Alumni Spotlight Shines on Physics ‘Star’ Daniel H. Chang, PhD., Class of 1985

28 years after earning dual degrees from MIT, a fellow Friar let present-day students glimpse his Jet Propulsion Lab work for NASA.

By Mark Vruno

When alumnus Dan Chang, PhD. ’85 returned to Fenwick last November, he felt right at home talking to students in the school library. Ever since immigrating to northeast Illinois from Taipei, Taiwan, in 1976, Dr. Chang has had an affinity for libraries and books.

Chang was a National Merit Scholarship Finalist in 1984-85 (Blackfriars yearbook photo).

Ten-year-old Chang spoke no English when he came to the United States. His father was a diplomat for the Taiwanese consulate in Chicago. During the summer, when their mother was working as a medical technician, his sister Anne and Dan went to the public library “almost every day,” he told the Forest Park Review eight years ago, “and I read every book about physics, space and aviation.” Before applying for a scholarship to Fenwick as an eighth grader, the future rocket scientist attended Grant-White, and then Field-Stevenson elementary schools.

“Let’s talk about the universe,” Chang engaged one group of science students last semester, as he booted up a customized PowerPoint presentation. Over the past four decades, there have been some rather astonishing developments as the field of astronomy became less Earth-centric, he told present-day Friars: “When I was in high school, we didn’t know there were other stars with planetary systems. Now, we know there are nearly 4,000 exoplanets!” (An exoplanet, or extrasolar planet, is a planet outside of our solar system.)

“Did you know there are more planets than stars in the galaxy?” Chang continued. “Small planets are common, even in the Habitable Zone, but they are too dim to see through a telescope,” he added. In astronomy and astrobiology, the circumstellar habitable zone (CHZ) is the range of orbits around a star within which a planetary surface can support liquid water given sufficient atmospheric pressure. Such complexity is par for the course for Chang, who was a straight-A student at Fenwick, a National Merit Scholar Finalist and one of three valedictorians from the Class of 1985. (Chris Hanlon and Ray Kotty are the other two.)

Chang went on to study at the prestigious Massachusetts Institute of Technology (MIT). He says he “held my own” at the private research university and earned a bachelor of science in aeronautics/ astronautics, then a master’s degree in dynamics/control. After moving to the West Coast to work for NASA’s Jet Propulsion Laboratory (JPL, see below), he would go on to a doctorate, in electrical engineering and photonics, from the University of California at Los Angeles (UCLA) in 2002.

Dr. Chang reunited on Nov. 22 with Math Coach Mr. Roger Finnell ’59 (center) and old pal, classmate and Fenwick Math Teacher Ray Kotty ’85.

In the aforementioned newspaper article, ’85 classmate Kotty, who has taught math at Fenwick since 1993-94, described his former Computer Club and “mathlete” teammate as “a little bit more [of] a risk-taker than the other guys in the math-club group. He was always going to go ahead and blaze his trail.” Outside of school, the two mathematical whizzes attended weekend astrophysics classes together at Chicago’s Adler Planetarium — and have remained friends over the years.

Chang told students in November, “For the record, Mr. Kotty beat me in just about every math competition at Fenwick!”

Demanding yet kind

Former Chemistry Teacher and JETS Coach Mr. Ramzi Farran (in 1985).

As a high-school student, Chang never experienced faculty legend Roger Finnell ’59 (long-timeMath Department Chairman) in the classroom per se. Mr. Finnell was — and is — moderator of Fenwick’s storied Math Competition Club. Chang fondly remembers what he calls “rigorous” teachers, including Mr. Ramzi Farran (chemistry and JETS coach) and Mr. John Polka (biology), both recently retired, as well as the late Mr. Edward Ludwig (calculus) and Fr. Jordan McGrath, O.P. (pre-calc.), who passed away in 2018.

