F-35 losses only small amount of altitude in pedal turn

Discuss the F-35 Lightning II
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gta4

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Unread post11 Sep 2020, 15:06

Official F-35 demo maneuver description can be downloaded here:
viewtopic.php?f=22&t=57350

The F-35 loses only 1250-1500 feet in the 360 deg pedal turn. considering it "delivers a constant 28 deg/sec",
https://www.realcleardefense.com/articl ... 673-7.html F-35 only loses 100 feet/sec to maintain 28deg/sec. By contrast, 4th gen fighters lose hundreds of feet/sec to maintain 25 deg /sec. This could be verified with doghouse plots of F14/F16.

The F-35 carries huge amount of fuel when taking off at an airshow: full fuel for staged show, 14500+ lbs for high show and 12000+ lbs for low show.

The F-35 enters the min radius turn at about 380 knots and may still accelerate under 7.5G pull. Throttle needs regulate to maintain speed.
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mixelflick

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Unread post15 Sep 2020, 16:26

It's good to know it can do these things with max internal fuel (or damn close), but I wonder why they don't use less as I'd imagine it would present a better safety margin?

I don't mean fumes, just something that'll buy it more "umph" if the situation calls for it. I've seen some pretty close calls with the ground (coming out of a loop, for example) in other aircraft. Have to believe the amount of fuel they were carrying didn't at least play a part. Makes me wonder how much fuel that Flanker had when it tumbled into the crowd years back.

Terrible day for aviation..
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Conan

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Unread post16 Sep 2020, 00:08

mixelflick wrote:It's good to know it can do these things with max internal fuel (or damn close), but I wonder why they don't use less as I'd imagine it would present a better safety margin?

I don't mean fumes, just something that'll buy it more "umph" if the situation calls for it. I've seen some pretty close calls with the ground (coming out of a loop, for example) in other aircraft. Have to believe the amount of fuel they were carrying didn't at least play a part. Makes me wonder how much fuel that Flanker had when it tumbled into the crowd years back.

Terrible day for aviation..


Due to cooling requirements, perhaps?
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gta4

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Unread post16 Sep 2020, 01:44

mixelflick wrote:It's good to know it can do these things with max internal fuel (or damn close), but I wonder why they don't use less as I'd imagine it would present a better safety margin?

I don't mean fumes, just something that'll buy it more "umph" if the situation calls for it. I've seen some pretty close calls with the ground (coming out of a loop, for example) in other aircraft. Have to believe the amount of fuel they were carrying didn't at least play a part. Makes me wonder how much fuel that Flanker had when it tumbled into the crowd years back.

Terrible day for aviation..


Quote from the text:

Fuel load consideration includes divert requirements.

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