Skip to content
View in the app

A better way to browse. Learn more.

The AVSIM Community

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

747-400 fuel flow: What to adjust and where ?

Featured Replies

I've tweaked the fuel flow scalar of most of my 747-400s so that they closely reflect Boeing book values at StAt. But I find that if I remain at a set FL for several hours, the rate at which fuel is burned does not decrease as fast as the Boeing data indicate, i.e., I am burning too much fuel than I should be.Do I need to change the fuel flow "gain" factor to fix this? If so, which way does it go? It seems to be set for many jets at 0.002 although some folks have set theirs to 0.001. These are very tiny values and I am wondering in which direction to adjust the gain to reduce the rate at which fuel is consumed.Appreciate any advice on this, thanks!JS

Jonathan Sacks

Dell XPS Gen 4, Pentium IV Northwood extreme 3.8Ghz, 3Ghz RAM, eVGA 7900 GTO,

12 GoFlight modules plus MCP-PRO AP and EFIS, GF pedestal, CH rudder pedals,

CH throttle quadrant, 42" LG LED, 24" DELL LCD, Windows XP, FS2004, FSUIPC 3.96

FS Autostart 1.1 (Build 11), FS Navigator 4.6, UT, FE, GE, REX, PMDG, Level-D, PSS, etc.

I think most here agree that fuel flow gain affects the spool up rate, not the consumption, so I think you need to concentrate on the fuel flow scalar value.

Create an account or sign in to comment

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.