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Mar09

A Systems Engineer Grows Up

by jsili

By Jeff Sili, Vitech Principal Systems Engineer

Silicon Valley icon and industrial designer Steve Jobs had a favorite dictum when he spoke to young audiences. “Your work is going to fill a large part of your life, and the only way to be truly satisfied is to do what you believe is great work. And the only way to do great work is to love what you do.”

By way of introducing myself, I’d like to take you along as I reflect on my journey through the wilds of systems engineering, an adventure that has brought me to where I am today—the newest team member in Professional Services at Vitech.

I’m Jeff Sili, and I’ve been a systems engineer for nearly three decades. I hail from the "Rust Belt" near Cleveland, Ohio and had a great time growing up in a big, blue collar neighborhood. The community was interesting and diverse—a place where first and second generation grandparents were still speaking languages like German and Italian. My dad was a machinist-mechanic, and he gave me my first taste of what it was like to "take it all apart and put it back together again." As a teenager in the ’70s, I watched the collapse of the economy in big cities like Cleveland, the demise of steel and other industries and with them, jobs. More...

Feb02

Mission Engineering Analysis in CORE / GENESYS

by rkratzke

By Ron Kratzke, Principal Systems Engineer

Over the past year there has been an increased interest in performing “Mission Engineering” during initial concept development. This has come about for many reasons, one of which is an effort to ensure that subsequent operational and system architectures – and the systems developed to support them – are aligned with and support the missions for which they were designed in the first place. More...

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Categories: CORE Software | GENESYS | MBSE

Jan19

Helping Humans Survive in Space

by mrich

“Whenever it came time for milestone reviews, we were able to satisfy all of the customer’s requirements.” – Stephanie Chiesi, senior systems engineer (Photo copyright 2012 Arizona Daily Star)

Miriam Rich, Vitech Marketing & Communications Manager

“We [humans] put out CO2 and moisture,” explained Grant Anderson, CEO of Paragon Space Development Corporation. “If you don’t take these out of the air in a spacecraft, water can condense, causing bacteria growth, shorting out equipment, or clogging critical airflow passages, and the CO2 can cause carbon dioxide poisoning.” 

Needless to say, such events are unacceptable and are why consideration of a humidity control system in a spacecraft is highly critical.

Stephanie Chiesi, senior systems engineer, worked on the humidity control subassembly for Boeing’s Crew Space Transportation (CST)-100 spacecraft while she was at Paragon Space Development Corporation. The team that Chiesi was part of designed the humidity control subassembly system for NASA’s commercial crew program.

“Humidity control in a spacecraft is unlike the system for your house, because you have to take into consideration the closed loop environment of the vehicle, as well as the conditions the system needs to survive during launch and reentry,” Chiesi explained, “factors which aren’t part of the day to day concern for humidity control in a house on Earth.”

“That’s why Vitech’s CORE [systems engineering software tool] was so helpful as we designed the CST-100,” Chiesi said.  More...

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Categories: CORE Software | MBSE

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