Beyond The Sprues

Modelling => Ideas & Inspiration => Engineering Dept. => Topic started by: Rickshaw on March 25, 2021, 12:27:48 PM

Title: Looking for a Turbofan engine
Post by: Rickshaw on March 25, 2021, 12:27:48 PM
I'm thinking about doing a conversion, a single engined version of a twin engined jet.

I need a relatively powerful turbofan engine in the late 1960s-early 1970s, approximately 12,000 lbs thrust.  Does anybody know of any contenders?
Title: Re: Looking for a Turbofan engine
Post by: Jeffry Fontaine on March 25, 2021, 01:47:48 PM
This link that may be useful in your turbofan engine search: Nate Meier's Jet Engine Specification Database (https://www.jet-engine.net/)
Title: Re: Looking for a Turbofan engine
Post by: Rickshaw on March 25, 2021, 03:24:34 PM
Quote from: Jeffry Fontaine on March 25, 2021, 01:47:48 PM
This link that may be useful in your turbofan engine search: Nate Meier's Jet Engine Specification Database (https://www.jet-engine.net/)

Thanks.  That answers the question!
Title: Re: Looking for a Turbofan engine
Post by: GTX_Admin on March 27, 2021, 02:51:25 AM
Western or Eastern?
Title: Re: Looking for a Turbofan engine
Post by: Rickshaw on March 30, 2021, 01:06:33 PM
Quote from: GTX_Admin on March 27, 2021, 02:51:25 AM
Western or Eastern?

Western, approximately 12,000lb to 16000lb thrust available approximately 1970
Title: Re: Looking for a Turbofan engine
Post by: kitnut617 on March 30, 2021, 10:09:27 PM
CF34-8 or CF34-10, you'll find these on CRJ-700/900
Title: Re: Looking for a Turbofan engine
Post by: elmayerle on March 30, 2021, 10:11:39 PM
A JT8D variant is the first one that comes to mind, though I suspect there are other engines out there that would fit your criteria.  I do't believe the CF34 existed in the time frame specified.
Title: Re: Looking for a Turbofan engine
Post by: kitnut617 on March 30, 2021, 11:05:02 PM
Missed that note on the time period   :-X . What about a SNECMA M45G, military engine of 15,000 lbt
Title: Re: Looking for a Turbofan engine
Post by: GTX_Admin on April 03, 2021, 03:09:03 AM
Options based upon being available in 1970 and with thrust range in 12K-16K lb range:


I've left off large fans such as GE TF39/CF6, P&W JT9D or RR RB211.
Title: Re: Looking for a Turbofan engine
Post by: GTX_Admin on April 03, 2021, 03:10:22 AM
Quote from: elmayerle on March 30, 2021, 10:11:39 PM
I do't believe the CF34 existed in the time frame specified.

Nah.  CF34 didn't run until 1982
Title: Re: Looking for a Turbofan engine
Post by: M.A.D on May 20, 2022, 09:47:05 PM
How did you go finding your turbofan engine Rickshaw?

MAD
Title: Re: Looking for a Turbofan engine
Post by: perttime on May 20, 2022, 11:21:23 PM
Volvo RM8 (basically a Pratt & Whitney JT8D with afterburner)?
Title: Re: Looking for a Turbofan engine
Post by: M.A.D on May 22, 2022, 03:19:21 PM
Is your two-engine into one engine aircraft design big in terms of an export winner Rickshaw? The reason I ask, is depending on the origins of the given selected single turbofan is American, it could drastically effect such an export potential.

MAD
Title: Re: Looking for a Turbofan engine
Post by: Rickshaw on May 23, 2022, 12:09:41 PM
It is planned to be exportable and not American engined.  A good old fashioned well made Rolls Royce engine for me!
Title: Re: Looking for a Turbofan engine
Post by: perttime on May 23, 2022, 02:45:29 PM
No turbojets like Rolls-Royce Avon?
Title: Re: Looking for a Turbofan engine
Post by: Rickshaw on May 26, 2022, 01:41:15 PM
Quote from: perttime on May 23, 2022, 02:45:29 PM
No turbojets like Rolls-Royce Avon?

No, it has to have a decent range so a Turbofan...
Title: Re: Looking for a Turbofan engine
Post by: GTX_Admin on May 27, 2022, 01:16:30 AM
Utilising a turbofan does not automatically equate to better range.
Title: Re: Looking for a Turbofan engine
Post by: elmayerle on November 25, 2022, 03:52:46 PM
Quote from: GTX_Admin on May 27, 2022, 01:16:30 AM
Utilising a turbofan does not automatically equate to better range.
No, it doesn't.  You need to get both external and internal aerodynamics right and that sometimes gets more complicated than you'd expect.  I've been involved with some intake redesigns and there are a lot of variables to deal with in getting good, smooth airflow (if you are not likely to get smooth airflow, you need an engine that can take a lot of distortion - that's one of the main differences between the B-2's F118 and the F101 and F110.
Title: Re: Looking for a Turbofan engine
Post by: Kerick on November 26, 2022, 04:44:31 AM
I’ve heard that several plain ordinary sedans have better aerodynamics than say a super car like a Corvette. Even the older Corvettes had terrible aerodynamics and the new ones have to be even worse.