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Luis Hernandez

Flight idle?

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I've seen references everywhere to Flight Idle, but I can't find which value is this? Is this an EPR, N1, N2 or fuel flow value? Or is just a throttle position (I can't recall seeing any marking in the pedestal).

 

I've seen it's around 50-55%N1 for the 727, but which value is for the 732?


Best regards,
Luis Hernández 20px-Flag_of_Colombia.svg.png20px-Flag_of_Argentina.svg.png

Main rig: self built, AMD Ryzen 5 5600X @ 4.5 GHz 2x8 GB DDR4-3200 RAM, Nvidia GTX1650 4 GB, 256 GB M.2 SSD (OS+apps) + 1 TB SATA III SSD (sims) + 1 TB 7200 rpm HDD (storage), Viewsonic VX2458-MHD 1920x1080@30-144 Hz, Windows 10 Pro.  Runing P3D 4.5 and FSX-SE. XP11 Vulkan installed, but not yet tried. Will MSFS2020 run? If so, what do I do with 5 sims then?

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For flight idle just pull the throttles back to the stops. N1 values will be different dependent on your altitude... the higher you are the higher the idle N1 will be.

 

There is a consideration that you must have enough engine bleed to power the aircon packs , but what that number is is beyond me.


Peter Schluter

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As I know, EPR must be not less than 1.21 if Engine or Wing Anti Ice is activated.

 

Regards, Sebastian

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Thank you all. Now I got another question: in the Tinmouse, cruise is at 320 knots/M 0.74 AFAIK. For descent, should I let airspeed drop to any value before descending? Which value?


Best regards,
Luis Hernández 20px-Flag_of_Colombia.svg.png20px-Flag_of_Argentina.svg.png

Main rig: self built, AMD Ryzen 5 5600X @ 4.5 GHz 2x8 GB DDR4-3200 RAM, Nvidia GTX1650 4 GB, 256 GB M.2 SSD (OS+apps) + 1 TB SATA III SSD (sims) + 1 TB 7200 rpm HDD (storage), Viewsonic VX2458-MHD 1920x1080@30-144 Hz, Windows 10 Pro.  Runing P3D 4.5 and FSX-SE. XP11 Vulkan installed, but not yet tried. Will MSFS2020 run? If so, what do I do with 5 sims then?

Mobile rig: ASUS TUF FX504GD (Intel i5 8300H @ 2.3-3.7 GHz; 2x8 GB DDR4-2666 RAM; Nvidia GTX 1050 2 GB; 256 GB M.2 SSD + 1 TB SATA III SSD as storage; Windows 10 Home). Running FSX-SE and FS9 there.

Saitek X-52 as primary controller. Xbox 360 wired and eDimensional G-Pad Pro wired controllers as standby/travel. Fell in love with VKB Gladiator NXT Premium, now saving...  🙂

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I usually cruise at 0.78/0.80

 

Descent, like most aircraft should be done at cruise Mach speed , changing to IAS 280-320 when appropriate (FL280-300).


Peter Schluter

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As I know, EPR must be not less than 1.21 if Engine or Wing Anti Ice is activated.

 

Regards, Sebastian

EPR is irrelevant for Eng-Wing Anti-Ice

in descent keep N1 above 55% for use of anti-ice.

 

I usually cruise at 0.78/0.80

 

Descent, like most aircraft should be done at cruise Mach speed , changing to IAS 280-320 when appropriate (FL280-300).

normal econ cruise is .72

climb and descent is 250-280/.70

you can achieve a .72 with 2800lbs per engine


Gustavo Rodrigues - Brazil

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I usually cruise at 0.78/0.80

 

Descent, like most aircraft should be done at cruise Mach speed , changing to IAS 280-320 when appropriate (FL280-300).

 

Except on friday afternoon, in which case you are to ride the barber pole all the way down to 10000 ft. :lol:

 

 

(As read in a thread on flying the 727.)


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