Aeronautical Insanity: switching to secondary tolerances

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Woolwich Bagnet: Apr 27, 2003

CommieGIR posted:

Spaceflight Update on NASA's Image:

They've been able to download diag info from the craft, batteries are fully charged and it appears to be functioning, granted through only the A side Bus, which was thought to be dead. Can't talk back to it yet, but its nice to see it come back to life.

https://www.nasa.gov/feature/goddard/2018/nasa-image-confirmed

JWST scares the crap out of me. The thing is so unbelievably complex at this point and it's going to be beyond servicing range. I did an internship at Goddard a couple of years ago and they were putting the mirrors on and in the viewing room for the clean room they have monitors that continually loop an animation of the unfolding and the number of steps is unreal.

I wish NASA's budget wasn't so small and volatile, it would have been a cool place to do a postdoc but civil service jobs afterwards are a pipe dream.

# ? Feb 14, 2018 00:52

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# ? May 24, 2024 23:54

evil_bunnY: Apr 2, 2003

Mokotow posted:

Pitot heating was on for last 15 departures, not this one.

It's a loving jet why would you ever turn it off

# ? Feb 14, 2018 00:54

mllaneza: Apr 28, 2007; Veteran, Bermuda Triangle Expeditionary Force, 1993-1952

Nebakenezzer posted:

I'm in the middle of reading Outlaws Inc. right now and the IL-76 is a good example of how a plane might have a good design and be well piloted, but still have a high crash ratio simply because of the vibrant second life they have flying around Africa/South America/the Middle East

Outlaws, Inc. is hell of a read. I recommend it to all aviation enthusiasts. It's chock full of crazy stories of shady flights around the world.

# ? Feb 14, 2018 01:20

Lightbulb Out: Apr 28, 2006; slack jawed yokel

quote:

Leaping elk crashes low-flying research helicopter in Utah
SALT LAKE CITY (AP) � An elk leaped into a research helicopter that was trying to capture it and brought down the helicopter in a collision that also killed the elk, authorities said Tuesday.

The elk jumped into the chopper�s tail rotor as the aircraft flew about 10 feet (3 meters) above ground in a mountainous part of eastern Utah, with its crew trying to drop a net on the elk, said Jared Rigby of the Wasatch County Sheriff�s Office.

The two people on board weren�t seriously hurt, but the elk died of its injuries Monday afternoon.

The state-contracted Texas-based crew was trying to capture and sedate the elk and give it a tracking collar to research its movements in the area about 90 miles (145 kilometers) east of Salt Lake City.

Helicopters are a frequently used and essential tool for monitoring remote wildlife in Utah, said Mark Hadley with the state Division of Wildlife Resources.

The tracking collars help wildlife officials monitor elk migration paths and survival rates. The state captures about 1,300 animals each winter, almost all using helicopters, and Tuesday�s downing of the helicopter was the first accident of its kind, he said.

The crew had launched a net it catch the animal, but when that didn�t immediately work the pilot started to slow down so someone could jump out and hobble the elk, Hadley said. As the helicopter slowed down, the elk collided with the rotor, Hadley said.

The helicopter was damaged on its tail rotor, right skid and underside, Rigsby said.

State officials will review the incident that appears to have been a fluke accident, Hadley said.

Environmental groups have protested the use of helicopters to monitor wildlife.

The group Wilderness Watch is objecting to a plan to study mountain goats using helicopters in a central-Utah wilderness area, calling the aircraft �unnecessary intrusion into some of our most treasured lands,� according to the Deseret News.

# ? Feb 14, 2018 02:15

priznat: Jul 7, 2009; Let's get drunk and kiss each other all night.

MD500 NOTAR supremacy

# ? Feb 14, 2018 02:26

Wingnut Ninja: Jan 11, 2003; Mostly Harmless

MikeCrotch posted:

I remember an episode of Air Crash Investigation where a plane crashed in (I think) the Caribbean because it was overloaded and the pilots turned off de-icing to conserve power. Wonder if anything like that could have happened here.

