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Lehigh University Lehigh University (LU) is a private research university in Bethlehem, Pennsylvania in the Lehigh Valley region of eastern Pennsylvania. The university was established in 1865 by businessman Asa Packer and was originally affiliated with the Epi ...
students, faculty and alumni have made significant contributions to the nation and the field of engineering, not limited to but including:


''Columbia'' Space Shuttle forensics

Following the 2003 ''Columbia'' Space Shuttle disaster,
NASA The National Aeronautics and Space Administration (NASA ) is an independent agencies of the United States government, independent agency of the US federal government responsible for the civil List of government space agencies, space program ...
asked Lehigh exclusively to assist in the analysis of debris. Students of the Materials Science and Engineering department then reported findings of the
forensic Forensic science, also known as criminalistics, is the application of science to criminal and civil laws, mainly—on the criminal side—during criminal investigation, as governed by the legal standards of admissible evidence and criminal p ...
analysis during a two-day joint Lehigh-NASA symposium. This became part of their senior project, a requirement for graduation. Lehigh was the first university to investigate the debris due to its advanced microscope technology.


The escalator

Jesse W. Reno, an 1883 engineering graduate of
Lehigh University Lehigh University (LU) is a private research university in Bethlehem, Pennsylvania in the Lehigh Valley region of eastern Pennsylvania. The university was established in 1865 by businessman Asa Packer and was originally affiliated with the Epi ...
invented the first
escalator An escalator is a moving staircase which carries people between floors of a building or structure. It consists of a motor-driven chain of individually linked steps on a track which cycle on a pair of tracks which keep the step tread horizo ...
and installed it as an amusement ride at Coney Island, New York in 1897. This particular device was an inclined belt with wooden slats or cleats on the surface for traction. The incline was as steep as 25°. Reno sold this machine to the
Otis Elevator Company Otis Worldwide Corporation ( branded as the Otis Elevator Company, its former legal name) is an American company that develops, manufactures and markets elevators, escalators, moving walkways, and related equipment. Based in Farmington, Connec ...
in 1899, and together they produced the first commercial escalator. This escalator won a first prize at the
Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), ma ...
1900 Exposition Universelle in
France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan area ...
. Some escalators of this vintage were still being used in the
Boston subway The Massachusetts Bay Transportation Authority (MBTA) operates rapid transit (heavy rail), light rail, and bus rapid transit services in the Boston metropolitan area, collectively referred to as the rapid transit, subway, or the T system. The co ...
until 1994.


First commercial product manufactured in space

The first commercial product manufactured in space were microscopic polystyrene beads, 10 µm in diameter, that were made during STS-6 aboard the Space Shuttle ''Challenger'' April 4–9, 1983. The beads were made to be used for the calibration of particle size measuring instruments such as optical and electron microscopes. The manufacturing process took advantage of being able to form near perfect spheres in a microgravity environment. The technology necessary to produce the beads was jointly developed by
Lehigh University Lehigh University (LU) is a private research university in Bethlehem, Pennsylvania in the Lehigh Valley region of eastern Pennsylvania. The university was established in 1865 by businessman Asa Packer and was originally affiliated with the Epi ...
and
NASA The National Aeronautics and Space Administration (NASA ) is an independent agencies of the United States government, independent agency of the US federal government responsible for the civil List of government space agencies, space program ...
.


Ford Mustang

The legendary Ford Mustang, the first of the "pony" cars, was developed and introduced in 1964 under the guidance of Lee Iacocca (Lehigh Class of 1946), former general manager of
Ford Motor Company Ford Motor Company (commonly known as Ford) is an American multinational automobile manufacturer headquartered in Dearborn, Michigan, United States. It was founded by Henry Ford and incorporated on June 16, 1903. The company sells automobi ...
's Ford Division. Still in production, the Mustang combined fun, performance and styling at a low price and had the most successful first year sales of any automobile. In its first two years of production, three Ford Motor Company plants produced nearly 1.5 million Mustangs, a record unequaled before or since.


