Author Topic: Hurri I and negative G engine shotdown (Read 729 times)

Xjazz · « **on:** August 30, 2003, 05:27:44 PM »

Hi,

I have a fly lately Hurri I alot. Few times I had engine shotdown during the fight I had to hit E-key to start engine again.

I use hotas and engine toggle function is not programmed to the stick or throttle.

I had try reproduce this mystery shotdown in offline with 0G (or bit less) and with allmost full redout paradolic flight path.
I try to push as long as possible 0G or less.

No success so far, because every time I pull out from dive (end of parabolic) engine start again.

Anybody else has same expirience with Hurri I?

DiabloTX · « **Reply #1 on:** August 30, 2003, 07:28:53 PM »

Yes. Neg G's in a Hurri I (or a Spit I for that matter) cuts the engines out. It's an historic detail that AH added.

At least that's what I THINK is causing what you are experiencing.

BenDover · « **Reply #2 on:** August 30, 2003, 07:35:39 PM »

I think he's saying that sometimes the engine cuts out, and doesn't come back on even when he pulls back up.

Xjazz · « **Reply #3 on:** August 30, 2003, 07:52:57 PM »

Quote

Originally posted by BenDover
I think he's saying that sometimes the engine cuts out, and doesn't come back on even when he pulls back up.

Jep, question is NOT about the enige cutout during the 0G or less maneuver. Question is why engine shotdown/off?

Shane · « **Reply #4 on:** August 30, 2003, 07:55:29 PM »

floating carb.

DiabloTX · « **Reply #5 on:** August 30, 2003, 09:52:42 PM »

Shane, are you saying that extended Neg G's kills the engine dead because of it's floating carb? What I mean is that an extended Neg G kills the engine to the point where it won't come back on unless you restart the engine?

Pei · « **Reply #6 on:** August 30, 2003, 10:59:40 PM »

I'd imagine that if the engine is dead for long enough you would need to restart it from scratch. Not sure if this is modelled though.

hyena426 · « **Reply #7 on:** August 31, 2003, 03:42:24 PM »

ya,,shane is right on the money,,its because the gas is not forced down in the motor on hurrican 1,,,thats why fuel injection was put on most air planes,,floating carbs like on a car,,,gas cant flow under negivtive g's,,either can any liqiud,,thats why most planes have pressurized gas tanks and fuel injection too,,,so it pushes the gas down into the cylinders

MiloMorai · « **Reply #8 on:** August 31, 2003, 09:44:55 PM »

The early Hurricanes and Spitfires had the engine cut-out under neg G because the engine flooded.

There was a hichup initially but the float valve open completely when the a/c inverted and allowed fuel under pressure from the pump to enter the induction system resulting in an overly rich condition.

The problem was fixed by a female engineer named Tilley.

MiloMorai · « **Reply #9 on:** August 31, 2003, 09:46:04 PM »

The early Hurricanes and Spitfires had the engine cut-out under neg G because the engine flooded.

There was a hichup initially but the float valve open completely when the a/c inverted and allowed fuel under pressure from the pump to enter the induction system resulting in an overly rich condition.

The problem was fixed by a female engineer named Tilley.

DiabloTX · « **Reply #10 on:** August 31, 2003, 10:24:02 PM »