Chang calls the late Mr. Ed Ludwig, who taught calculus, Fenwick’s “Director of Happiness.” (1964 photo)

“They all were very kind but very demanding,” he remembers, adding that Ludwig and McGrath were not perceived as being kind, initially. “They seemed harsh at first. They pushed us,” explains Chang, who jokingly refers to Ludwig as the Fenwick’s “Director of Happiness.” Looking back, however, the former student appreciates these teachers’ collective toughness.

Other Fenwick teachers were as influential, if not more so, to Chang’s developing, teenage brain. “Math always was easy [for me] to do,” he admits. “It is a rich but one-dimensional subject. Large, open-ended subjects, such as history and literature, are different.” As a sophomore in 1982-83, he discovered cognitive enrichment in honors English with Fr. Dave Santoro, O.P., honors history class with Mr. John Quinn ’76 and speech class with Mr. Andrew Arellano. In those courses of study, “I learned how to think and debate. I developed political opinions. The strategic thinking and soft-skills I began to glimpse then are arguably as important to my job today as the technical, ‘hard-skills.’”

“The strategic thinking and soft-skills I began to glimpse then [at Fenwick] are arguably as important to my job today as the technical, ‘hard skills.’”

Dr. Dan Chang

Back to school

Dr. Chang talks with students in Fenwick’s John Gearen ’32 Library.

This past November, Chang explained to students the discovery of exoplanets by employing the so-called “stellar-wobble” method, as well as the transit photometry method. Doppler spectroscopy (also known as the radial-velocity method, or colloquially, the wobble method) is an indirect method for finding extrasolar planets and brown dwarfs from radial-velocity measurements via observation of Doppler shifts in the spectrum of the planet’s parent star; while the transit method essentially measures the “wink” of a star as an exoplanet passes before it. (The Nobel Prize in physics for 2019 was awarded partially for the first exoplanet discovery, employing the radial velocity method.)

Chang spent several years of his career on JPL’s Stellar Interferometry Mission (SIM), which was an attempt to discover exoplanets using yet another method – direct astrometry, but with unprecedented precision. SIM proved to be too much of a technological stretch and was cancelled in 2009. “The technology is very difficult,” Chang stressed, “measuring angle changes down to approximately 4 micro-arcseconds,” which is about a billionth of a degree. (An arcsecond is an angular measurement equal to 1/3600 of a degree.)

During his nearly 29-year career at JPL, Chang’s technical contributions and leadership have been recognized with numerous individual awards, including the NASA Honors Award in 2007. For the past three and a half years, he has been the project manager of JPL’s Program Office 760, which is known as the “Technology Demonstrations Office.” While details cannot be disclosed, he is responsible for the management and technical direction of the more than 100 people who work within the classified program. Chang, who reports to  JPL’s Director for Astronomy and Physics, was Office 760’s chief engineer for two years prior to overseeing the program.

“This part of astrophysics is close to my heart, but let’s now look at an engineering tour de force,” he proclaimed to the young, fellow Friars, switching gears and delving into the basics of how the Mars landing system works.

No crash landings with Sky Crane: NASA has spent more than
$200 million to develop a propulsive, soft-landing system using a massive parachute for potential use on Mars. The helium balloon has a 110-foot diameter – a canopy big enough to fill the Rose Bowl football stadium in Pasadena, California!

“The United States still is the only country that has successfully landed vehicles on Mars (the massive Curiosity rover in 2012 being the most recent),” he informed the students. “We have been [remotely] driving around up there for seven years.” From 2004-07, Chang served as a principal investigator under the Mars Technology Program (MTP), for which he helped to develop LIDAR for lander terminal guidance.

Mars 2020: Set for launch this coming July, the new, yet-to-be-named rover is powered by plutonium and may carry a helicopter, a NASA spokesperson says.

