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-   -   Boeing B717 reversers (https://www.pprune.org/tech-log/652554-boeing-b717-reversers.html)

edetroit 30th Apr 2023 22:06

Boeing B717 reversers
 
Hello All,

A friend of mine is modelling a B717. We are a bit stuck for information and photographs of the B717 reversers (especially the innards)

There appears to be two types of RR engines that powered the B717. BR715-A1 and BR715-C1, I'm guessing this might explain the slight difference in reversers.

I have searched and searched for closeups of these reversers but had not joy.

I thought I'd ask here to see if anyone fancies sticking their head inside a BR715 with a digicam or had any more info or pics please.

Regards

Ed

Zar_1 1st May 2023 16:21

What software are y'all modelling on, if I may ask?

If you need any help with it, I'd be glad to do so :) Tho I don't have the pics of the reversers.

edetroit 3rd May 2023 09:48

Thank you for your reply.
We are using Gmax.
Don't need any help with the modelling, just information/pics about the reversers.

Regards

Ed

DaveReidUK 3rd May 2023 12:25


Originally Posted by edetroit (Post 11428225)
There appears to be two types of RR engines that powered the B717. BR715-A1 and BR715-C1, I'm guessing this might explain the slight difference in reversers.

I have searched and searched for closeups of these reversers but had not joy.

If it's any help, the BR700-715 TC quotes the same Boeing part number (715-0021-505) for the thrust reverser on all variants of the engine (-A1, -B1 and -C1).

edetroit 3rd May 2023 17:15


Originally Posted by DaveReidUK (Post 11429473)
If it's any help, the BR700-715 TC quotes the same Boeing part number (715-0021-505) for the thrust reverser on all variants of the engine (-A1, -B1 and -C1).

Okaaayy. But these reversers look different.


https://cimg9.ibsrv.net/gimg/pprune....996c1c7c67.jpg
https://cimg2.ibsrv.net/gimg/pprune....e6c242fdb3.jpg


Capn Bloggs 4th May 2023 00:15


There appears to be two types of RR engines that powered the B717. BR715-A1 and BR715-C1, I'm guessing this might explain the slight difference in reversers.
As far as I am aware, the engines are the exactly the same. The A version had the low-thrust chip (18.5klb) and the C had the high-thrust chip (21klb). We used to swap chips as the seasons changed and we needed more grunt in the bush.

That IMP picture is very old; Impulse handed over it's 717s to Qantas in the early 2000s, so the components (which do look different, I agree) may have changed over time.

tdracer 4th May 2023 01:15

It's very common that when an engine gets a thrust upgrade, all future build engines (and engine hardware) get any necessary improvements to handle the higher thrust loads - that becomes the new 'standard'. There will be an associated Service Bulletin to upgrade any older engines and engine hardware to the new standard - incorporation of said S/Bs is a prerequisite to using the higher thrust rating on any older engines.
Since the differences between the two reversers appears minor, I suspect one is the older mark that doesn't have the higher thrust rating capability improvements incorporated.

edetroit 4th May 2023 08:31

Thank you very much Capn Bloggs and tdracer.

You have cleared it all up for us.

Regards

Ed

DaveReidUK 4th May 2023 12:37

You're welcome.

edetroit 4th May 2023 20:40


Originally Posted by DaveReidUK (Post 11430070)
You're welcome.

My apologies DaveReidUK, I should have thanked you as well.

Regards

Ed


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