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Main Forums => The Roundtable => Topic started by: just Warren on July 07, 2018, 11:20:45 AM

Title: Hey pilots, check this GIF out....
Post by: just Warren on July 07, 2018, 11:20:45 AM
...and tell us just what needs to happen in terms of training and equipment for this to happen.

Because, holy moly does this look dangerous.

https://9gag.com/gag/anMWq75
Title: Re: Hey pilots, check this GIF out....
Post by: Hawkmoon on July 07, 2018, 11:33:21 AM
The water, she's a need to be berry, berry smooooooth.

And the pilotas need to have berry, berry large cajones.
Title: Re: Hey pilots, check this GIF out....
Post by: 230RN on July 07, 2018, 11:44:43 AM
I've seen a couple of bush pilot videos where they do this for landing (or watering?), and then just roll onto the shore.  I love watching bush pilot videos.

Oh, if I were only 20, single, wealthy, and ballsey, I'd be up in Alaska bush piloting.

https://youtu.be/TuymNRGAw-k

Just like water skiing.
Title: Re: Hey pilots, check this GIF out....
Post by: just Warren on July 07, 2018, 11:58:57 AM
Quote
Alaska bush piloting.

You kids and your euphemisms.
Title: Re: Hey pilots, check this GIF out....
Post by: Fly320s on July 07, 2018, 12:14:41 PM
...and tell us just what needs to happen in terms of training and equipment for this to happen.

Because, holy moly does this look dangerous.

https://9gag.com/gag/anMWq75

Training: very comfortable in the plane.
Equipment: nothing special, just go fast enough to hydroplane.
Title: Re: Hey pilots, check this GIF out....
Post by: cordex on July 07, 2018, 02:18:14 PM
Training: very comfortable in the plane.
Equipment: nothing special, just go fast enough to hydroplane.
You’re pretty comfortable in a 320, right?
Title: Re: Hey pilots, check this GIF out....
Post by: just Warren on July 07, 2018, 02:28:40 PM
I'm guessing a jet that close to the surface will suck a lot of water into its engines.

So there should definitely be chase planes filming the event in case the jet crashes and we lose the in-plane footage.
Title: Re: Hey pilots, check this GIF out....
Post by: KD5NRH on July 07, 2018, 05:59:17 PM
Training: very comfortable in the plane.

Pretty much what I was thinking; tail draggers are a different critter anyway, and I wouldn't think this would be all that much more challenging than the ones who do two-point landings and tail-up taxi on soft surface runways.  (Not that those are exactly a walk in the park even on asphalt, but it's not something I'd be surprised to find any experienced tail dragger pilot could figure out in a few tries.)
Title: Re: Hey pilots, check this GIF out....
Post by: RocketMan on July 07, 2018, 06:00:40 PM
Looks like a fatal nose-over crash waiting to happen if the pilot drops too low and punches through the hydroplaning effect.
Absolutely still water and air required.  Wearing of life vests and four-point harnesses required.  Signed waivers mandatory.  Insurance coverage null and void while these maneuvers are underway.
Title: Re: Hey pilots, check this GIF out....
Post by: p12 on July 08, 2018, 12:02:28 AM
I never even thought about trying water skiing with a plane. My dad told me that if done on smooth water with a tail dragger once the hydroplane effect is started you can’t force the plane into the water. You have to decelerate enough to loose the upforce on the gear or hit a wave.

Tricycle geared plane is another story.


Sent from my iPhone using Tapatalk
Title: Re: Hey pilots, check this GIF out....
Post by: 230RN on July 08, 2018, 08:25:58 PM
I never even thought about trying water skiing with a plane. My dad told me that if done on smooth water with a tail dragger once the hydroplane effect is started you can’t force the plane into the water. You have to decelerate enough to loose the upforce on the gear or hit a wave.

Tricycle geared plane is another story.


Sent from my iPhone using Tapatalk

Don't forget you've also got the aerodynamic wing-lift going for you.  It's not like you're relying on the hydroplaning effect to hold up the whole weight of the plane.

<sigh>"Oh, if I were only 20, single, wealthy, and ballsey, I'd be up in Alaska bush piloting."</sigh>

https://youtu.be/Bo7-BuNiP6Y ((0:36)

"Mine's shorter than yours !  Nyah-nyah !"