With all the Martian craters and high-wind dust storms (up to 70 mph), “how do you safely land a probe?” he asked.  JPL succeeded in 1997 with its toy-car sized Pathfinder robotic spacecraft, which employed the new (at the time) technology of airbag-mediated touchdown. JPL returned again in 2004 with MER, again using airbags and a crude, wind-compensating rocket system called DIMES. However, for the Mars Science Lab mission in 2012 that landed Curiosity – “essentially a nuclear-powered, 2,000-pound MINI Cooper – we had to resort to lowering the probe on a tether to solve the egress problem and other challenges.” This technology is NASA’s rocket-powered Sky Crane, developed for the Curiosity landing and will be used again when the Mars 2020 mission attempts its next landing. “It was surprising to us that it worked!” Chang remarked.

Animation of Mars Helicopter: The small, autonomous rotorcraft is designed to demonstrate the viability and potential of heavier-than-air vehicles on the Red Planet. “The idea of a helicopter flying the skies of another planet is thrilling,” says NASA Administrator Jim Bridenstine.

In less than 12 months, another robotic rover could be roaming and exploring the “Red Planet” in a quest to answer that age-old question: Are we alone in the universe? Scheduled for a July 17 launch, Mars 2020 should touch down in Jezero crater (on Mars) on February 18, 2021. NASA has invested some $2.5 billion in the eagerly anticipated mission. The new, yet-to-be-named rover is expected to carry a small, autonomous rotorcraft known as the Mars Helicopter, Chang shared excitedly.

1-MINUTE VIDEO: How Do You Land on Mars? Very Carefully!

The Fenwick Standard

Chang (far left in 1989) rowed crew all four years as an ungrad at MIT: “Most of my varsity years were spent in the bow seat,” which is the front. “Rowers sit facing backwards,” he notes.

In college, when Chang wasn’t studying or reading in the Cambridge, MA campus library, he blew off steam by rowing crew on the Charles River. These days, when he is not working at JPL or consulting for firms such as Skybox Imaging (acquired by Google and recently sold again to Planet Labs), his hobby is aviation. “I like fixing (mostly) and flying – when I’m not fixing – my plane,” says Chang, who owns a single-engine aircraft.

He also enjoys spending time with his wife, Malina, and their teenage daughter, Natalie. While Chang contends that values, work ethic and good study habits begin at home with the family, he wishes he could find a private secondary school in the Los Angeles area more like Fenwick, which he considers the standard. “I’d gladly pay for rigor and discipline, which are critical,” he says. “Unfortunately, most private schools where I live primarily offer social segmentation.”

“Merit and accomplishment are what matter at Fenwick.”

Dan Chang, PhD. (Class of 1985)

Whether at Fenwick or MIT, “the textbooks teachers use are the same as at other schools,” adds Dr. Chang, who has been interviewing under-graduate candidates in the LA area for his collegiate alma mater since 2006. “The quality of the student body is what determines how far teachers can go, how much they can push [their students].” The Dominican friars foster an egalitarian atmosphere, he concludes: “The relative wealth of the student body doesn’t matter at Fenwick. One’s own merit and accomplishments are what matter.”

Could one of these new NASA astronauts one day travel to Mars or another planet? NASA thinks it will happen before the year 2045.
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Alumni Friars Teaching in Academia

It’s “cool” to be smart at Fenwick, and these Ph.D. scholars have taken their intellectual talents to a higher level as university professors.

By Mark Vruno

Fenwick instructors have honed developing minds of highly intelligent people over thecourse of 90 school years. From physics and politics to English and French, some of those students took their passions for learning to the next level by pursuing research, education and scholarship at some of the world’s most prestigious private and public universities.

Holder Hall at Princeton University, Princeton, NJ, where two Fenwick alumni teach.

