Need help with W+B formulas.

captainphil · March 14th, 2006, 19:27

We started a more advanced part of weight and balance today at tech and I need two things I missed, how do you find the payload and the ballast, thank you for your help.

KBUF · March 14th, 2006, 19:59

Payload is the weight of the passengers, baggage and cargo.

Just add this up. On a typical instruction flight, it is you, your instructor and your flight bags. This is different than useful load...know this. Useful load is payload+useable fuel.

Ballast is just wieght you add to the airplane, usually for GA it is to get the CG in range-i.e. you have a heavy passenger that puts the CG too far foward, so then you put the ballast in the cargo compartment (somewhere behind the CG). It is usually sandbags.

captainphil · March 14th, 2006, 20:47

Quote:

Originally Posted by KBUF

Payload is the weight of the passengers, baggage and cargo.

Just add this up. On a typical instruction flight, it is you, your instructor and your flight bags. This is different than useful load...know this. Useful load is payload+useable fuel.

Ballast is just wieght you add to the airplane, usually for GA it is to get the CG in range-i.e. you have a heavy passenger that puts the CG too far foward, so then you put the ballast in the cargo compartment (somewhere behind the CG). It is usually sandbags.

ok so that doesnt include fuel or oil, so lets say you have a passenger weighing @170lbs your cargo is @ 190lbs and your pilot/copilot together are @318lbs , your total payload would be 678 lbs?

KBUF · March 14th, 2006, 20:50

Yup,

the oil, unusable fuel, other fluids (hydraullic etc.), standard airplane, optional equipment add up to give you basic empty weight.

captainphil · March 14th, 2006, 20:51

Thank you so much!!

captainphil · March 14th, 2006, 21:11

Holdon one more question,lol , yes I know I can be a handful

.Don't you get useful load from taking the total empty weight and subtracting it from the max gross weight?

KBUF · March 14th, 2006, 22:01

Yes, that is correct.

Just one thing though...as a student pilot, you probably ask a lot of questions to your instructor and here, which is a great thing...you are not a handfull! However, it is good, especially for when you go and take your oral tests, to know where to look things up in case you don't know the answer to a question. Always research if practical before asking. Also, if you find the answer, but don't understand it 100 percent, never hesitate to ask questions. Good luck in your training!!

captainphil · March 14th, 2006, 22:16

Yes, I will not hesitate, thank you for wishing me luck KBUF.My teacher is teaching us mostly stuff that he said is college material because he wants to get us ready faster , that's why I always sound like im rushing, but a good pilot should take his time.However, when our class takes notes he just reads them aloud and wants us to write them down. Sometimes he goes faster than all of us can write which is what makjes things confusing because I can't always interupt him and when we always ask he gets sorta irritated. But I like the guy alot becaus eanyone interested in aviation is a friend o' mine

.

Stone Cold · March 15th, 2006, 09:25

Remember, you're the customer, paying lots of money for this instruction. Let him get irritated...you need this info. As far as I know, this is NOT college material. I taught that kind of stuff to my PVT studs.

Good luck and keep in the books. You might want to look in the W&B part of the POH (Chapter 6) for more info on this subject.

TX

captainphil · March 15th, 2006, 13:15

Quote:

Originally Posted by txpilot

Remember, you're the customer, paying lots of money for this instruction. Let him get irritated...you need this info. As far as I know, this is NOT college material. I taught that kind of stuff to my PVT studs.

Good luck and keep in the books. You might want to look in the W&B part of the POH (Chapter 6) for more info on this subject.

TX

Actually txpilot, this course is payed through by tax like regular school because it's a function of my homeschool.I'm not paying a dime. There are classes in many locations for tech such as culinary arts , auto mechanic etc. being that I want to eventually fly for the airlines I choose aviation/flightscience/pilot course. Immediatley when I walk through the doors I could tell i'd love that class.The teacher teaches across the street at suny so maybe he thinks we're his suny class

.I am taking total advantage of this year and next years classes this way I have a heads up for college. Thanks for the tip i'll ask my teacher if I could borrow the pilot operating handbook for the weekend.

Stone Cold · March 15th, 2006, 13:56

That's awesome. Glad to hear somebody is taking advantage of what's out there. Try to borrow the POH. If you're using a specific a/c let me know...I have a POH or two around here that I may be willing to donate to a worthy cause. No, I'm not getting rid of all my POH's, I do have a couple of duplicates, though.

