baje427
Topic Author
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Dash 8 Q Series

Mon Aug 01, 2011 5:29 am

Hi,


I have a couple of questions i have become fascinated with the Dash 8 series over the years and always had these questions hopefully I can have them answered here.

1) Other than the Active noise vibration system and avionics were they are other upgrades to the Q series for example what would separate a 1990 Dash 8-300 vs a 2000 built one?.

2) Why did Bombardier not apply the Q400 cockpit to all other versions?

3) Why did Bombardier not switch to six blade props for the older generation Q200 and 300?

4) Is the catering door on the Q300 regularly utilised?


Thanks for any answers you can provide
 
LimaFoxTango
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RE: Dash 8 Q Series

Mon Aug 01, 2011 5:48 pm

I'll take a stab at this as a Dash driver.

Quoting baje427 (Thread starter):
1) Other than the Active noise vibration system and avionics were they are other upgrades to the Q series for example what would separate a 1990 Dash 8-300 vs a 2000 built one?.

Basically, its all the same. Off the top of my head, there were mods done to the hydraulic system, the interior, ie redesigned overhead bins and seats. From a pilot standpoint, they're about 99% simular.

Quoting baje427 (Thread starter):
2) Why did Bombardier not apply the Q400 cockpit to all other versions?

Quick answer would be cost. Bombardier moved around quite a bit of things in the Q400. Field Aviation just acquired a STC for a redesigned 100/300 cockpit to bring it inline with todays technology. http://fieldav.com/aircraft-modification/avionics-modification.aspx

Quoting baje427 (Thread starter):
3) Why did Bombardier not switch to six blade props for the older generation Q200 and 300?

Different engine altogether. The Q400 has a 5000shp PW150 engine versus the 1800-2500shp PW120/123 on the 100/300.

Quoting baje427 (Thread starter):
4) Is the catering door on the Q300 regularly utilised?

Very much so! The galley for the 300's are at the back of the aircraft so it comes in very handy. Catering can be loaded/offloaded without having to disrupt the boarding process. It also comes in great to ventilate the cabin when open on hot days. There are a few 300's out there without a rear service door. The galley for those aircraft are at the front similarly to the 100's. LI has two.


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baje427
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RE: Dash 8 Q Series

Fri Aug 05, 2011 2:58 am

Thanks for your response but ATR upgraded their 500 series to 6 blade props was Bombardiers decision simply cost driven not to upgrade to the 6 blades.
 
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Starlionblue
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RE: Dash 8 Q Series

Fri Aug 05, 2011 3:57 am

Quoting baje427 (Reply 2):
Thanks for your response but ATR upgraded their 500 series to 6 blade props was Bombardiers decision simply cost driven not to upgrade to the 6 blades.

As LimaFox Tango says, you can't just change the blades. The solution has to work with the engine. The ATR42-500 does not have the same engine as the earlier marks.
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo
 
MHG
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RE: Dash 8 Q Series

Sun Aug 14, 2011 5:29 pm

Don´t forget that the weight of a 6-blade-prop is not the same as a 4-blade one. Especially on smaller aircraft the difference in weight might be an issue.
The -100/200/300 series were designed much earlier than the -400 series.
So, additional weights and loads/forces on the engine mounting etc. might exceed calculated loads/forces in certain operational circumstances.

It´s not like a manufacturer can simply switch somthing like a prop without extensive modifications even if they´re not visible from outside ! And here come $$$$$ into play whether or not it´s worth the investment.

At the time Bombardier decided to shut down the -Q100/200/300 production (and focus solely on the -Q400) there was no incentive to further upgrade the remaining aircraft on the production line.
Remember that Bombardier had already "refurbished/upgraded" the 100/200/300 series to the "Q" standard but new orders came in less than anticipated. So, no money was "wasted" for further upgrades with "uncertain return of investment"
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baje427
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RE: Dash 8 Q Series

Sun Aug 21, 2011 5:04 pm

Thanks for the replies guys I would of liked to have seen the Q300 and Q200 updated perhaps like the Twinotter the older Dash might make a return.
 
MHG
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Joined: Mon Dec 13, 2004 1:33 am

RE: Dash 8 Q Series

Sun Aug 21, 2011 8:20 pm

Quoting baje427 (Reply 5):
perhaps like the Twinotter the older Dash might make a return.

In theory that´s possible because Vikingair has not only the right to build the Twin Otter but also the Dash-7 and all Dash-8 series exept the -400 which remains exclusive to Bombardier
I miss the sound of rolls royce darts and speys
 
LimaFoxTango
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RE: Dash 8 Q Series

Mon Aug 22, 2011 12:43 am

Quoting baje427 (Reply 5):
Thanks for the replies guys I would of liked to have seen the Q300 and Q200 updated perhaps like the Twinotter the older Dash might make a return.


It is my understanding that Bombardier has proposed a refurbishment package to airlines operating 100/200/300's which would include an all new cabin interior, perhaps similar to that of the Q400's. As for the flight deck, Field Aviation in Canada is offering an updated flight deck package to include 5 EFIS screens and other improvements. See Field Aviation: Avionics Modification. So if airlines take both packages, the 100/200/300's could be around for quite a while.
You are said to be a good pilot when your take-off's equal your landings.
 
gigneil
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RE: Dash 8 Q Series

Mon Aug 22, 2011 1:27 am

I'm not sure the demand for the smaller turboprops warrant a revamp of the smaller Dashes at this time, but I was just thinking about all this the other day.

There is a modern alternative in the ATR42-600.

NS

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