That's done for systems like engine or wing de-ice that use engine bleed air to melt ice, since tapping off some of the air reduces the engine's total thrust by a small amount. Pitot tubes are heated electrically so that shouldn't be an issue.

At least, that's how it normally works. I wouldn't put it past a Russian engineer to design some kind of crazy bleed air-powered pitot heat system. :shrug:

# ? Feb 14, 2018 02:34

BIG HEADLINE: Jun 13, 2006; "Stand back, Ottawan ruffian, or face my lumens!"

https://twitter.com/GenChuckYeager/status/963295504686727168

# ? Feb 14, 2018 02:43

Potato Salad: Oct 23, 2014; nobody cares

Minnesota Mixup posted:

JWST scares the crap out of me. The thing is so unbelievably complex at this point and it's going to be beyond servicing range. I did an internship at Goddard a couple of years ago and they were putting the mirrors on and in the viewing room for the clean room they have monitors that continually loop an animation of the unfolding and the number of steps is unreal.

I wish NASA's budget wasn't so small and volatile, it would have been a cool place to do a postdoc but civil service jobs afterwards are a pipe dream.

It's going to be absolutely nail-biting horrific to picture so much capabilitiy and treasure strapped to the top of a bomb like a hostage.

I'm trying to think of the last time we had, what, $8Bn on a single launch?

# ? Feb 14, 2018 03:01

PT6A: Jan 5, 2006; Public school teachers are callous dictators who won't lift a finger to stop children from peeing in my plane

Wingnut Ninja posted:

That's done for systems like engine or wing de-ice that use engine bleed air to melt ice, since tapping off some of the air reduces the engine's total thrust by a small amount. Pitot tubes are heated electrically so that shouldn't be an issue.

At least, that's how it normally works. I wouldn't put it past a Russian engineer to design some kind of crazy bleed air-powered pitot heat system.

To add to this: if pitot heat was off, it's because it got forgotten. Most pitot heat systems, at least all the ones I've dealt with, will have a maximum amount of time they can be run on the ground, since they can overheat without airflow around them, so you have to turn it on as part of the takeoff checklist.

# ? Feb 14, 2018 03:15

Hermsgerv�rden: Apr 23, 2004; Møøse Trainer

https://twitter.com/erikhaddad/status/963545023210909696

Um

# ? Feb 14, 2018 03:50

spookykid: Apr 28, 2006; I am an awkward fellow
after all

Hermsgerv�rden posted:

https://twitter.com/erikhaddad/status/963545023210909696

Um

# ? Feb 14, 2018 04:10

Plastic_Gargoyle: Aug 3, 2007

Lightbulb Out posted:

Elk beats helicopter

This guy just won the hangar stories game.

# ? Feb 14, 2018 04:44

Nostalgia4Infinity: Feb 27, 2007; 10,000 YEARS WASN'T ENOUGH LURKING

Hermsgerv�rden posted:

https://twitter.com/erikhaddad/status/963545023210909696

Um

Dannywilson posted:

# ? Feb 14, 2018 04:49

tactlessbastard: Feb 4, 2001; Godspeed, post; Fun Shoe

BIG HEADLINE posted:

https://twitter.com/GenChuckYeager/status/963295504686727168

You're right, General. If someone had bet me today you were still alive, I would have taken the odds.

# ? Feb 14, 2018 05:07

Godholio: Aug 28, 2002; Does a bear split in the woods near Zheleznogorsk?

Hermsgerv�rden posted:

https://twitter.com/erikhaddad/status/963545023210909696

Um

That's because it's not a problem. :downs:

# ? Feb 14, 2018 07:52

Humphreys: Jan 26, 2013; We conceived a way to use my mother as a porn mule

Dannywilson posted:

HAHA perfect!

