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Re: [OM] OT: One for Chris T

Subject: Re: [OM] OT: One for Chris T
From: Chris Barker <ftog@xxxxxxxxxxxxxx>
Date: Sat, 30 Nov 2019 14:45:34 +0000
Eeek!  Particularly at night, I should think!

Chris

> On 26 Nov 2019, at 22:13, Chris Trask <christrask@xxxxxxxxxxxxx> wrote:
> 
>  The Allison engines in the C-130E/H had an interesting failure.  One or more 
> compressor disks would separate from the shaft, resulting in flames shooting 
> out the inlet.  It didn't happen very often, but when it did it would scare 
> the living daylights out of everyone.
> 
>> 
>> Yes, a fault in the engine that spoiled the flow might cause a stall and 
>> surge.
>> 
>> In aircraft that I’ve flown there were built-in faults which meant that 
>> you avoided the regime of risk – airspeed, altitude, rate of throttle 
>> movement.  The horrible Pratt and Whitney in come models of F16 had 
>> limitations like that, but that came with the mechanical controls.  The 
>> later engines with digital control were much more pilot-friendly.
>> 
>> The Adour engine in the Jaguar would surge if you tried to light the 
>> burner above about 15,000ft; the RB199 in the Tornado would give you 
>> similar bangs but it normally meant that something had gone wrong with 
>> the bits inside, like a vapourised turbine blade :-)

-- 
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