Today is Standards & Practices Day. Each of the following industries is holding meetings: Airline Affairs, Ground Vehicles, Marine Industry, Military Aircraft, Missiles and Space, and Offshore Industry.
The day started with an overview from Andy Schuster. Just a reminder of the comment tracking for S&P public review on the SAWE website. Documents are often posted for the public review from members of the society. Even if a document is not posted for a review, you can document a comment and when the document is under its 5 year review the comment will already be documented. The site to do this is http://sawe.org/rp
Incoming VP S&P, Doug Fisher, discussed his goals for his term and how he hopes we can and will be successful.
We started off the conference with opening speaker, Dawn Schaible, Director of Engineering at NASA Langley Research Center. She provided insight to NASA Langley’s past, present, and future. She overviewed NASA’s planned return America to the moon in 2024. This will include America’s first woman to step foot on the moon.
Anne Weiss and Rosemary Smith followed up with a rousing and eye opening presentation on how learning is changing for children. We need to reimagine learning and we need to inspire the future STEM students
The Statistics Session 1 had great presentations by Doug Fisher, Manuela Bucci, and David Hansch. Manuela was presented with honorary mention for her paper with Colin MacFarlane.
Bill Boze, John Hargrave, and Yi-Ling Tam presented after lunch on the Mass Properties Certification SAWE is working towards. They reviewed the benefits for SAWE and its members, market survey results that have helped build their roadmap, and a notional model. If you want to be involved in the certification process, please contact Yi-Ling
Anjie Emmett started off the afternoon statistics session. Having worked on the abort system for the Orion space crew module, she discussed applying the law of propagation of uncertainties. Robert Hundl followed with an overview of evaluating Center of Gravity Envelope using a probabilistic approach. He went over Monte Carlo Simulations in Excel and how we can use these for sensitivity studies as well as providing us with a sense of risk.
I ended the day with Nick Marickovich’s presentation on his journey on the Appalachian Trail and how backpack weight effected this. Great presentation!
I would love to hear how the other sessions went and your thoughts on the day and the presentations!
The international conference in Norfolk is under way! The board of directors met yesterday, your chapter directors were in attendance. Talk to your chapter director if you wish to find out more of what type of items were voted on and discussed!
There are some prime opportunities to see the International Space Station go overhead during the upcoming conference. Saturday morning and night, it will reach a max height of a whopping 80+ degrees overhead. Check out the link below for your opportunities.
We have changed the format of SnP Day on Tuesday of the SAWE Conference in Norfolk VA. We will only have a 30 minute opening an no recap session at the end of the day. This will give each industry committee more time for discussions and some other exciting activities. The industry committee meetings will be from 8:30 to 5:00PM with the traditional coffee breaks and SnP Luncheon from 12:00 to 1:30 PM.
I am pleased to announce the following additional activities:
RP C- 9 Data Exchange – ISO-10303-242 Meeting from 3:30-5:00 in room 1783
Sebastian-Verian Herda will lead a meeting to define the scope of their project titled Mass Properties Digital Data Attributes for PLM data exchange & Reporting, The purpose of the meeting is to review and to agree on a Project Proposal. As I understand it (Andy Schuster VP-SnP), the purpose of the project is create cconsistent PLM data and exchange protocols will simplify MPD functionality set up in PLM & ERP systems. The STEP AP 242 file (ISO 10303-242) is a system independent file format and is the best established specification within the Automotive, Aerospace, and Defence industries. It specifies the application protocol for Model based 3D engineering. The STEP effort will be added to the other data exchange methods used by SAWE members such as MPEX, and RP M-1 to create a Cross Industry Function Recommended Practice. The meeting will clarify my interpretation.
Mass Properties Engineer Certification Discussions
Each Industry Committee has set aside an hour of the day to discuss the impact of this program to their industry. The program will be presented in a 90 minute presentation on Monday afternoon during the technical session. The program leaders Yi-ling Tam, John Hargrave, Bill Boze and Clint Stephenson, will visit each meeting to get feedback based on a set of open ended questions to draw out your opinions. From discussions at the SnP Standards Review Board meeting, we know that the impact of the Mass Properties Engineer Certification program will be dramatically different between industries, and we want to know how dramatic. For example the Marine and Military Aircraft industries may want everything in English, while the Offshore industry may want the training materials and exams in English, Portuguese and Korean so that the detailed design and construction workers can do things in their native language. The committee would like your thoughts on the program.
Weight Engineers Handbook – Update Discussions
Damian Yanez, and Andy Schuster will visit each Industry Committee for a 30 minute discussion of what should be updated in the new revision of the handbook. For example :
We know that some sections are so out of date (i.e. Crew Systems and Power Systems from the 1960’s Mercury program), and need to be updated. The existing sections will not help us to get to the moon in 2024 or mars in 2035.