For those not familiar with 'the front fell off' skit:

https://www.youtube.com/watch?v=3m5qxZm_JqM

# ? Feb 14, 2018 08:44

Potato Salad: Oct 23, 2014; nobody cares

Dannywilson posted:

# ? Feb 14, 2018 14:23

PhotoKirk: Jul 2, 2007; insert witty text here

Hermsgerv�rden posted:

https://twitter.com/erikhaddad/status/963545023210909696

Um

"THERE ISn't SOMETHING ON THE WING!"

# ? Feb 14, 2018 17:20

hobbesmaster: Jan 28, 2008

Godholio posted:

That's because it's not a problem.

Yeah it�s only a problem when the other engine goes out.

Then again it�s �engines turn or passengers swim�

# ? Feb 14, 2018 17:22

Cat Mattress: Jul 14, 2012; by Cyrano4747

In the "front fell off" series, there's also an Algerian B736 losing its right front wheel during takeoff.

# ? Feb 14, 2018 17:42

MikeCrotch: Nov 5, 2011; I AM UNJUSTIFIABLY PROUD OF MY SPAGHETTI BOLOGNESE RECIPE

YES, IT IS AN INCREDIBLY SIMPLE DISH

NO, IT IS NOT NORMAL TO USE A PEPPERAMI INSTEAD OF MINCED MEAT

YES, THERE IS TOO MUCH SALT IN MY RECIPE

NO, I WON'T STOP SHARING IT

more like BOLLOCKnese

Hermsgerv�rden posted:

https://twitter.com/erikhaddad/status/963545023210909696

Um

it'll buff out

# ? Feb 14, 2018 18:46

BIG HEADLINE: Jun 13, 2006; "Stand back, Ottawan ruffian, or face my lumens!"

On the bright side, a lucky An-124 crew gets a day or two's worth of vacation in Hawaii now!

# ? Feb 14, 2018 21:36

bull3964: Nov 18, 2000; DO YOU HEAR THAT? THAT'S THE SOUND OF ME PATTING MYSELF ON THE BACK.

Looks like it was a contained (not uncontained like the tweet says) engine failure and the shaking ripped the cover off. There's 1 1/2 blades missing from the fan.
https://twitter.com/Steady1970/status/963797840668524550?s=09

# ? Feb 14, 2018 22:50

Finger Prince: Jan 5, 2007

bull3964 posted:

Looks like it was a contained (not uncontained like the tweet says) engine failure and the shaking ripped the cover off. There's 1 1/2 blades missing from the fan.
https://twitter.com/Steady1970/status/963797840668524550?s=09

Not sure who that guy is chastising. United? The Media? Twitter? Himself?
Nose cowl missing so may not be a blade failure as the root cause. If the cowl blew from overpressure, it could have taken out the fan, and the fan cowls might have blown open from airflow after that point.

# ? Feb 14, 2018 23:21

CommieGIR: Aug 22, 2006; The blue glow is a feature, not a bug; Pillbug

Finger Prince posted:

Not sure who that guy is chastising. United? The Media? Twitter? Himself?
Nose cowl missing so may not be a blade failure as the root cause. If the cowl blew from overpressure, it could have taken out the fan, and the fan cowls might have blown open from airflow after that point.

He claims its an "Uncontained" failure, but that's not true. The turbine blades would have to eject THROUGH the turbine containment housing to be uncontained. Nobody said the broken blades didn't have to leave another way after the failure

# ? Feb 14, 2018 23:30

PT6A: Jan 5, 2006; Public school teachers are callous dictators who won't lift a finger to stop children from peeing in my plane

CommieGIR posted:

He claims its an "Uncontained" failure, but that's not true. The turbine blades would have to eject THROUGH the turbine containment housing to be uncontained. Nobody said the broken blades didn't have to leave another way after the failure

Blade-rich exhaust.

# ? Feb 14, 2018 23:39

um excuse me: Jan 1, 2016; by Fluffdaddy

I'll see this blade in a few days probably. This bird might chirp the real reason if I hear it.

# ? Feb 14, 2018 23:43

Finger Prince: Jan 5, 2007

PT6A posted:

Blade-rich exhaust.