Terry, 230RN
Title: Re: Hey pilots, check this GIF out....
Post by: MillCreek on July 08, 2018, 09:02:01 PM
I also have to think that in this video, there was a spotter in another plane that talked the pilot down to the water surface: 2 feet, 1 foot, six inches, etc.
Title: Re: Hey pilots, check this GIF out....
Post by: Hawkmoon on July 08, 2018, 09:46:44 PM
I also have to think that in this video, there was a spotter in another plane that talked the pilot down to the water surface: 2 feet, 1 foot, six inches, etc.

There were at least four planes, all doing it at the same time. Possibly pairs, spotting for each other?
Title: Re: Hey pilots, check this GIF out....
Post by: Fly320s on July 09, 2018, 07:54:59 AM
I also have to think that in this video, there was a spotter in another plane that talked the pilot down to the water surface: 2 feet, 1 foot, six inches, etc.

Not necessary.  A good pilot can tell how close to the water the wheels are in much the same way you can tell how close your car bumper is to the car in front of you.  It is just experience in the vehicle.  I don't use a spotter when I'm landing the A320; I know how close my wheels are to the runway.
Title: Re: Hey pilots, check this GIF out....
Post by: 230RN on July 09, 2018, 08:17:12 AM
^ "A good pilot can tell how close to the water the wheels are in much the same way you can tell how close your car bumper is to the car in front of you."

Good analogy.
Title: Re: Hey pilots, check this GIF out....
Post by: Scout26 on July 09, 2018, 11:37:49 AM
I don't use a spotter when I'm landing the A320; I know how close my wheels are to the runway.

Keep descending until you feel a thump ?

The only way my ex- knew how close she was to car in front of her was when she hit their bumper....
Title: Re: Hey pilots, check this GIF out....
Post by: Fly320s on July 09, 2018, 12:05:48 PM
Keep descending until you feel a thump ?

Only if I remembered to put the gear down.
Title: Re: Hey pilots, check this GIF out....
Post by: Scout26 on July 09, 2018, 12:09:22 PM
Only if I remembered to put the gear down.

It's just a louder thump if you don't.   
Title: Re: Hey pilots, check this GIF out....
Post by: just Warren on July 09, 2018, 12:12:01 PM
Only if I remembered to put the gear down.

I nearly choked on my food there.
Title: Re: Hey pilots, check this GIF out....
Post by: Fly320s on July 09, 2018, 01:51:55 PM
It's just a louder thump if you don't.   

Followed be a long scraping sound.
Title: Re: Hey pilots, check this GIF out....
Post by: BobR on July 09, 2018, 02:59:30 PM
  I don't use a spotter when I'm landing the A320; I know how close my wheels are to the runway.

I thought you guys had that new fangled auto land. Just sit back and make sure it stays kind of on centerline during rollout.  ;)

bob
Title: Re: Hey pilots, check this GIF out....
Post by: HeroHog on July 09, 2018, 03:07:13 PM
"This feels low. Does this feel low to you Bob?" (THUMP!) (SKREEEEEEEEEEEEEEEEEEEE!!!)
Title: Re: Hey pilots, check this GIF out....
Post by: just Warren on July 09, 2018, 03:18:33 PM
Looks like I picked the wrong week to stop sniffing glue!
Title: Re: Hey pilots, check this GIF out....
Post by: 230RN on July 10, 2018, 06:55:23 AM
Sum Ting Wong.  Famous Pilot.

Wi Tu Lo.  Famous copilot.

Title: Re: Hey pilots, check this GIF out....
Post by: Hawkmoon on July 10, 2018, 12:01:08 PM
Not necessary.  A good pilot can tell how close to the water the wheels are in much the same way you can tell how close your car bumper is to the car in front of you.  It is just experience in the vehicle.  I don't use a spotter when I'm landing the A320; I know how close my wheels are to the runway.

Don't you have an electronic spotter announcing your height above ground, starting at something like 1,000 feet or 500 feet?
Title: Re: Hey pilots, check this GIF out....
Post by: Fly320s on July 10, 2018, 12:14:26 PM
Radar altimeter starts calling out at 50 feet and lower, but I don’t pay attention to it.  I use my Mk1 Eyeballs to judge the height.
Title: Re: Hey pilots, check this GIF out....
Post by: Hawkmoon on July 10, 2018, 01:34:18 PM
Radar altimeter starts calling out at 50 feet and lower, but I don’t pay attention to it.  I use my Mk1 Eyeballs to judge the height.

