All Questions
Tagged with performance-calculation descent
5 questions
5
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2
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973
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Can the energy dissipated in a power-off descent be calculated and expressed in horsepower?
If the weight in pounds of an aircraft is known along with its sink rate in feet per minute at best power-off glide conditions, can the horsepower being dissipated by drag as the plane descends via ...
- 22.2k
4
votes
2
answers
407
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Are there more refined rules-of-thumb for Top of Descent calculation, than the simple FL x 3?
Forgetting the excellent capabilities of VNAV for a moment and reverting to simpler days, is there a rule of thumb to further refine the FL x 3 rule for Top of Descent calculation, when there are ...
- 577
0
votes
2
answers
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How do we calculate top of descent (TOD) in flight? [duplicate]
What is the in-flight trick?
I know how to calculate it in theory, but how can I calculate it fast? For example, I know I can use this formula for calculating the rate of descent:
[ground speed + ...
- 890
6
votes
4
answers
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What is the maths behind the descent rate calculation?
The descent rate calculation states that descent rate is calculated by 'groundspeed / 2 * 10'.
Another document stated that the ground speed should be multiplied by 5 (or more accurately 5.2) to ...
user16863
2
votes
1
answer
9k
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How does the FAA compute the values in TPP's Climb/Descent Table?
The inside back cover of the FAA Terminal Procedures Publication contains a table headed “CLIMB/DESCENT TABLE,” excerpted below.
Source: FAA, p. 19
How do required ascent or descent ...
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