247 pts ยท August 19, 2012
which would generate a cushion for the portion of the main rotor that's over the ground (aft), but not forward, causing a net pitch.
He was flying above the ridge beforehand, so wind would be some kind of shear. More likely is that he entered ground effect VERY QUICKLY 1/2
Coanda + Magnus effects, to be pendantic. Coanda explains curl, entrainment, and some lift, but the *spinning* of the tape adds more lift.
It's not! The golden outside is a cheese frico. Source: I've had a couple of their burritos.
Los Angeles & Northern Orange County
Low Key is so good! Foil is hiding the best part though: CHEDDAR CHEESE CRUST
LA. They're a pop-up that rotates locations fri-sun each week, currently in Mar Vista IIRC
Over at the galleria? My wife is coaching my answers now lmao
Ventura and Sepulveda, specifically. In-laws live nearby so I'm very familiar with the intersection.
Always Upvote Waterburger
The fact is, teetering rotors are not designed for <=0G maneuvers and depend on positive axial force to stay stable.
I almost understand what you're trying to convey, but body to rotor position is controllable, but has a lag due to the rotor not being rigid
206 is a teetering rotor and not a good comparison. A rigid rotor would be the BK117, and a flexbeam/semi-rigid would be Bell 407 or 429.
So the blades have a flexible yoke, it is there another mechanism? Stiffer blades = faster controls but also higher vibration!
53K MR blades only went into production a few years ago IIRC, but yeah the K has been a 5ever project (I worked at SIK too, 2008/2009)
Am a Rotorcraft Engineer, this post is awesome, AMA
Saw it at the Alliance airshow out in Fort Worth, Can confirm.
The nose-high attitude is akin to a flare, which bleeds off NR by design. The fact that the TR changes RPM at the start is a dead giveaway.
Which leads to my conclusion that the pilot burnt a lot of power and bled off NR during the stop, and then couldn't maintain hover.
3: Hover power required is significantly higher than cruise, and coming to a halt like that requires a lot of power
2: The 412 had forward speed before falling. VRS happens in axial flight, and there was not amole time for the vortex ring to form
1: there is no reasonable way you can determine blade pitch from that image.
It's a 412 because the tail rotor only has 2 blades and not 4, and an EPI because of the shape of the vertical stabilizer (Standard on EPI)
Not VRS, sorry. Poor Power management when pulling into HOGE.
This. VRS happens in a moderate rate of descent (Vclimb/Vinflow ~= -1). The 412EPI (ask me how I know) had essentially flared and then fell.
Remove lid and bake for 10-15 min, until desired color on outside. Done!
preheat oven+dutch oven to 475F. place dough in dutch oven and cook with lid on for 15min at 475, and then an additional 10 at 450F.
Rest for bulk rise for 1 hr. Turn out and divide into two loaves. Shape, rest for 10min, shape again, and then let proof in fridge for 24hrs
Similar to no-knead bread, do 4 stretch-and-fold's and let rest. repeat 4x (16 folds total), each session being 30min apart
Let the dough sit for 30min-1hr, then add 1TBSP salt dissolved in 50g water. fold into dough and rest for 30min.
which would generate a cushion for the portion of the main rotor that's over the ground (aft), but not forward, causing a net pitch.
He was flying above the ridge beforehand, so wind would be some kind of shear. More likely is that he entered ground effect VERY QUICKLY 1/2
Coanda + Magnus effects, to be pendantic. Coanda explains curl, entrainment, and some lift, but the *spinning* of the tape adds more lift.
It's not! The golden outside is a cheese frico. Source: I've had a couple of their burritos.
Los Angeles & Northern Orange County
Low Key is so good! Foil is hiding the best part though: CHEDDAR CHEESE CRUST
LA. They're a pop-up that rotates locations fri-sun each week, currently in Mar Vista IIRC
Over at the galleria? My wife is coaching my answers now lmao
Ventura and Sepulveda, specifically. In-laws live nearby so I'm very familiar with the intersection.
Always Upvote Waterburger
The fact is, teetering rotors are not designed for <=0G maneuvers and depend on positive axial force to stay stable.
I almost understand what you're trying to convey, but body to rotor position is controllable, but has a lag due to the rotor not being rigid
206 is a teetering rotor and not a good comparison. A rigid rotor would be the BK117, and a flexbeam/semi-rigid would be Bell 407 or 429.
So the blades have a flexible yoke, it is there another mechanism? Stiffer blades = faster controls but also higher vibration!
53K MR blades only went into production a few years ago IIRC, but yeah the K has been a 5ever project (I worked at SIK too, 2008/2009)
Am a Rotorcraft Engineer, this post is awesome, AMA
Saw it at the Alliance airshow out in Fort Worth, Can confirm.
The nose-high attitude is akin to a flare, which bleeds off NR by design. The fact that the TR changes RPM at the start is a dead giveaway.
Which leads to my conclusion that the pilot burnt a lot of power and bled off NR during the stop, and then couldn't maintain hover.
3: Hover power required is significantly higher than cruise, and coming to a halt like that requires a lot of power
2: The 412 had forward speed before falling. VRS happens in axial flight, and there was not amole time for the vortex ring to form
1: there is no reasonable way you can determine blade pitch from that image.
It's a 412 because the tail rotor only has 2 blades and not 4, and an EPI because of the shape of the vertical stabilizer (Standard on EPI)
Not VRS, sorry. Poor Power management when pulling into HOGE.
This. VRS happens in a moderate rate of descent (Vclimb/Vinflow ~= -1). The 412EPI (ask me how I know) had essentially flared and then fell.
Remove lid and bake for 10-15 min, until desired color on outside. Done!
preheat oven+dutch oven to 475F. place dough in dutch oven and cook with lid on for 15min at 475, and then an additional 10 at 450F.
Rest for bulk rise for 1 hr. Turn out and divide into two loaves. Shape, rest for 10min, shape again, and then let proof in fridge for 24hrs
Similar to no-knead bread, do 4 stretch-and-fold's and let rest. repeat 4x (16 folds total), each session being 30min apart
Let the dough sit for 30min-1hr, then add 1TBSP salt dissolved in 50g water. fold into dough and rest for 30min.