bac 111 engine switch off

[railman023]

can anybody help ive got a problem with my Maultby BAC111 just after take off it shuts both engines down and the plane crashes into the ground ive had this problem with all my 111s on both fs9 and fsx i also get a bliping noise as i run up to full power for take off

[DaveB]

Hi railman023..

It sounds like there's so much wrong with what you're doing.. I don't know where to start

OK.. first things first.
Have you read the manual?? I'm guessing not :roll:

The beeping noise you hear on takeoff when you open the throttles is an indication that the aircraft is NOT CONFIGURED FOR TAKEOFF. Use the intuitive (I can't say this word any simpler) checklist looking for red 'X' or blue 'TICKs'. You either don't have T/O flap selected or (more likely) the aircraft is not trimmed. You have to TRY and fly this as it would have been flown.

Next..
You takeoff then fall out of the sky...
You've just burned out the engines. I can't say that any simpler either.
You will have seen (and ignored) warning lights come on on the centre panel and as it happens.. these indicate 'OVER TEMPERATURE'. Throttle back and the warning lights will go out. Keep the temp gauge in the yellow.. NEVER in the red and you'll be fine.

DaveB :tab:

[railman023]

Thanks Dave i think i maybe cooking the engines i do give it full power on take off will have to try it again thanks

[DaveB]

No problem railman. You'll get used to knowing just how much throttle to give but just in case (and we all do this from time to time).. if you see the warning lamps come on.. throttle back (just enough) to get the lights out again. The temp gauges are the best indication though. Yellow is fine.. Red is not so good.. ok for a moment or so but get it back into the yellow as soon as you can ;-)

Look for a '+' trim of anywhere between 2.5 and 4deg to get the blue 'tick' to appear

Remember..
Flightsim will ALWAYS load the aircraft full of fuel.. not just the 1-11 but ALL aircraft ;-)

ATB

DaveB :tab:

[shc_04]

As far as i know if you switch two top temp switch to the on then you can never overheat the engines. Top temp switches are located on the pedestial.(only vc view you can see them)

Sorry for my english.

[Garry Russell]

Cheers shc_04

Railman....

Top temp switches are a great help unless you need that extra but have to be quick to pull back the power

They can be found easily in the VC




Garry

[Paolo Lao]

I also have this problem before, after or during takeoff, I switch on the water inject to provide extra cooling :flying:

[TSR2]

Hi Paolo,

Water injection doesn't provide cooling. It provides more boost!!!

[Nigel H-J]

:think: Ben, here was me thinking that the water injection helped with the cooling

Having taken off with full power in very hot climes many times with 80 - 100% fuel loading, when the lights have illuminated and water injection selected to on, the lights extinquished and engines had never failed

Guess I may just be very lucky!! :prayer:

Nigel.

[Chris Trott]

Ben's explanation is definitely a more accurate description. Water Injection simply adds density to the air mass flowing through the engine, allowing for a greater amount of thrust to be produced for a given ambient (OAT) and internal temperature (EGT or TIT) versus a "dry" engine as more "fluid" is moving through the engine, not necessarily because the engine is running cooler. What you see on the gauges is an apparent "cooling" of the engine, but what you're actually seeing is that for the same power (100%) you're gaining thrust so the engine isn't working as hard and as a consequence there is an apparent reduction in temperature as it thinks it's operating in much more dense air. On aircraft that use EPR as the takeoff thrust setting, this is even more apparent as the activation of water injection causes a substantial reduction in EPR (the difference in inlet pressure and exhaust pressure is closer together since the inlet air is now much denser), causing you to push the throttles forward. Any cooling gains are simply from the increase in mass flow through the engine, not because of the water itself.