 ft and leveled her off. Much to my suprise it just kept going faster and faster and... Well I stopped once it reached 520MPH!!! :eek: (much faster and it would have disintigrated from the shaking).

Hehe, ok it's true that it above 37K acts like it's on steroids, but under normal conditions this never will come into play. It's climb simply drops to so low a value that it wouldn't be able to cross the "magic" line. :)

__________________
Ylil. Snefens
Lentolaivue 34 (http://www.muodos.fi/LLv34)
My AH homepage (http://home14.inet.tele.dk/snefens/index2.htm)
(http://home14.inet.tele.dk/snefens/209.gif)
Title: another dimension?
Post by: joeblogs on January 24, 2003, 07:53:26 PM: don't you think you should be able to take it supersonic?
Title: The one that said that the La7...
Post by: Glasses on January 24, 2003, 08:17:27 PM: And they said the Fm for the la7 is perfect... :rolleyes:
Title: The one that said that the La7...
Post by: J_A_B on January 24, 2003, 08:30:32 PM: Considering that the LA7's service ceiling (100 FPM) is like 35K and its absolute ceiling can't be much higher, it's pretty clear that the FM alone wasn't responsible to let the plane get that high.

In the MA, you'd run out of fuel before reaching that altitude.

What was the wind set to Snefens? :)

J_A_B
Title: The one that said that the La7...
Post by: GRUNHERZ on January 24, 2003, 10:44:32 PM: Who cares, la7 sucks... :)
Title: The one that said that the La7...
Post by: Airscrew on January 25, 2003, 12:32:23 AM: La7 Sucks? Ok well then that explains why all those planes were behind me Thursday night between A4 and A5. I thought they chasing me, I guess they just got trapped in my vacuum:D
Title: The one that said that the La7...
Post by: LLv34_Snefens on January 25, 2003, 05:34:39 AM: J_A_B, like I said this will never happen in the arena. To get to that alt I set wind to 127 mph up.
I was just testing fuel consumption at extreme alts, when I noticed I actually was going pretty fast. :)

BTW, the La7's manifold pressure never starts to drop like for instance the 109 or p47.
Title: The one that said that the La7...
Post by: GRUNHERZ on January 25, 2003, 11:15:43 AM: If the La7 is so good why were you running away? :)
Title: The one that said that the La7...
Post by: udet on January 25, 2003, 12:19:08 PM: LA7 model IS porked.
Title: Re: The one that said that the La7...
Post by: frank3 on January 25, 2003, 12:34:31 PM: Quote
Originally posted by LLv34_Snefens
was a bad performer at high alt was SOOOOO wrong.

During a test on another matter I took an La7 up to 40.000 ft and leveled her off. Much to my suprise it just kept going faster and faster and... Well I stopped once it reached 520MPH!!! :eek: (much faster and it would have disintigrated from the shaking).

Hehe, ok it's true that it above 37K acts like it's on steroids, but under normal conditions this never will come into play. It's climb simply drops to so low a value that it wouldn't be able to cross the "magic" line. :)

__________________
Ylil. Snefens
Lentolaivue 34 (http://www.muodos.fi/LLv34)
My AH homepage (http://home14.inet.tele.dk/snefens/index2.htm)
(http://home14.inet.tele.dk/snefens/209.gif)

wow! it actually reached 520mph?? thats damn fast!
could you explain why it can?
Title: The one that said that the La7...
Post by: SLCR on January 25, 2003, 01:07:36 PM: PERK IT PERK IT PERK IT PERK IT PERK IT
PERK IT PERK IT PERK IT PERK IT PERK IT
PERK IT PERK IT PERK IT PERK IT PERK IT
PERK IT PERK IT PERK IT PERK IT PERK IT
PERK IT PERK IT PERK IT PERK IT PERK IT
PERK IT PERK IT PERK IT PERK IT PERK IT
PERK IT PERK IT PERK IT PERK IT PERK IT
PERK IT PERK IT PERK IT PERK IT PERK IT
PERK IT PERK IT PERK IT PERK IT PERK IT
PERK IT PERK IT PERK IT PERK IT PERK IT
PERK IT PERK IT PERK IT PERK IT PERK IT
PERK IT PERK IT PERK IT PERK IT PERK IT
PERK IT PERK IT PERK IT PERK IT PERK IT
PERK IT PERK IT PERK IT PERK IT PERK IT
PERK IT PERK IT PERK IT PERK IT PERK IT
PERK IT PERK IT PERK IT PERK IT PERK IT!

:)

-Slicer
Title: The one that said that the La7...
Post by: J_A_B on January 25, 2003, 04:11:03 PM: "could you explain why it can?"

Probably flightmodel wierdness caused by the fact that he was flying above the airplane's ceiling :)

As he's been saying, it can't happen in the MA--you can't get that high.

J_A_B
Title: The one that said that the La7...
Post by: Angus on January 25, 2003, 06:47:02 PM: An La-7 with headwind or not would never make it up to 40K
So, definately the FM, or rather the engine modelling needs some polishing by HTC.
Title: The one that said that the La7...
Post by: Karnak on January 25, 2003, 07:36:20 PM: Angus,

The La-7 in AH cannot get to 40k unassisted. He didn't use a 127mph head wind, he used a 127mph wind that was heading straight up, lifting the La-7 with it. I use this technique all the time for offline altitude tests so that I don't have to wait for the aircraft to climb to thw desired altitude.

I would suspect that the La-7 behaves weirdly because it doesn't even have a flight model up there as it can't get up there. It might be using default performance figures.

I also recall that the C-47 behaves weirdly when you get it to 40,000 or 50,000ft.
Title: The one that said that the La7...
Post by: Nilsen on January 26, 2003, 03:05:08 AM: LA7 ? :confused:

Ohh.....you mean the "no skill needed, fly-by-wire F16 clone always running from somethin".....havent flown it for a year but im not suprised.