SSP76 Posted August 8, 2021 Share Posted August 8, 2021 Not a problem getting to cruise alt. However it has become a problem when to descend. I use a approach plate to determine approx 10 miles from the airport. Is there an easier way? Link to comment Share on other sites More sharing options...
JSkorna Posted August 8, 2021 Share Posted August 8, 2021 Your altitude divided by 3 usually tells you when to descend, http://www.air-source.us/images/sigs/000219_195_jimskorna.png Link to comment Share on other sites More sharing options...
plainsman Posted August 8, 2021 Share Posted August 8, 2021 A good flight plan program should give you that point based on your aircraft. I7-9700K, RTX-2070, Asus Strix Z-390-H MB, 32gb G Skill 3000 CL15, Corsair Obsidian 750D case, WD Black 1tb M.2, Crucial CT500MX SSD, Seasonic Prime 750W Titanium PSU Link to comment Share on other sites More sharing options...
Aptosflier Posted August 9, 2021 Share Posted August 9, 2021 I just wing it. ;-) Sent from my iPhone using Tapatalk HP Omen 25L Desktop, Intel i7-1070 CPU, 32 GB DDR RAM, Nvidia 3070 GPU, 1 TB SSD, Logitech flight yoke, throttle quadrant, rudder pedals, multi-panel, radio panel, TrackIR 5 Link to comment Share on other sites More sharing options...
av8tor98 Posted August 9, 2021 Share Posted August 9, 2021 Top of descent: Desired altitude to attain on descent, Ex: If at FL300 and descending to 10,000: 30,000-10,000 = 20,000. 20 x 3 = 60NM. Then you figure the rate of descent to achieve the desired altitude within 60NM. Multiply your ground speed by 6 to get that answer JOE- Asus P8Z68- V Pro; CPU: Intel i7-2600K 3.4ghz OC'd 4.6Ghz, 8G Corsair Dominator Platinum DDR3-1600, EVGA 1080Ti 11G ACX Cooler Samsung 500G OS drive, 3 WD 1T Raptor HDD Link to comment Share on other sites More sharing options...
dashort3 Posted August 9, 2021 Share Posted August 9, 2021 No easy way unless, as stated, you wing it. It's complicated if fact: Current Flight Level - Target Flight Level = difference difference / Decent Rate = Time needed for decent in minutes Time (/60)in tenths of an hour * IAS = NM needed for Decent NM for Decent + NM Target from end of RWY = Required Distance for Decent Example with rough rounding: 21000 FL - 2000 = 19000 19000 - 1200 = 15.833 15.8/60 = 0.264 220 IAS / 0.264 = 58.06 NM 58.06 + 10.1 NM from RWY (last waypt) = 68.16 NM I only use it for the higher altitudes to give me a chance at getting to the runway without a nose dive. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now