At Princeton, the Ivy League research school with New Jersey roots dating back to 1746, two Fenwick alumni-turned-professors can be found teaching on campus: Thomas Duffy ’78 (geophysics) and John Mulvey ’64 (operations research/financial engineering). In Boston, Professor William Mayer ’74 has been a political-science guru at Northeastern University (established in 1898) for the past 28 years. After Fenwick, Mayer attended Harvard University in Cambridge, Massachusetts, from which he also earned a Ph.D. (in 1989). “I don’t like to move,” he dead-pans, “plus my wife loves the New England area.”

On the West Coast, one of Prof. Duffy’s classmates, Larry Cahill ’78, is a neuroscientist and professor in the Department of Neurobiology and Behavior at the University of California at Irvine. And in the Midwest, Robert Lysak ’72 is professor of physics and astronomy at the University of Minnesota in Minneapolis – Saint Paul.

Additionally, two members of the Class of 1961 were college professors and are now retired: Terrence Doody (English Literature) at Rice University in Houston and Thomas Kavanagh (French), most recently at Yale University in Connecticut. Another Professor Emeritus isJohn Wendt ’69, who taught Ethics and Business Law at the University of St. Thomas (Minnesota) for 30 years. (Read more about them.) Spread out geographically across the United States, Fenwick is the common denominator for these seven Ph.D.’s and college professors. Read on for a glimpse at their impressive works.

A Computing Love Affair

John Mulvey in 1964.

John Mulvey is a professor within Princeton’s Operations Research and Financial Engineering (ORFE) Department, which he founded. He also is a founding member of the interdisciplinary Bendheim Center for Finance as well as the Statistics and Machine Learning Center at the university. Mulvey is captivated by the ongoing revolution in information and machine-learning. The ORFE Department focuses on the foundations of data science, probabilistic modeling and optimal decision-making under uncertainty. “Our world is a very uncertain place,” he stresses.

The work Mulvey does has applications throughout the service sector, including in communications, economics/finance, energy/the environment, health-care management, physical and biological sciences, and transportation. In the past, he has worked with aerospace/defense-technology firm TRW (now part of Northrop Grumman) to help solve military problems, including developing strategic models for the Joint Chiefs of Staff (U.S. Department of Defense).

“Today we work with major firms, including some of the largest investors in the world, which are interested in integrating their risk,” Mulvey explains. For example, “hedge funds and private-equity firms need to manage their portfolios over time to protect themselves. When the crash occurred in 2008, people thought they were diversified. The banking and finance world refers to systemic risk as contagion,” which is the spread of market changes or disturbances from one regional market to others.

Mulvey also analyzes data for supply-chain management, which he calls a “transformative industry. Production and distribution models were separate before,” he points out, “but we’ve brought it all together now. Amazon has built its whole system based on this commerce model.”

Prof. Mulvey at Princeton.

Machines running algorithms and computer optimization became passions for him at a relatively young age. At Fenwick, Mr. Edward Ludwig helped mathematics to make sense for young John. “He was an amazing math teacher,” Mulvey says of Ludwig. “His class was fantastic. I didn’t necessarily want to be an engineer but felt I could go into a technical area.

“In the 1960s we were at the cusp of computing, and the University of Illinois had one of the world’s most powerful supercomputers at the time,” recalls Mulvey, who grew up on the West Side of Chicago and attended the old St. Catherine of Siena Parish. “That’s why I wanted to go there, and I fell in love with computing.”

The ILLIAC IV supercomputer is what drew Mulvey to the University of Illinois in the mid-1960s.

He next ventured west to study business administration at the University of Southern California (USC) and the University of California (Cal), then earned a second master’s degree in management science in ’72 from the University of California at Los Angeles (UCLA). Three years later Mulvey completed his Ph.D. at UCLA’s Graduate School of Management. His dissertation topic, “Special Structures in Large Scale Network Models and Associated Applications,” won the 1976 American Institute of Decision Sciences Doctoral Dissertation Competition.

