Description
Top of descent calculator.
This simple program calculates your top of descent. It tells you how many miles before your destination to begin your descent according to your inputs.
installation:
run the setup exe in the zip file.
Note:
To update, first uninstall TOD calculator in control panel>programs and features, then run the setup.
Comments(14)
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Log Inabout 5 years ago
about 5 years ago
almost 5 years ago
TOD = Altitude to loose x 3 + deceleration segment
ROD = Groundspeed x 5
Deceleration (works fine for most jets):
Without speedbrakes: 2 nm per 10 kts during 1000 fpm descent or, 1 nm per 10 kts in level flight.With speedbrakes: as above divided by 2.Props (including turboprops) have no trouble slowing down while following a 3 degree path, for turboprops there is also a rule of thumb for that:
Works perfect in real life, have been using it for over 10 years no application needed.
about 5 years ago
Greetings and thanks again for the tool.
TOD calculator
Calculate your top of descent accurately with this simple program. Input your details to determine the ideal point to begin your descent before reaching your destination. Easy installation process included in the zip file for your convenience.
User Reviews
2 reviews
More Information
Version History
-Average descent ground speed entry added
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about 5 years ago
I've used a simple rule of thumb for descent rate. I've taken ground speed X 5 as an estimate. So if my approach speed is 90 kts, I'd aim for a descent rate of 45p fps (400-500 fps). Or a slow craft with a landing speed of 60 kts I aim for 300 fps.
Is this totally off?