We will also ask each IC to commit to reviewing sections in the handbook that apply to their industry, by the end of the summer. All we want to know whether the 2011 edition has the right information.. For example we’ll ask the marine Industry Committee to review the Marine section of the Handbook for errors omissions, etc.
Finally, we will get commitments from those Industry Committees such as the offshore, for their schedule to provide a new section to the handbook.
The Gulfstream team of MPE’s is about a third of the way through converting the old handbook into MS Word. This is a significant accomplishment!!! We owe it to them to assure the data they convert or include is up to date and accurate.
SAWE has been blessed with a great supply of technical content for our May conference in Norfolk VA. Earlier the technical committee had started to refuse submissions due to a lack of presentation slots. It is now planned to open up an additional technical track, and so be able to include all of the initially proposed as well as some later incoming papers. We hope this is another great reason for you to attend our conference. Attendee’s receive electronic copies of our technical content as well. So get registered, and get your accommodations. Remember, registrations conducted after May 3rd incur a $50 late charge, and training course registrations are to be completed no later than April 19th.
ANSI-SAWE STD M-4 is in the committee draft review stage and has been posted on the Standards Public Review page. Any comments should be submitted by 5/1/2019.
RP A-7 is in the committee draft review stage and has been posted on the Standards Public Review page. Any comments should be submitted by 5/1/2019.
RP O-3 is in the public draft review stage and has been posted on the Standards Public Review page. This document is available for anyone to review (general public or SAWE member). Any comments should be submitted by 4/26/2019.
Automotive Lateral Dynamics and Mass Properties
by Brian Paul Wiegand
On May 20th at the Norfolk Hilton (“The Main”) an eight-hour course in “Automotive Lateral Dynamics” will be offered under the auspices of the SAWE as part of the society’s 78th International Conference. The course objective will be to enable the attendees to make reasonably accurate maximum lateral acceleration, rollover lateral acceleration, directional stability, and steering responsiveness determinations in the course of vehicle design. In route to attaining that objective, attendees will also become acquainted with such things as the calculation of roll resistance, suspension roll center location, sprung mass roll axis inclination, sprung mass roll inertia, sprung mass roll moment arm, sprung mass roll angle under lateral acceleration, vehicle roll gain, vehicle dynamic index in yaw, transient center of rotation location, and transient yaw inertia. There will also be considerable time spent on “Ackermann Steering Geometry” relationships and the behavior of tires under lateral load.
The seminar achieves its objective through a classical engineering approach that emphasizes determining vehicle lateral performance through simple models and simulations which are easy to comprehend and apply. Mass properties will play a major role as attendees will become acquainted with the principles of “weight accounting,” mass properties manipulation, and mass properties optimization.
This seminar is very important for anyone engaged in vehicle design, in particular, those designing with an emphasis on performance, and special effort has been expended to make it particularly relevant for those involved in the SAE Student Formula Design Competition. However, no one completing this course will walk away without having acquired some degree of enlightenment; as well as a Certificate of Achievement, print-out of the course Vu-Graphs, electronic (flash drive) copies of the SAWE Paper #3528 (“Mass Properties & Maximum Lateral Acceleration”), and the seminar’s “Maximum Lateral Acceleration Estimation Spreadsheet” (MS-Excel).
The course is open to students and mass properties professionals alike; the cost of registration for full-time students is only $50! Individuals desirous of attending this seminar should inform their student motorsport team leaders, contact firstname.lastname@example.org, and/or register on the conference web site at http://www.sawe.org.
According to a survey conducted by the Society of Allied Weight Engineers in 2018, organizations that design, build and/or operate aeronautical, marine, offshore or land vehicles need to promote the value of mass properties engineers within their organization to ensure vehicles can operate to their intended performance and safety parameters. Simultaneously, organizations must focus on replacing and transferring the knowledge and experience of mass properties engineers who will be leaving in large numbers in the next 5 to 10 years.
The aforementioned is the leading paragraph to a letter being distributed to the leaders in government and industry to promote the value of mass properties engineering, while also inviting them to learn more about SAWE and how SAWE can address the collective needs of those organizations who need competent mass properties engineers. The attached letter and accompanying enclosure have been distributed to the leadership of over 200 addressees worldwide. We want to increase the reach of this letter by asking you to share it with your fellow mass properties engineers and elevate this letter up your management chain to garner support for increased organizational awareness and involvement. We also encourage you to utilize this letter to secure financial support for attending the next SAWE International Conference in May in Norfolk, Virginia.