Weight and moment problem that is beyond my education level!
Weight and moment problem that is beyond my education level!
(OP)
The basic gist: We are preparing to crane an aircraft on top of some concrete pylons in order to conduct some testing. What I need is to be able to calculate the weight at both the forward and aft landing gear. Calculating CG is easy but this one has me stumped. Here are the figures I have to work with:
Weights are in lbs and distance from datum in inches.
Basic acft weight:
Fwd gear 14707 @ STA 245
Aft gear 8008 @ STA 515
Items Added
Equipment 2588 @ STA 33.5
Pilots 480 @ STA 75
Sling 850 @ STA 320
Fuel 2000 @ STA 317
I know the items added above can be simplified as:
Items Added 5918 @ STA 305.2
So with the additional weight added what is the weight at the forward and aft landing gear?
If anyone can help me out with the formula I would be very appreciative!
Thanks,
Mike
Weights are in lbs and distance from datum in inches.
Basic acft weight:
Fwd gear 14707 @ STA 245
Aft gear 8008 @ STA 515
Items Added
Equipment 2588 @ STA 33.5
Pilots 480 @ STA 75
Sling 850 @ STA 320
Fuel 2000 @ STA 317
I know the items added above can be simplified as:
Items Added 5918 @ STA 305.2
So with the additional weight added what is the weight at the forward and aft landing gear?
If anyone can help me out with the formula I would be very appreciative!
Thanks,
Mike





RE: Weight and moment problem that is beyond my education level!
No they can't. The dimension is wrong. It should be 173.8
All you are doing is taking moments about the origin.
So call the additional front force F, and the rear one R
F+R=5918
F*245+R*515=5918*173.8
Cheers
Greg Locock
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.
RE: Weight and moment problem that is beyond my education level!
Mike
RE: Weight and moment problem that is beyond my education level!
Cheers
Greg Locock
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.
RE: Weight and moment problem that is beyond my education level!
Take an aircraft with a total weight of 28633 lbs with a CG at sta 332.92. If scales were placed at stations 245 and 515 what would they read?
RE: Weight and moment problem that is beyond my education level!
sorry