Mulvey taught for three years at the Harvard Business School and, 41 years ago, came to Princeton “to have an impact at a smaller school,” he says. (Princeton has some 5,200 under-grads.) “I came here to grow the basic, general engineering program for undergraduates.” The 72-year-old thoroughly enjoys his work: “If you had a job like mine, you wouldn’t want to retire.”

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ALUMNI SPOTLIGHT Shines on Coach John Teerlinck, Friar Class of 1969

April 25, 2019

The former LaGrange Park resident and NFL ‘sack tasker’ is Fenwick’s newest inductee into the Chicago Catholic League Coaches’ Hall of Fame.

By Mark Vruno

A defensive lineman, the 6’3″ 225-lb. Teerlinck (#77) was CCL All-Conference for the Friars in his senior season of 1968. “Playing for Fenwick was a big deal,” he says.

Fenwick Fact: Highly acclaimed Defensive Line Coach John Teerlinck ’69 is the only Friars’ alumnus with three Super Bowl rings from the National Football League (NFL). Teerlinck knows how to creatively apply pressure — in a football context, that is.

Teaching elite athletes the proper techniques needed to effectively rush the passer is his specialty, and the coach excelled at the collegiate and highest professional level. Teerlinck has coached in 32 NFL playoff games, including six AFC Championship Games and four Super Bowls.

He is one of only 23 coaches to win a Super Bowl with more than one team: two back to back with the Denver Broncos (1997 and 1998) in the John Elway era and one with the Indianapolis Colts (2006) in the Peyton Manning era. (“Sorry, Bears fans,” jokes Teerlinck, whose family moved when he was eight years old from upstate New York to suburban LaGrange Park, IL.)

In recognition of his sideline accomplishments, this evening the Chicago Catholic League (CCL) will induct Teerlinck, its native son, into the 2019 Coaches Association HALL OF FAME class. Many football observers refer to Coach “Link” as the GOAT: the greatest defensive line coach of all time. The “John Teerlinck Award” is given annually to the best defensive line coach in the NFL.

Teerlinck is being inducted into the CCL Coaches Association Hall of Fame on April 25, 2019.

“Coach Teerlinck has coached many former teammates of mine, and we have friends in common from throughout our professional careers,” says Gene Nudo, Fenwick’s present Head Coach, who was a coach and executive in the Arena Football League before joining the Friars in 2012. “It surprised me to learn that this great coach was an alum of Fenwick. He, like so many others, has done the ‘Shield’ proud with his many professional achievements,” which is what led Nudo to nominate Teerlinck for the CCL HOF honor.

Without much offensive fire-power, the ’68 season was a bit of a disappointment for the Friars and Teerlinck (#77).

When he played defensive line for Fenwick in the 1967 and ’68 seasons, the Fighting Friars’ varsity went a combined 10-5. After a 7-2 junior campaign, a 3-5 record as a senior was disappointing. The defensive unit gave up a respectable 15.5 points per game (ppg) in the autumn of 1968. However, an anemic offense could muster only nine touchdowns all year for a paltry average of 7.25 ppg. Teerlinck was an All-Conference selection and went on to become an All-American for the Western Illinois University (Macomb, IL) Leathernecks. “We used to get New York Giants games at Western and I’d watch No. 89, Fred Dryer, and copy his moves,” Teerlinck told Chicago Tribune writer Don Pierson in a 1992 article.

When he wasn’t playing football in college, Teerlinck was studying the moves of New York Giants’ 6’6” 240-lb. DE Fred Dryer on TV.

A member of Western Illinois University’s Hall of Fame (inducted in 2000), Teerlinck was a team co-captain and defensive MVP as a senior in 1973. He was the first WIU player ever to record four sacks in a single game and still remains one of only four Leathernecks to ever accomplish that feat.

