“ B-29 SUPERFORTRESS WEIGHT AND BALANCE ” WWII BOEING AIRCRAFT CREW TRAINING FILM XD73214
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- Опубліковано 10 лют 2024
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This WWII film produced for aircraft and ground crews by the Boeing Company looks at how to weigh a B-29 Superfortress and how to perform load weight, center of gravity and balance calculations. The first part of the film shows technicians using a weight kit and jacks to take different readings of the weight of a B-29 Bomber. This is followed by the weight officer taking the different readings and using them to calculate the weight and moments in order to compute the basic index, which is needed for determining the center of gravity of the aircraft. The film highlights best practices for this such as removing any items that should not be there, zeroing weighing equipment, and keeping your equipment clean.
0:06 two B-29s flying, 0:14 technicians working on a B-29, 0:23 a technician taking inventory in the cockpit, 1:03 technicians checking hydraulics, 1:25 technicians setting up and using a mobile weight kit to check the weight of a B-29, 2:14 technician working on the braking system of the front landing gear, 3:13 engineers moving jacks into place under the aircraft, 3:31 jack cells being connected to electric cables, 3:46 technician operating the weight kit by zeroing the equipment, 4:52 technician attaching jacks to aircraft with another technician inspecting the work, 6:00 technicians checking the weight kit, 6:11 technicians uncovering and looking at the graduated scale to level the aircraft, 6:53 technicians in position begin jacking the aircraft simultaneously, 8:00 technicians correcting the leveling of the aircraft after inspecting the plumb bob, 8:59 technician operating the weight kit to see the weight of the aircraft nose, left wing, and right wing, 10:02 weight officer recording the weights on the weighing form and calculating the final weight, 10:45 technicians operating the jacks to lower the aircraft, 11:10 technician operating the weight kit to see if there are any inaccuracies in the weight readings, 12:07 technician packing up the weight kit and cleaning and oiling the weight cells, 13:18 the weight officer using the weight sheet to calculate the moments for the aircraft to find its center of gravity, 16:34 weight officer calculating the basic index on the weight sheet, 17:49 flight engineer calculating how to load the aircraft’s oil, fuel, crew, and expendable items on a sheet using a compartment slide, 20:46 technical crew and flight crew preparing for the take-off of a B-29, 21:32 close up of the flight crew, 22:11 produced by the Boeing Aircraft Company
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Why can't I stop watching these old training videos?
In case you ever need to balance a bomber.
Why would you want to?
100+ man hours of basic maintenance for every hour of flight ! Factor in an engine change and that easily doubles. A huge team effort.
After removing the door plug bolts, the aircraft must be weighed again.
😂
Perhaps in 1945
Like Boeing 737 Max 9 lost door panels on flight...
By the time the paperwork is done, she's ready for the Korean War
The principals of military weight and balance are largely unchanged in 2024. You'll still see Chart A and Chart C to this day. The same basic principals for preparing and executing an airplane weighing, and the post weigh documentation, are the same.
Hatalmas munka lehetett a gépek karbantartása. Én csak tankot javitottam, el tudom képzelni, hogy minden rendszert ellenőrzése mennyi időbe telt. Motorokat, fegyvereket, müszereket, üzemanyag ellátó renszreket, rádiókat,stb. Köszi a feltöltést. Thanks.
what about civilian aircraft ?
@@ahsansariyadi29 Google "FAA Advisory Circular 120-27" and find & read revision F for the latest guidance on W&B for airlines. If you've ever been on a puddle jumper and the crew asks someone to move from one end of the airplane to another, you will know why. Or why you may have to step on a scale if you're taking a helicopter tour.
@@gaborgredely1848 A földi személyzet kétségtelenül nagyobb volt, mint a repülőszemélyzet. A hajózószemélyzet összesen tizenegy tagja. Cheers.
Weighing with the load cells in one of the few jobs I hated as a C-130 crew chief. When we got the roll on scales, life was good.
Is this done before every flight? How do airliners manage to keep to schedules?
@@danpatterson8009 An aircraft is weighed every time a major repair or overhaul is performed. On our C-130’s, they were overhauled every 5 years, so they were weighed than. However, if, for some reason (deployed, very hard broke and couldn’t fly for an extended period of time (months for corrosion repair)), than we’d have to do it at our base. After the weighing (which could take 2-3 days due to defiling and inventory), as anything is added or removed (cargo, passengers, seats, internal fuel tanks, anything that weighed 5 pounds or more) a weight and balance was done on paper (the form F the flight engineer was doing). In out world, the loadmaster performed the calculations, the aircraft commander reviewed it, signed it, and a copy stayed with the aircraft, a carbon copy went to operations (in case of an accident). Airlines are similar but the dispatch does the function of loadmaster. Now, for some aircraft (light weight) a 2.5 pound change required a recalculation.
I presume the procedure to do this is without pencils and paper these days.
That slide rule was an engineering marvel in it's own right!
@@dobiem1 Yes, our form F’s were paper, calculated using hand calculators. Today, the data is entered in a load plan and calculated. The aircraft’s flight management system is also used once the center of gravity and weights are figured to calculate take off speeds, trim tab settings, power required, runway length requirements, climb rates, altitude capabilities, fuel burn rate, all kinds of things.
Load cells built into the gear struts could give you the overall weight and CG, but you'd still have to tell the number box how much fuel is in each tank because that will change during the flight. Still can't figure how airlines do it unless they're satisfied with estimates.
I was an AGE mechanic in tge USAF which is all of the equipment used to maintain aircraft on the ground such as generators and hydraulic test stand and the jacks and stands. A lot of the jacks and stands which of course are just steel and simple hand pumped hydraulic rams go all the way back to the B-29. Not much has really changed although the jacks that a modern heavy aircraft needs are much bigger than these seen in the clip and that size jack is what a moder fighter needs.
I'd say that a well maintained jack that doesn't get damaged severely can probably last 30-40 years.
One note about max weight: The Wright engineers recommended that the max weight of a fully loaded B-29 be 120,000 pounds. They were overruled - the Army Air Forces set the limit at 140,000 pounds. source: Ian Toll's Twilight of the Gods, pg 348.
SEE my IRon pants coo\ment above, Lemay threw out the guners and ammo-to add napalm and fuel tanks.
Before every mission??
Wow. We still use the same type of aircraft jacks to this day
Was going to say the same thing.
Literally the jacks in the film are probably still being used. Surplus military jacks are valuable. Tronair makes most of the jacks today. Those jacks new would be well north of $10,000.
If the b29 must took a long time for maintenance
Awesome plane but she had alot of power problems
at least they had early "computers" to do the calculations.
🇺🇸
The narrator stressed all the tanks are filled then the moments of the oil tanks are subtracted. Why? At take off the tanks are intended to be full.
The basic arm is the CG?
What and why is the basic index?
🌎👍❤
"iron-pants" le may, ripped out ALL of the guns and gunners for more fuel and napalm fire booms, saying "B-29 gunners have shot down more B-29's than the japanese."
Quick before they all pass, ASK those who served in the B-29's--as they fire boomed over 300 cities, leaving only 7 on the lists.
The Officers and men called him "Iron pants 'because he took this plane DOWN to 2000 feet- single file, with HE leading them all on the raids. The Officers/pilots (w/o IRON_PANTS) sat on their combat helmets to fly through.
A shame what has happened to this once great company.
end stage capitalism