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ATR glide ratio

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fruitfly View Drop Down
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Joined: November-04-2004
Location: Croatia
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Post Options Post Options   Thanks (0) Thanks(0)   Quote fruitfly Quote  Post ReplyReply Direct Link To This Post Topic: ATR glide ratio
    Posted: January-05-2005 at 1:47pm
What is it???
7:1?
More??

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Christian View Drop Down
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Joined: November-02-2004
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Christian Quote  Post ReplyReply Direct Link To This Post Posted: January-07-2005 at 4:09pm

i had dual engine flameout in my last simu session.......

As far as i remember, with drift down speed (around 125 IAS) the descent rate was around 800 ft/min (with feathered engines) .

 

 

best regards

Christian

ex Cpt ATR72 , ex Cpt BAe146, now CRJ Cpt , Germany
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Ramjager View Drop Down
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Joined: December-28-2004
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ramjager Quote  Post ReplyReply Direct Link To This Post Posted: January-08-2005 at 12:10am

Hi Christian

Sounds like my last Dash sim.

Dual flameout at night glide 35nm from FL230 to land in the dark.

Good fun!!

How many sims do you do a year there.We are in every3 months.

What sort of distance plan do you have in the ATR we have a 2:1 based off altitude for the Dash.

Seeya

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bisinchi View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bisinchi Quote  Post ReplyReply Direct Link To This Post Posted: January-10-2005 at 1:45pm

Originally posted by fruitfly fruitfly wrote:

What is it???
7:1?
More??

I guess it means that for every 7 miles you go horizontally, you would loose 1 mile vertically. I may be wrong!!

Francois

 

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ResidentPhysicist View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ResidentPhysicist Quote  Post ReplyReply Direct Link To This Post Posted: April-08-2022 at 3:51pm
From this sink rate and ktas you'd get a glide ratio of 15.8:1, this is also a L/D ratio. It seems reasonable. The 2015 paper 'Is "Green Dot" Always the Optimum Engines-Out Glide Speed on the Airbus A320 Aircraft' suggests 17:1 for the A320ceo, so for a regional airliner with higher AR 15.8:1 sounds a bit low. Still possible though. It's definitely higher than 7:1
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