Wasn't 500 tons the Aircraft Gross Weight ??? (1 million pounds)
Yes it was GTW.
Certified GTW will be: 975,000 lbs. We engineers know we cannot trust all airlines. There are airlines that if there is a bare spot in the Aisle, they will let another passenger, goat or whatever on board. So, engineers kept throwing more plates into the cargo hold while chanting, "she can do it"
I would have only been worried if we had an aborted takeoff. Brakes so hot you could have all the Orville Redenbacher popcorn you want.
Title: Re: taking off with one million pounds!
Post by: Mike on September 10, 2010, 08:04:24 PM
where you actually right there during all these test, Ragwing ? ? ?
that's awesome!
Title: Re: taking off with one million pounds!
Post by: Frank N. O. on September 11, 2010, 04:53:07 PM
Wow, that's fantastic :o One question: What is Orville Redenbacher popcorn?
Frank
Title: Re: taking off with one million pounds!
Post by: Ragwing on September 12, 2010, 04:14:44 AM
Orville Redenbacher is a brand name popcorn that lists itself as gourmet.
Popcorn or popping corn is a type of corn which explodes from the kernel and puffs up when heated.
Corn popping was originally discovered by Native Americans, but became popular as a snack food during the United States Great Depression. When Americans go to movie theaters, it is one of the most purchased items.
Many enjoy purchasing popcorn with melted butter drizzled over it. (http://nutrihealth.in/wp-content/uploads/2010/04/popcorn.jpg)
I grew up with a large skillet and a high top lid. We would pop large bags of popcorn and sit in front of our black and white television and enjoy the popcorn.
Each kernel of popcorn contains a certain amount of moisture and oil. Unlike most other grains, the outer hull of the popcorn kernel is both strong and impervious to moisture and the starch inside consists almost entirely of a hard, dense type.
As the oil and the water are heated past the boiling point, they turn the moisture in the kernel into a superheated pressurized steam, contained within the moisture-proof hull. Under these conditions, the starch inside the kernel gelatinizes, softening and becoming pliable. The pressure continues to increase until the breaking point of the hull is reached: The hull ruptures rapidly, causing a sudden drop in pressure inside the kernel and a corresponding rapid expansion of the steam, which expands the starch and proteins of the into airy foam. As the foam rapidly cools, the starch and protein polymers set into the familiar crispy puff. (http://upload.wikimedia.org/wikipedia/commons/thumb/b/b4/Pochoclo1.jpg/220px-Pochoclo1.jpg)
Title: Re: taking off with one million pounds!
Post by: Mike on September 12, 2010, 04:41:32 AM
::thinking:: can't help but notice somebody is trying to avoid MY question . . . ::thinking:: ::sulk::
Title: Re: taking off with one million pounds!
Post by: Ragwing on September 12, 2010, 01:24:45 PM
::thinking:: can't help but notice somebody is trying to avoid MY question . . .
Answering questions on pop-corn was more fun.
I was not at the 747-8 maximum gross takeoff weight test. Every calculation was done beforehand. Rejected takeoff points were determined. The pilots flew the mission in the simulator numerous times. Everything from engine failures to flight control failures were tested. Earlier tests were reviewed to check acceleration of actual vs theoretical.
Down the hall, we have a conference room that is designed to display live data throughout the test flight. On one floor, we have simulators displaying everything the pilots have so that at any point in the test flight, we can game solutions to problems.
This is a different world than when we use to wait for computer tapes to be rushed over after the flight.
I am typically deployed after there is a problem. Not before.
Title: Re: taking off with one million pounds!
Post by: Frank N. O. on September 13, 2010, 11:49:45 AM
Wow, that's definately one way to make plain popcorn sound fantastic! I had actually thought the name was a nick-name for shrapnel or something from the brakes from an emergency-stop. Quite an explanation though |:)\ I only tried popcorn for the first time earlier this year, not bad actually, and that was cheap supermarket stuff too.
I would've personally loved to have been able to see that jumbo take off in person.
Frank
Title: Re: taking off with one million pounds!
Post by: Ragwing on September 14, 2010, 11:27:18 AM
Rejected takeoff tests:
At maximum gross takeoff weight, you have a whole lot of energy to dissipate. The only way it can go is via physics...... HEAT
Fire crews are on standby Brakes become cherry red to hotter. Some tires may burst into flame Brake fluid may catch fire
Title: Re: taking off with one million pounds!
Post by: Rooster Cruiser on September 14, 2010, 02:36:23 PM
Title: Re: taking off with one million pounds!
Post by: Frank N. O. on September 30, 2010, 11:40:04 PM
Dude! ::unbelieveable:: ::unbelieveable:: ::eek:: ::eek:: Why the heck were they so slow to get the pilots out of the plane? I would've seriously thought about just releasing the emergency slide if I'd seen those flames on the monitor.
Frank
Title: Re: taking off with one million pounds!