Golden Gate Bridge

Originally designed by Joseph Strauss, the Golden Gate Bridge construction project was carried out by the McClintic-Marshall Construction Co., founded by Howard H. McClintic and Charles D. Marshall, both of the Lehigh Class of 1888. The project was completed in 1937 in San Francisco Bay. Today the bridge is recognized as one of the "Seven Wonders of the Modern Worl

McClintic-Marshall, (later becoming the Fabricated Steel Construction Division of the
Bethlehem Steel Corporation The Bethlehem Steel Corporation was an American steelmaking company headquartered in Bethlehem, Pennsylvania. For most of the 20th century, it was one of the world's largest steel producing and shipbuilding companies. At the height of its succ ...
), built numerous other bridges, including
Detroit Detroit ( , ; , ) is the largest city in the U.S. state of Michigan. It is also the largest U.S. city on the United States–Canada border, and the seat of government of Wayne County. The City of Detroit had a population of 639,111 at t ...
's
Ambassador Bridge The Ambassador Bridge is a tolled international suspension bridge across the Detroit River that connects Detroit, Michigan, United States, with Windsor, Ontario, Canada. Opened in 1929, it is the busiest international border crossing in North ...
and
New York City New York, often called New York City or NYC, is the most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the most densely populated major city in the Un ...
's
George Washington Bridge The George Washington Bridge is a double-decked suspension bridge spanning the Hudson River, connecting Fort Lee, New Jersey, with Manhattan in New York City. The bridge is named after George Washington, the first president of the United S ...
. Other construction projects included the Waldorf Astoria Hotel and the
Panama Canal The Panama Canal ( es, Canal de Panamá, link=no) is an artificial waterway in Panama that connects the Atlantic Ocean with the Pacific Ocean and divides North and South America. The canal cuts across the Isthmus of Panama and is a condui ...
.


Landing Ship Tank

A critical factor for the Allied victory in
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing ...
was the rapid development and production of the Landing Ship Tank ( LST). A cargo ship with an opening bow capable of beaching itself, it enabled armored support of landings without the need to capture a port. This greatly increased the choice of invasion locations and made defense against the landings more difficult. The Dravo Corporation, founded by brothers Francis Dravo (Lehigh Class of 1887) and Ralph Dravo (Lehigh Class of 1889), was the lead yard responsible for the LST shipbuilding progra

and produced hundreds of them for use in the Allied landings in Operation Overlord, Normandy and the
Pacific The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the contine ...
. Dravo Brothers also built
Destroyer Escorts Destroyer escort (DE) was the United States Navy mid-20th-century classification for a warship designed with the endurance necessary to escort mid-ocean convoys of merchant marine ships. Development of the destroyer escort was promoted by th ...
for the Battle of the Atlantic and many of the
tugboat A tugboat or tug is a marine vessel that manoeuvres other vessels by pushing or pulling them, with direct contact or a tow line. These boats typically tug ships in circumstances where they cannot or should not move under their own power, su ...
s used in American harbors.


Packard V-12 engine

The Packard V-12, a product of the Packard Motor Company that was co-founded by
James Ward Packard James Ward Packard (November 5, 1863 – March 20, 1928) was an American automobile manufacturer who founded the Packard Motor Car Company and Packard Electric Company with his brother William Doud Packard.Adler, Dennis (2004). ''Packard''. Mo ...
(Lehigh Class of 1884), was one of the most powerful inline aircraft engines ever manufactured. The 4M-2500 version produced and was essential to the success of US Navy
PT Boat A PT boat (short for patrol torpedo boat) was a motor torpedo boat used by the United States Navy in World War II. It was small, fast, and inexpensive to build, valued for its maneuverability and speed but hampered at the beginning of the war ...
s in World War II, which were each powered by three of them. James Ward Packard introduced many advances to the internal combustion engine, including the first automatic spark timing advance, allowing an engine to produce more power at higher RPM's and still in use today.


P-51 Mustang

One of the most famous fighter aircraft of all time, the P-51 Mustang was the key to gaining
air supremacy Aerial supremacy (also air superiority) is the degree to which a side in a conflict holds control of air power over opposing forces. There are levels of control of the air in aerial warfare. Control of the air is the aerial equivalent of comm ...
over Europe in
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing ...
, tripling the kill ratio over Luftwaffe fighters within 3 weeks of its introduction to combat. Initially underpowered with an Allison V-1710 engine, it rapidly achieved dominance when powered by the Packard V-1650 engine made under license from
Rolls-Royce Rolls-Royce (always hyphenated) may refer to: * Rolls-Royce Limited, a British manufacturer of cars and later aero engines, founded in 1906, now defunct Automobiles * Rolls-Royce Motor Cars, the current car manufacturing company incorporated in ...
. The mass-produced Packard Motor Company (co-founded by James Ward Packard, Lehigh Class of 1884) version of the Merlin was actually found by
Rolls-Royce Rolls-Royce (always hyphenated) may refer to: * Rolls-Royce Limited, a British manufacturer of cars and later aero engines, founded in 1906, now defunct Automobiles * Rolls-Royce Motor Cars, the current car manufacturing company incorporated in ...
to be superior to its own handmade version, and the Packard version powered most P-51s. Packard also made improvements to increase the maintainability of the engine, which were subsequently adopted by Rolls-Royce in its own versions.