TX

frog_flyer · March 15th, 2006, 16:06

argggghhh. i bet you have a 172m laying around! wish i woulda known that before i shelled out 35!

captainphil · March 15th, 2006, 19:22

Quote:

Originally Posted by txpilot

That's awesome. Glad to hear somebody is taking advantage of what's out there. Try to borrow the POH. If you're using a specific a/c let me know...I have a POH or two around here that I may be willing to donate to a worthy cause. No, I'm not getting rid of all my POH's, I do have a couple of duplicates, though.

TX

The a/c im flying now are 172s/ and a substitute 152 sumtimes .

March 14th, 2006, 19:27	#1
captainphil Senior Member Join Date: Mar 2006 Posts: 404	Need help with W+B formulas. We started a more advanced part of weight and balance today at tech and I need two things I missed, how do you find the payload and the ballast, thank you for your help. __________________ The sky is calling!!

March 14th, 2006, 19:59	#2
KBUF Junior Member Join Date: Nov 2005 Location: Buffalo, NY Posts: 213	Payload is the weight of the passengers, baggage and cargo. Just add this up. On a typical instruction flight, it is you, your instructor and your flight bags. This is different than useful load...know this. Useful load is payload+useable fuel. Ballast is just wieght you add to the airplane, usually for GA it is to get the CG in range-i.e. you have a heavy passenger that puts the CG too far foward, so then you put the ballast in the cargo compartment (somewhere behind the CG). It is usually sandbags. __________________ Patrick

March 14th, 2006, 20:50	#4
KBUF Junior Member Join Date: Nov 2005 Location: Buffalo, NY Posts: 213	Yup, the oil, unusable fuel, other fluids (hydraullic etc.), standard airplane, optional equipment add up to give you basic empty weight. __________________ Patrick

March 14th, 2006, 20:51	#5
captainphil Senior Member Join Date: Mar 2006 Posts: 404	Thank you so much!! __________________ The sky is calling!!

March 14th, 2006, 21:11	#6
captainphil Senior Member Join Date: Mar 2006 Posts: 404	Holdon one more question,lol , yes I know I can be a handful .Don't you get useful load from taking the total empty weight and subtracting it from the max gross weight? __________________ The sky is calling!!

March 14th, 2006, 22:01	#7
KBUF Junior Member Join Date: Nov 2005 Location: Buffalo, NY Posts: 213	Yes, that is correct. Just one thing though...as a student pilot, you probably ask a lot of questions to your instructor and here, which is a great thing...you are not a handfull! However, it is good, especially for when you go and take your oral tests, to know where to look things up in case you don't know the answer to a question. Always research if practical before asking. Also, if you find the answer, but don't understand it 100 percent, never hesitate to ask questions. Good luck in your training!! __________________ Patrick

March 14th, 2006, 22:16	#8
captainphil Senior Member Join Date: Mar 2006 Posts: 404	Yes, I will not hesitate, thank you for wishing me luck KBUF.My teacher is teaching us mostly stuff that he said is college material because he wants to get us ready faster , that's why I always sound like im rushing, but a good pilot should take his time.However, when our class takes notes he just reads them aloud and wants us to write them down. Sometimes he goes faster than all of us can write which is what makjes things confusing because I can't always interupt him and when we always ask he gets sorta irritated. But I like the guy alot becaus eanyone interested in aviation is a friend o' mine . __________________ The sky is calling!!

March 15th, 2006, 09:25	#9
Stone Cold Old Skool Join Date: Oct 2003 Location: SE US Posts: 2,975	Remember, you're the customer, paying lots of money for this instruction. Let him get irritated...you need this info. As far as I know, this is NOT college material. I taught that kind of stuff to my PVT studs. Good luck and keep in the books. You might want to look in the W&B part of the POH (Chapter 6) for more info on this subject. TX

March 15th, 2006, 13:56	#11
Stone Cold Old Skool Join Date: Oct 2003 Location: SE US Posts: 2,975	That's awesome. Glad to hear somebody is taking advantage of what's out there. Try to borrow the POH. If you're using a specific a/c let me know...I have a POH or two around here that I may be willing to donate to a worthy cause. No, I'm not getting rid of all my POH's, I do have a couple of duplicates, though. TX

March 15th, 2006, 16:06	#12
frog_flyer Old Skool Join Date: Jan 2006 Location: FTW Posts: 4,008 Blog Entries: 1	argggghhh. i bet you have a 172m laying around! wish i woulda known that before i shelled out 35! __________________ "There needs to be more drinking here on JC. We need more ******* partying!" -Doug Taylor 210TT 20 ME

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