scandinavian13

[08SEP16] Flight Planning Tools

19 posts in this topic

kyle,

Will you be so kind to direct me to the correct documentation and possible paragraph/page?

 

Thanks in advance and kind regards

Dirk Karmelk

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On 18.5.2017 at 10:32 PM, Quink said:

The DC-7 had what was, at least at that time, the most powerful and complicated propeller engine in history. It had an engine power optimizer lacking on the DC-6 which allowed it to operate economically at much higher altitudes. The engine section that permitted this increase in altitude was called the "Power Recovery Turbine or "PRT".

It's called turbo compound.. the energy from the exhaust is extracted by a turbine (like in a turbocharger), but instead of compressing air for the engine with it, the turbine is mechanically linked to the crankshaft through a reduction gear.

I read a bit about it when I did some research about the DC-6 (and came across the DC-7 then). Interestingly, I found out this technology still exists in ships, and according to another website Volvo and Scania use it for their trucks.

The P&W R4360 in the Boeing 377 also was a beast, with super- and turbochargers they went up to FL300.. and were around 100kt faster the the '6', despite their not so appealing shape.

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11 hours ago, karmelk said:

Will you be so kind to direct me to the correct documentation and possible paragraph/page?

Open the Intro Manual and hit CTRL+END. It'll bring you right there, as it's the last page of the document. The Table of Contents, which references PFPX and links to the page, would also bring you there.

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