Teaching the Art of the Sack

In 1974 he was drafted by the San Diego Chargers (fifth round, 101st overall pick) and started as a rookie. Teerlinck played four seasons, on the other side of ball from an offense led by future Pro Hall of Fame QB Dan Fouts, until a severe knee injury led to his early retirement as a player. “When I played for the Chargers, I’d get updates on Fenwick and Chicago three to four times a year from referee Jerry Markbreit, who coached in the Catholic League,” Teerlinck said. (Markbreit is a fellow CCL Hall of Famer.)

50 years ago: John Teerlinck’s 1969 yearbook photo from Fenwick.

Some of football’s best quarterbacks feared many of the defensive linemen who trained under Teerlinck’s tutelage during nearly four decades spent coaching college and pro football. With four pro teams – the Cleveland Browns, Minnesota Vikings, Broncos and Colts — his players either set the record or came in second in total sacks.

Coach Teerlinck, who now is retired and recently celebrated his 68th birthday, stands 6’5” but many of his star speed rushers over the years were not quite as tall (see below). He coached 31 Pro Bowl (All-Star) players, including four defensive MVPs:

Perry

Michael Dean Perry, AFC Defensive Player of the Year (’89), Cleveland Browns. Out of Clemson, the Fridge’s younger, “little” brother, who is 6’1” and weighed 285 pounds, tallied 61 career sacks.

Doleman

Chris Doleman, NFC Defensive POY (’92), Minnesota Vikings. At 6’5” 290 lbs., he was a tall one. Doleman played collegiately at Pittsburgh, then registered 150.5 sacks during his NFL career.

Randle

John Randle, Minnesota Vikings; NFL sack leader in ’97; 137.5 career sacks. Randle stood only 6’1” and struggled to get his weight up to 275 lbs. College(s): Trinity Valley Community College and Texas A&M University – Kingsville (Div. II).

Freeney

Dwight Freeney, Indianapolis Colts; 125.5 career sacks and a “patented” spin move. At 6’1” 270 lbs., he sprinted 120 feet in 4.48 seconds at the NFL Combine in 2002. The freakish athlete also could leap up to 40 inches vertically. College: Syracuse. (Freeney was a four-sport athlete in high school, playing football, basketball, baseball and soccer!)

During his tenure, Teerlinck coached seven players (Bubba Baker, Doleman, Freeney, Kevin Greene, Robert Mathis, Randle and Neil Smith) to reach 100 career sacks: the ultimate benchmark for a defensive lineman. Both Doleman and Randle have been enshrined in the Pro Football Hall of Fame (HOF). Teerlinck became only the ninth assistant coach selected to present a player at a HOF induction when he presented Randle in 2010

Motivational Coach

“Wax on, wax off, Daniel -san.”

His players remember their coach as an unconventional teacher who believed in their abilities and who also helped to motivate them to reach their potential. “John Teerlinck is kind of like Mr. Miyagi [the character in the ‘Karate Kid’ movies],” John Randle has said. “He’s very unorthodox: a different breed; rough around the edges. He tells you things that are funny, but they register if you just listen. That’s why he’s the guru.

The player and coach at Randle’s Pro Football HOF enshrinement nine years ago.

Here’s how Randle began his HOF acceptance speech in 2010: “First of all, I want to thank John Teerlinck for presenting me, motivating me, focusing me on the game that I love. I also want to say, John, thank you for saying I could excel and play in the National Football League, even though I wasn’t drafted, didn’t play for a major school. Also thank you for showing me what sometimes I didn’t see in myself.”

VIDEO: Coach Teerlinck shares his memories of DL John Randle.

A Proud Friar

Before coaching in college and the pros, however, Teerlinck was just proud to be a Fenwick Friar. “Going to Fenwick was a big deal,” he recalled last week from his home in Indiana. Literally thousands of boys would take the admissions test in those days, he said. “Only three of nine [boys] from my school got in,” remembers the straight-A student from St. Louise de Marillac. “About 150 guys would try out for football in those days.” Youthful John is pictured among the 47 new Friars in his freshman Blackfriars yearbook (1965-66) photograph. (The team finished 3-2-1.)

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