Panama Canal

Two firms founded by Lehigh graduates were instrumental in the construction of the
Panama Canal The Panama Canal ( es, Canal de Panamá, link=no) is an artificial waterway in Panama that connects the Atlantic Ocean with the Pacific Ocean and divides North and South America. The canal cuts across the Isthmus of Panama and is a condui ...
. The McClintic-Marshall Construction Company constructed the locks and the Dravo Corporation manufactured the enormous lock gates. The gates were uniquely engineered to float and have adjustable buoyancy. This allowed them to be made in the U.S., towed like a barge to
Panama Panama ( , ; es, link=no, Panamá ), officially the Republic of Panama ( es, República de Panamá), is a transcontinental country spanning the southern part of North America and the northern part of South America. It is bordered by Co ...
, and minimized the force needed to open and close them. The Panama Canal is recognized as one of the "Seven Wonders of the Modern World


Penske PC-23 Indianapolis Race Car

The
Penske PC-23 The Penske PC-23 was a highly successful CART racing car that competed in the 1994 IndyCar season with Penske Racing, and in the 1995 IndyCar season with Bettenhausen Motorsports. It was designed by Nigel Bennett, who based its design on the ...
, developed by
Roger Penske Roger Searle Penske (born February 20, 1937) is an American businessman and entrepreneur involved in professional auto racing and a retired professional auto racing driver. He is most famous for his ownership of Team Penske, DJR Team Penske, t ...
, Lehigh Class of 1959, was one of the most dominant open wheel race cars ever developed. In 1994, it won the
Indianapolis 500 The Indianapolis 500, formally known as the Indianapolis 500-Mile Race, and commonly called the Indy 500, is an annual automobile race held at Indianapolis Motor Speedway (IMS) in Speedway, Indiana, United States, an enclave suburb of Indi ...
and 12 out of 16 total races, collecting 10 pole positions and 28 podium finishes on the way to the CART championship. That season saw
Penske Racing Team Penske (formerly Penske Racing) is an American professional auto racing organization, competing in the NTT IndyCar Series, NASCAR Cup Series, and the FIA World Endurance Championship. Debuting at the 1966 24 Hours of Daytona, the organizati ...
simultaneously take the Driver's Championship with
Al Unser Jr. Alfred Unser Jr. (born April 19, 1962), nicknamed "Little Al", "Al Junior", or simply "Junior", is a retired American race car driver and two-time Indianapolis 500 winner. History Unser was born into a racing family in Albuquerque, New Mexico. ...
, the Constructor's Cup with the Penske PC-23, and the Manufacturer's Cup with the Ilmor-Mercedes-Benz engine. Competing since 1968,
Penske Racing Team Penske (formerly Penske Racing) is an American professional auto racing organization, competing in the NTT IndyCar Series, NASCAR Cup Series, and the FIA World Endurance Championship. Debuting at the 1966 24 Hours of Daytona, the organizati ...
has won 16 Indianapolis 500s, more than any other team.


RSA security key factorization

Lehigh University is home to Dr. Bruce Dodson, whose significant contributions to
cryptography Cryptography, or cryptology (from grc, , translit=kryptós "hidden, secret"; and ''graphein'', "to write", or ''-logia'', "study", respectively), is the practice and study of techniques for secure communication in the presence of adver ...
led to the factorization of RSA-140RSA-140 is Factored!
and RSA-155RSA-150 is Factored!
on an SGI Origin based supercomputer in 1999. By being able to derive the factors of the encryption keys, it was proven easier to break security schemes based on them. The factorization of RSA-155, a 512-bit key, led to the recommendation that commercial encryption of computer data be based on stronger 1024-bit keys.Factorization of RSA-155 - Frequently Asked Questions


Tau Beta Pi

Tau Beta Pi (ΤΒΠ), the highly regarded national
engineering Engineering is the use of scientific principles to design and build machines, structures, and other items, including bridges, tunnels, roads, vehicles, and buildings. The discipline of engineering encompasses a broad range of more speciali ...
honor society, was formed at Lehigh University in 1885 to recognize the accomplishments of those in the field of
engineering Engineering is the use of scientific principles to design and build machines, structures, and other items, including bridges, tunnels, roads, vehicles, and buildings. The discipline of engineering encompasses a broad range of more speciali ...
. The seal of Tau Beta Pi features brown and white, the colors of Lehigh. Lehigh's chapter was the first established and is known as the Pennsylvania Alpha.


References


External links


Lehigh University Engineering Heritage Wiki Site
{{Lehigh University Lehigh University Engineering universities and colleges in Pennsylvania