Post by: Ragwing on October 01, 2010, 03:01:09 AM
Dude! ::unbelieveable:: ::unbelieveable:: ::eek:: ::eek:: Why the heck were they so slow to get the pilots out of the plane?
It sure did not make sense to me either.
Forget the slide, I would have simply exited the door, window or anywhere else I could squeeze out of. No way would I stick around to become French Fries........
Title: Re: taking off with one million pounds!
Post by: Oddball on October 01, 2010, 11:05:11 AM
in one way maybe it would of been a bit safer staying put, dont fancy being shredded by exploding tyres, seen a photo of a Mech inflating a HGV tyre outside of the inflating cage when it popped blowing him through the roof of the garage.
Title: Re: taking off with one million pounds!
Post by: Mike on October 10, 2010, 09:16:43 PM
Now they are at the "dragging the tail across the runway" phase!
Title: Re: taking off with one million pounds!
Post by: Baradium on October 27, 2010, 09:33:02 PM
10 miles wake turbulence seperation? That's going to mess everything up haha, it's 5 miles behind a 747...
Title: Re: taking off with one million pounds!
Post by: undatc on November 04, 2010, 05:16:59 AM
Very cool Rag that you're helping design the new jumbo!
I gotta say I've really enjoyed working the planes in their testing. Between the 787's and the 748's cruising around my airspace on a daily basis, I think we at ZSE are kinda a proud silent papa mentality that we've 'helped' you guys get the job done. |:)\
Of note, the pics of ZA001 over the Oregon coast (and the subsequent commercial that has footage of it flying), were just over North Bend, OR ( OTH ) and I was actually working that aircraft during the pictures. I remember calling the brand new tower that was just built and told them to look out over the water to catch a glimpse of her as the passed by.
Title: Re: taking off with one million pounds!
Post by: Ragwing on November 04, 2010, 11:26:16 AM
we at ZSE are kinda a proud silent papa mentality that we've 'helped' you guys get the job done. |:)\
undatc, From the ATC's who route the test aircraft and stay on their toes to the mechanics who fix the kicksheets. The 787 will have a higher cabin air pressure and more moisture than everybody is use to.
There are a lot of unsung hero's as everybody works to bring these babies to life. Thanks for keeping them safe.
Title: Re: taking off with one million pounds!
Post by: undatc on November 11, 2010, 06:14:13 AM
BOE503 (aka one the the new H/B748 was down in my airspace yesterday. Got down to about OTH and turned around and went back North, only got to talk to him for about 5 min.
On the other hand ZA002 (aka dreamliner #2) was cruising around my area two days ago looking for TB. Gave him a block 100B320 for awhile (you have no idea how much of a coordination nightmare it is to give away that much altitude, at one point in time it involved the coordination of 7 different atc sectors) but couldnt find anything. The next days rides were crap and we even had some severe TB at FL380. Oh well. As ZA002 turned around and headed North along V27, a amflight PA31 was south bound and they passed opposite direction at minimum separation, hope that Navajo pilot had a camera, woulda been a helluva shot.
Title: Re: taking off with one million pounds!
Post by: Baradium on November 15, 2010, 06:39:30 PM
Last Saturday we were flying and our controller asked an aircraft (by N number) what their indicated was. After a response of .90 mach he asked if they'd always be going that fast and he replied "normal cruise will be around .86 or .88 mach, but it can go up to .92" (honestly it might have been .94 mach, it was a long day). We were talking about what kind of aircraft it could be when someone else finally asked and it was a 747-8.... I never thought that big bird would be cruising so fast.
Title: Re: taking off with one million pounds!
Post by: Ragwing on November 16, 2010, 05:35:46 AM
I never thought that big bird would be cruising so fast.
The Boeing 747 cruises at around 0.85 Mach. the Vmo/Mmo (maximum operating speed/mach) for the -200 is 0.89 Mach. The 747-400 it's 0.92 Mach.
The specs for the 747-8 are Vmo at 35,000 ft - Mach 0.92
Also, note, it is listed as the Vmo...... I have yet to see an aircraft that cannot do better than that.
Title: Re: taking off with one million pounds!
Post by: undatc on November 16, 2010, 06:21:24 AM
Very slick both the 748 and the 787 are crazy fast (though the 787 not so much right now), of note; Gulfstream just set a new record for the worlds fastest civilian jet in the G650, mach .995 :o
Title: Re: taking off with one million pounds!
Post by: Mike on November 17, 2010, 03:26:25 AM
Very slick both the 748 and the 787 are crazy fast (though the 787 not so much right now), of note; Gulfstream just set a new record for the worlds fastest civilian jet in the G650, mach .995 :o
doesn't the "Citation X" go just as fast?
(rumor has it they even went over the magical number "1" but aerodynamically I don't think it works that way....)
Title: Re: taking off with one million pounds!
Post by: undatc on November 17, 2010, 04:50:21 AM
The C750 tops out at .92 per wikipedia, and the high speed cruise of the G650 is .925 so it wins, barely lol.
But during flutter testing with a 16-18 nose down attitude, the G650 hit .995.
