Systems questions

[ChessieN]

Hello everyone,

these are just a few little questions about small quirks I have seen with the plane since I started flying it.

1. Why is the load on gen 1 (and therefore bus 1?) significantly higher than gen 2? If each side powers "half" of the redundant systems (eg one side powers ec hyd pump 1 and the other 2) should their load not be the same?

2. What's the normal oil pressure at Cruze? At 80% n1, I'm seeing it right on the edge of the yellow, with like 60-65% oil capacity. Is there any way to refil the fluids?

 

[Hotdawg]

There is no paralleling of the AC sources of power. If you have uneven loads on each bus that is what you see on the gauges. Normally the loads are "about" the same.

Normal oil pressure should be about 45 to 50 psi in cruze. 

[ChessieN]

I'm only getting about 27-30 psi. Ill do some digging once I'm on the ground.

 

[apilot53@aol.com]

A lot of the engine parameters are not accurate yet.  You will notice the egt's are unrealistically low as well along with the oil temperature when the engines are brought to idle.

[Cameron]

19 minutes ago, apilot53@aol.com said:

A lot of the engine parameters are not accurate yet.

Define "a lot" please.

[apilot53@aol.com]

22 hours ago, Cameron said:

Define "a lot" please.

As mentioned in my post, The EGT values are too low, for example, cruise egt should be in the 600's not the 400's.  Oil temp and pressure are too low, specifically oil temp should not drop so fast to zero degrees as soon as the engines are brought to idle, and should never hit zero during operation, Im sure there is an oil temp thermostat somehere that regulates the temperature, if the oil was continuously at that low temperature aside from a cold start in real life the engine would be toast.  CSD drive oil temp doesnt move either.  And fuel flow drops to zero when the engines are brought to idle at high altitude.  Those are just the ones I have noticed.  

The actual behavior of the engines seems spot on however, especially how when advancing the throttle the engines are slow to spool up to around 35%, but then spool fast after that.  So far IXEG is the only addon I have used that simulates this behavior of the CFM56 accurately.