737-300/500 wheel load weight distribution
 

Good day all,

am seeking assitance on trying to determine the weight thats 'loaded' on each landing/gear wheels that contact a surface - I.e. a hangar floor.

A 737-500 has an MTOW of 61 tons approx. So when an aircraft is parked on the ramp/hangar. What weight load is on the nosegear/left/right.

I'm assuming 1/3 of the weight is on the front gear/wheel ?

Appreciate any assistance on this.

cheers
Dom

Check these documents:
Tarmac loads:
http://www.boeing.com/commercial/air...ps/737sec7.pdf

The rest:
http://www.boeing.com/commercial/airports/737.htm

Landing gear B747
 

Hi everybody,
I'm an Aerospace MSc student in Kingston University of London.
I'm working on a B747 landing gear project.
I need, if is possible, some images, photos and real dimensions in order to design with Cad/Cam the main parts (Wheels, brakes, piston, actuator...) and then assemble them.
If you have some info let me know, please.:ok:
Best
Andrea

chksix has given the reference. Rule of thumb is typically 95% of the weight on the main gear, and this is equally spread amongst the wheels on the main gear (4 wheels for the -500).

If you are building a floor, design it for the heaviest 737-900 since no-one will remember you've used the -500 in design. Or use a wild rule of thumb and add 2 inches to the designed concrete depth.

Are hangar floors normally designed for max weight of the aircraft type or would it be "safe" to assume that the plane coming in will be defueled and offloaded first?

I guess the cost wouldn't differ much in the end for building the baseplate though so this is a hypothetical question. :}

I couldn't comment whether the plane is defuelled before it goes in the hangar - I would have thought that it would have some fuel in it but no passengers/cargo. So I would design for partly loaded, and include the heavier 737 models.

Slab thicknesses (subject to assumptions and not to be used for real) for the 737-500 empty at 32 tonnes needs 210mm, and laden at 61 tonnes needs 325mm. This is on a fair-poor subgrade with a 150mm cement stabilised base underneath, and no frost.

The 737-800 needs 345mm laden at 79 tonnes and 230mm unladen at 41 tonnes.

Seems to me that a concrete floor slab 300mm thick would keep you out of trouble for years to come; and 250mm would hold up for a few years by which time everyone will have forgotten who built it. I'd choose 300mm because concrete is hard to fix once it breaks.