So the radar altimeter is just there for when both pilots have the fish for dinner and one of us passenger types has to land the plane?
Title: Re: Hey pilots, check this GIF out....
Post by: just Warren on July 10, 2018, 01:39:35 PM
So the radar altimeter is just there for when both pilots have the fish for dinner

Quote
'S'mofo butter layin' me to da' BONE! Jackin' me up... tight me!
Title: Re: Hey pilots, check this GIF out....
Post by: Fly320s on July 10, 2018, 04:34:05 PM


I speak jive.
Title: Re: Hey pilots, check this GIF out....
Post by: Fly320s on July 10, 2018, 04:35:19 PM
So the radar altimeter is just there for when both pilots have the fish for dinner and one of us passenger types has to land the plane?

That won't help you.  The RA does give us height information that we use during certain approaches, but for normal landings, I just use the seat of my pants.
Title: Re: Hey pilots, check this GIF out....
Post by: just Warren on July 10, 2018, 04:43:02 PM
I speak jive.

Did you know this?

Muggles
    1930s and '40s slang for marijuana.

Mugglin'
    I's a-muggin', you's a-muggin', meaning getting high on reefer.
Title: Re: Hey pilots, check this GIF out....
Post by: 230RN on July 10, 2018, 05:18:49 PM
That won't help you.  The RA does give us height information that we use during certain approaches, but for normal landings, I just use the seat of my calibrated pants.

Fixed.

"I speak jive, stewardess."

(Barbara Billingsley, mother of the Beaver, in just about her last role.)

https://youtu.be/g0j2dVuhr6s?t=57

Terry

REF:
https://en.wikipedia.org/wiki/Leave_It_to_Beaver
Title: Re: Hey pilots, check this GIF out....
Post by: Hawkmoon on July 10, 2018, 11:01:22 PM
That won't help you.  The RA does give us height information that we use during certain approaches, but for normal landings, I just use the seat of my pants.

So if I'm on your aircraft when you have the fish for dinner, I can't land the plane unless I can fit into your pants? Or is a passenger landing the aircraft not considered a "normal" landing?
Title: Re: Hey pilots, check this GIF out....
Post by: just Warren on July 10, 2018, 11:03:39 PM
So if I'm on your aircraft when you have the fish for dinner, I can't land the plane unless I can fit into your pants?

This truly is the best timeline.
Title: Re: Hey pilots, check this GIF out....
Post by: 230RN on July 11, 2018, 12:48:42 AM
You must be One with the aircraft, Grasshopper.  Calibrated pants or no pants at all.


                 (https://akm-img-a-in.tosshub.com/indiatoday/images/story/201711/gurustory_647_111116063921_110417104348.jpg)
Title: Re: Hey pilots, check this GIF out....
Post by: MillCreek on July 11, 2018, 10:21:58 AM
Fly320 is just hoping that someone will inflate him, as per the original movie:

https://www.youtube.com/watch?v=_WQfZYacEAw
Title: Re: Hey pilots, check this GIF out....
Post by: Fly320s on July 11, 2018, 12:11:00 PM
You must be One with the aircraft, Puddlejumper.  Calibrated pants or no pants at all.

Fixed.


Quote
Fly320 is just hoping that someone will inflate him, as per the original movie:

Inflate/felate.  All is good.
Title: Re: Hey pilots, check this GIF out....
Post by: HeroHog on July 11, 2018, 03:17:57 PM
Sacred movie for me. I met my wife of 38 years on a blind double date to see Airplane! when it first came out. Married her exactly a year to the minute that date started.
Title: Re: Hey pilots, check this GIF out....
Post by: 230RN on July 11, 2018, 07:52:03 PM
Neat story, HeroHog.

I remember the first time I saw it I would laugh so hard at one joke, I'd miss the next one.  Had to see it several times to get it all.  I remember I was shocked at the inflation scene.  Nowadays, meh, funny, but not so prurient any more.

Title: Re: Hey pilots, check this GIF out....
Post by: 230RN on July 12, 2018, 12:51:01 AM
Forty-six mile water skiing by aircraft:

https://youtu.be/6OAEGPVcvhU (2:36)

Hmmmm, 46 miles in 2 minutes 36 seconds.  What's that work out to in miles per hour? :D
Title: Re: Hey pilots, check this GIF out....
Post by: Fly320s on July 12, 2018, 06:46:00 AM
Hmmmm, 46 miles in 2 minutes 36 seconds.  What's that work out to in miles per hour? :D

1,061 mph!!  That plane was flying!



