Technical advance in aeronautical projects 1

[maguirre]

Does anybody have any idea about an easy way to measure the technical advance of the work, in a Detailed aeronautical Design? The released weight? but with the 100% of weigth released, still remains the assy and installation drawings, which doesn,t add weight.

Than you!!

 

[whylie]

Dear maguire,

Iam not an aeronautical engineer,but the approach to % progress,is decided by you or your firm,i.e you devide the project activities into : 1. Design (0-100 % ) ,with a weight of say 30% of the total activities,so when it 100% complete ,this means (100% x 3o% )= 30% project completed

Next manufacturing weighted value (say 50% ),when all complete it is (100% x 50% ) = 50%

Now assembly ,weighted value (20% ),and only 50% is complete,so (50% x 20% )=10%

So total completion is 30% (design)+ 50% (manufacturing)+ 10% (assembly) = 90%,so another 10% is to be completed before you go on the runway !!


I hope ,I am in the right direction


Regards,

Whylie

 

[macdonaldallan]

For anyone in Aerospace the guiding factor should be Augustine's Laws. A good (working) link is:

http://www.laughnet.net/archive/misc/augesti.htm

For this topic law # XV applies:

LAW NUMBER XV:

The last 10 percent of performance generates one-third of the cost and two-thirds of the problems.

 

[RDK]

When you create your work breakdown structure, that is the listing of tasks involved in the project, define AT THAT TIME what constitutes completion of that task as well as the weighting of that task in relation to the complete project.

Use tasks small enough so that each is easily manageable but not so small so that the project structure becomes overly cumbersome. In construction a good rule of thumb is keeping tasks less than $10,000 or so. (Unless it is the delivery of a major item of equipment.) You may want some other criteria say man-hours of design time.

The weight to of a task can be based on the $ value, the man-hours spent on the task or some other criteria. You can also use multiple weighting of tasks. That would allow you to sat that the project is x% complete based on man-hours, y% complete based on dollars expended and z% complete based on number of critical tasks completed.

I don’t know anything about aeronautical design but I would think that released weight is not a good measure. The heavy components may be easy to design (and therefore take less man-hours) and the final small components may be light and time consuming to design.



Rick Kitson MBA P.Eng

Construction Project Management
From conception to completion

http://www.kitsonengineering.com