Author Topic: Looking for a Turbofan engine  (Read 2373 times)

Offline Rickshaw

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Looking for a Turbofan engine
« 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?

Offline Jeffry Fontaine

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Re: Looking for a Turbofan engine
« Reply #1 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
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Offline Rickshaw

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Re: Looking for a Turbofan engine
« Reply #2 on: March 25, 2021, 03:24:34 PM »
This link that may be useful in your turbofan engine search: Nate Meier's Jet Engine Specification Database

Thanks.  That answers the question!

Offline GTX_Admin

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Re: Looking for a Turbofan engine
« Reply #3 on: March 27, 2021, 02:51:25 AM »
Western or Eastern?
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Offline Rickshaw

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Re: Looking for a Turbofan engine
« Reply #4 on: March 30, 2021, 01:06:33 PM »
Western or Eastern?

Western, approximately 12,000lb to 16000lb thrust available approximately 1970

Offline kitnut617

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Re: Looking for a Turbofan engine
« Reply #5 on: March 30, 2021, 10:09:27 PM »
CF34-8 or CF34-10, you'll find these on CRJ-700/900

Offline elmayerle

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Re: Looking for a Turbofan engine
« Reply #6 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.

Offline kitnut617

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Re: Looking for a Turbofan engine
« Reply #7 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

Offline GTX_Admin

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Re: Looking for a Turbofan engine
« Reply #8 on: April 03, 2021, 03:09:03 AM »
Options based upon being available in 1970 and with thrust range in 12K-16K lb range:

  • P&W TF30
  • Allison TF41
  • RR Spey
  • P&W JT8D or Volvo RM8 derivative
  • RR RB.203 Trent
  • RR/SNECMA M45G

I've left off large fans such as GE TF39/CF6, P&W JT9D or RR RB211.
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Offline GTX_Admin

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Re: Looking for a Turbofan engine
« Reply #9 on: April 03, 2021, 03:10:22 AM »
I do't believe the CF34 existed in the time frame specified.

Nah.  CF34 didn't run until 1982
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Offline M.A.D

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Re: Looking for a Turbofan engine
« Reply #10 on: May 20, 2022, 09:47:05 PM »
How did you go finding your turbofan engine Rickshaw?

MAD

Offline perttime

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Re: Looking for a Turbofan engine
« Reply #11 on: May 20, 2022, 11:21:23 PM »
Volvo RM8 (basically a Pratt & Whitney JT8D with afterburner)?

Offline M.A.D

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Re: Looking for a Turbofan engine
« Reply #12 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

Offline Rickshaw

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Re: Looking for a Turbofan engine
« Reply #13 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!

Offline perttime

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Re: Looking for a Turbofan engine
« Reply #14 on: May 23, 2022, 02:45:29 PM »
No turbojets like Rolls-Royce Avon?

Offline Rickshaw

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Re: Looking for a Turbofan engine
« Reply #15 on: May 26, 2022, 01:41:15 PM »
No turbojets like Rolls-Royce Avon?

No, it has to have a decent range so a Turbofan...

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Re: Looking for a Turbofan engine
« Reply #16 on: May 27, 2022, 01:16:30 AM »
Utilising a turbofan does not automatically equate to better range.
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Offline elmayerle

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Re: Looking for a Turbofan engine
« Reply #17 on: Yesterday at 03:52:46 PM »
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.

Offline Kerick

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Re: Looking for a Turbofan engine
« Reply #18 on: Today at 04:44:31 AM »
Iíve 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.