Or, if we account for the Youtube editing, 52 mph average.
Title: Re: Hey pilots, check this GIF out....
Post by: 230RN on July 12, 2018, 08:34:54 AM
:D That's what I got, too :D

Interesting to watch the wheels bouncing over the ripples.

Say, did I notice the winglets are tipped downward at 0:21 and possibly other spots?  I asked about the efficacy of down-tipped versus up-tipped winglets in crosswind landings a couple of months ago, but sort of got poo-pooed on that one.

I figured down-tipped winglets would help hold the wing level in crosswind landings.  (As well as reducing the vortex effect.)

Hard to tell, they're black against a dark background.

Terry, 230RN
Title: Re: Hey pilots, check this GIF out....
Post by: Fly320s on July 12, 2018, 09:15:01 AM
Droop tips improve low-speed flight and handling.  They actually decrease the stall speed by a knot or three.

Upswept wing tips decrease drag in high-speed flight.

Neither type affects crosswind landing because the empennage (fancy French word for tail) has a longer arm from the CG and therefore has a greater moment to steer the nose in crosswind landings/takeoffs.  The winglets may contribute slightly to drift just because they will catch the wind more than a flat wingtip will, but compare to the size and shape of the fuselage, the effect is minimal.  So, allowing a slight amount of crosswind-induced drift because of the winglets doesn't cancel out the greater effects of high-speed drag reduction or low-speed stability.
Title: Re: Hey pilots, check this GIF out....
Post by: 230RN on July 12, 2018, 12:03:04 PM
I'm not talking about yaw, I'm talking about roll in a crosswind, where the upwind wing tends to get picked up and sometimes the downwind wing touches the ground.  The winglets have a large moment arm on which to counteract the roll (negative* feedback) if they're tipped down, and emphasize the roll (positive* feedback) if they're tipped up.

Just seems that way to me.

                                    /
___________________/   <--------------- crosswind
            WING
Wind from the right tends to tip the wing up, a positive feedback situation

___________________
             WING             \   <-------------  crosswind
                                    \

Wind from the right tends to tip the wing down, a negative feedback situation.

All depending on angles and airfoil and so forth, but it looks like the down-tipped winglet (giving negative feedback) would be inherently desirable.

But they don't do it that way, so this must be wrong.

Terry, 230RN

* "Negative" and "positive" are in the mathematical sense, not the emotional sense.
Title: Re: Hey pilots, check this GIF out....
Post by: Fly320s on July 12, 2018, 01:11:34 PM
I understand now. 

The winglets are so small, and the plane is so heavy, that a crosswind will not push on the winglet and roll the plane. 
Title: Re: Hey pilots, check this GIF out....
Post by: freakazoid on July 12, 2018, 07:42:36 PM
Droop tips improve low-speed flight and handling.  They actually decrease the stall speed by a knot or three.

Upswept wing tips decrease drag in high-speed flight.

Why not do both?
Title: Re: Hey pilots, check this GIF out....
Post by: Hawkmoon on July 12, 2018, 08:04:57 PM
Why not do both?

Why not put 'em on hinges?
Title: Re: Hey pilots, check this GIF out....
Post by: Fly320s on July 12, 2018, 08:12:22 PM
.
Title: Re: Hey pilots, check this GIF out....
Post by: Fly320s on July 12, 2018, 08:18:51 PM
As you wish (https://www.google.com/search?rlz=1C1CHZL_enUS746US747&biw=1368&bih=819&tbm=isch&sa=1&ei=zu1HW9CyJey1ggeC0qfgDw&q=737+max+winglet&oq=737+max+w&gs_l=img.3.0.0l8.12893.14409.0.16497.2.2.0.0.0.0.82.150.2.2.0....0...1c.1.64.img..0.2.150...0i67k1.0.rMnHloCXW3I)
Title: Re: Hey pilots, check this GIF out....
Post by: BobR on July 12, 2018, 08:19:14 PM
Or maybe some here a few there. ;)

(https://armedpolitesociety.com/proxy.php?request=http%3A%2F%2Fimgproc.airliners.net%2Fphotos%2Fairliners%2F1%2F7%2F6%2F0079671.jpg%3Fv%3Dv40&hash=e24b3b72eb8977b6f3c054013cc4bb7851d05f70)

bob
Title: Re: Hey pilots, check this GIF out....
Post by: Fly320s on July 12, 2018, 08:20:04 PM
Yep.  Beech 1900D.  The more strakes the merrier.
Title: Re: Hey pilots, check this GIF out....
Post by: BobR on July 12, 2018, 08:21:45 PM
Or as the Chinese have figured out... variable winglets...sort of.