Chunky bypass engine

# ? Feb 14, 2018 23:43

e.pilot: Nov 20, 2011; sometimes maybe good
sometimes maybe shit

PT6A posted:

Blade-rich exhaust.

CND: no exhaust found coming from engine

# ? Feb 15, 2018 02:57

Arishtat: Jan 2, 2011

I believe this qualifies for both Awesome AI poo poo and this thread, but the sexy Connie (?) cargo version won out so here you go:

Shamelessly stolen from Petrolicous� FB feed

# ? Feb 16, 2018 17:27

0toShifty: Aug 21, 2005; 0 to Stiffy?

I think that's a Bristol Britania

# ? Feb 16, 2018 17:46

StandardVC10: Feb 6, 2007; This avatar now 50% more dark mode compliant

0toShifty posted:

I think that's a Bristol Britania

Close. It's a Canadair CL-44, which was an enlarged Britannia with a hinged tail built in Canada.

# ? Feb 16, 2018 18:16

Potato Salad: Oct 23, 2014; nobody cares

Does someone have to hook up and test hydraulic lines after each cargo loading/unloading?

# ? Feb 16, 2018 18:33

MrYenko: Jun 18, 2012; #2 isn't ALWAYS bad...

StandardVC10 posted:

Close. It's a Canadair CL-44, which was an enlarged Britannia with a hinged tail built in Canada.

Is that the entire Lotus field parked next to it? I�m not up on my vintage race cars.

# ? Feb 16, 2018 18:49

joat mon: Oct 15, 2009; I am the master of my lamp;
I am the captain of my tub.

MrYenko posted:

Is that the entire Lotus field parked next to it? I�m not up on my vintage race cars.

Lotus, Brabham, Cooper, BRM, and Lola, I'd expect.

Potato Salad posted:

Does someone have to hook up and test hydraulic lines after each cargo loading/unloading?

The Britannia and CL-44 used mechanically actuated servo tabs for control. Wiki says 'push pads' made the connection at the joint.

# ? Feb 17, 2018 00:02

MrYenko: Jun 18, 2012; #2 isn't ALWAYS bad...

Potato Salad posted:

Does someone have to hook up and test hydraulic lines after each cargo loading/unloading?

I don�t know about the Britannia conversions, but the original Boeing 377/C-97-based Guppys required re-rigging of the tail each time the aircraft was split. It wasn�t a big deal for operators like NASA, who were/are moving things very occasionally (the NASA Super Guppy is coincidentally the last 377/B-29/C-97 descendent in regular operation,) but it was a huge issue for other operators, like Airbus, who were using them commercially. So they went and built the Beluga.

Which is the most apt name for that thing. It�s perfect.

# ? Feb 17, 2018 00:23

ehnus: Apr 16, 2003; Now you're thinking with portals!

StandardVC10 posted:

Close. It's a Canadair CL-44, which was an enlarged Britannia with a hinged tail built in Canada.

I'm guessing someone at Canadair got a good deal on a bunch of Britannias and some cutoff wheels with the CL-44 and Argus projects.

# ? Feb 17, 2018 06:29

CBJamo: Jul 15, 2012

MrYenko posted:

I don�t know about the Britannia conversions, but the original Boeing 377/C-97-based Guppys required re-rigging of the tail each time the aircraft was split. It wasn�t a big deal for operators like NASA, who were/are moving things very occasionally (the NASA Super Guppy is coincidentally the last 377/B-29/C-97 descendent in regular operation,) but it was a huge issue for other operators, like Airbus, who were using them commercially. So they went and built the Beluga.

Which is the most apt name for that thing. It�s perfect.

Any idea if the Dreamlifter has the same problem? I kinda doubt it, but my google fu is weak on this one.

# ? Feb 17, 2018 06:49

spookykid: Apr 28, 2006; I am an awkward fellow
after all

No, because they are all fly by wire, and all the appropriate bits are wired into that hinged section, and don't have to be touched unless they are replaced.

# ? Feb 17, 2018 07:28