(https://i.stack.imgur.com/cAZtK.jpg)


bob
Title: Re: Hey pilots, check this GIF out....
Post by: Fly320s on July 12, 2018, 08:24:28 PM
Isn't that a Russian plane?  An2?

Modernized version: https://www.flightglobal.com/news/articles/modernised-an-2-demonstrator-completes-first-flight-413382/
Title: Re: Hey pilots, check this GIF out....
Post by: BobR on July 12, 2018, 08:28:37 PM
Isn't that a Russian plane?  An2?

Modernized version: https://www.flightglobal.com/news/articles/modernised-an-2-demonstrator-completes-first-flight-413382/

Chinese copy of AN2, Y5B.

http://an2flyers.org/chinese.html

bob
Title: Re: Hey pilots, check this GIF out....
Post by: 230RN on July 12, 2018, 11:11:20 PM
From Fly320s' link at

https://www.flightglobal.com/news/articles/modernised-an-2-demonstrator-completes-first-flight-413382/

Quote
"That design change* improves the speed of the An-2 by 50%," Sukhoi says in the press release. The testing also shows the minimum flying speed of the aircraft is “close to zero”.

Damned plane is its own parachute. :rofl:

Terry

 *  I think the "design change" refers to the new engine and prop, not the additional struts.  It is not clear from the structure of these passages what they mean.  But even the original AN-2 has sprung slats of some kind on the wings which reduce the stall speed to zero.  Maybe they mean they only just discovered that particular feature of the AN-2.
Quote
The An-2 has no stall speed, a fact which is quoted [stated] in the operating handbook. A note from the pilot's handbook reads: "If the engine quits in instrument conditions or at night, the pilot should pull the control column full aft and keep the wings level. The leading-edge slats will snap out at about 64 km/h (40 mph) and when the airplane slows to a forward speed of about 40 km/h (25 mph), the airplane will sink at about a parachute descent rate until the aircraft hits the ground."[4]
https://en.wikipedia.org/wiki/Antonov_An-2
Title: Re: Hey pilots, check this GIF out....
Post by: Hawkmoon on July 13, 2018, 12:33:55 AM
Quote
The An-2 has no stall speed, a fact which is quoted [stated] in the operating handbook. A note from the pilot's handbook reads: "If the engine quits in instrument conditions or at night, the pilot should pull the control column full aft and keep the wings level. The leading-edge slats will snap out at about 64 km/h (40 mph) and when the airplane slows to a forward speed of about 40 km/h (25 mph), the airplane will sink at about a parachute descent rate until the aircraft hits the ground."[4]
https://en.wikipedia.org/wiki/Antonov_An-2

Now that's my kind of airplane!

https://www.youtube.com/watch?v=qTbm5ZzZQy8
Title: Re: Hey pilots, check this GIF out....
Post by: BobR on July 13, 2018, 01:28:38 PM
Now that's my kind of airplane!

https://www.youtube.com/watch?v=qTbm5ZzZQy8

Save up your pennies, it won't take that many surprisingly. There are quite a few of them out there for sale with prices all over the place. This one looks nice for the price.

http://www.planecheck.com/index.asp?ent=ap&man=Antonov&des=AN2&type=&grp=An-2&id=0

bob
Title: Re: Hey pilots, check this GIF out....
Post by: 230RN on July 14, 2018, 12:11:47 PM
But wheяe do you get paяts nowadays?
Title: Re: Hey pilots, check this GIF out....
Post by: Fly320s on July 14, 2018, 04:09:15 PM
But wheяe do you get paяts nowadays?

Probably from a VW dealer.
Title: Re: Hey pilots, check this GIF out....
Post by: RocketMan on July 16, 2018, 02:39:28 PM
There is an old saying:  "There are old pilots, and there are bold pilots.  But there are no old, bold pilots."  I would amend that to read, "There are very damn few old, bold pilots."  We have to account for the Chuck Yeagers, Bob Hoovers, and Scott Crossfields of the pilot world.
Title: Re: Hey pilots, check this GIF out....
Post by: 230RN on July 17, 2018, 08:06:44 AM
In general, I hate all-encompassing aphorisms like that.  It's like the BS "There are only two kinds of pilots --those who have made a wheels-up landing, and those who will."

Catchy when you say it fast, dumb when you think about it.

(Reminds me of hyperlefties, come to think of it.)

(Yeah, had to stick a politics thingie in there.  Sorry.)

Terry