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Lew Allen

Lew Allen is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Lew Allen rather than just read about it. In short: Lew Allen Jr. (30 September 1925 – 4 January 2010) was a United States Air Force four-star general who served as the tenth Chief of Staff of the United States Air Force.

Lew Allen — main illustration
Lew Allen — illustration

Key takeaways

  • Lew Allen belongs to physics; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Lew Allen to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Lew Allen from memory before moving on to harder problems.

Reference excerpt

Lew Allen Jr. (30 September 1925 – 4 January 2010) was a United States Air Force four-star general who served as the tenth Chief of Staff of the United States Air Force. As chief of staff, Allen served as the senior uniformed Air Force officer responsible for the organization, training, and equipping of 750,000 active duty Air Force, Air National Guard, Air Force Reserve, and civilian personnel serving in the United States and overseas. As a member of the Joint Chiefs of Staff, he and the other service chiefs were the military advisers to the Secretary of Defense, the National Security Council, and the president.

Early life and education

Born in Miami, Florida, Allen attended and graduated from high school in Gainesville, Texas, in 1942. He entered the United States Military Academy, in 1943, and he graduated in 1946 with a Bachelor of Science degree and a commission as a second lieutenant. He was awarded his pilot's wings upon his graduation from flight training.

Military career

After completing multi-engine flight training in November 1946, Allen was assigned to Strategic Air Command's 7th Bombardment Group at Carswell Air Force Base, Texas, where he flew B-29 Superfortress bombers, and then the new and very long-range Convair B-36 bomber. Allen also served in various technical positions in the area of nuclear weapons. Allen also attended the Air Tactical Course at Tyndall Air Force Base, Florida, and next he returned to Carswell Air Force Base as a flight instructor and as an assistant Special Weapons Officer for the 7th Bombardment Wing. In September 1950, Allen entered the University of Illinois for graduate study in nuclear physics. He completed his Master of Science degree in 1952. Allen continued his graduate study, and he earned his PhD in physics in 1954 under the direction of Alfred O. Hanson. He had completed an experimental thesis on high-energy photonuclear reactions. Allen then was assigned to the U.S. Atomic Energy Commission's Los Alamos Scientific Laboratory in Los Alamos, New Mexico, as a physicist in the Test Division, where he became acquainted with the bomb designer Ted Taylor. Allen conducted experiments in several different nuclear test series. These experiments concerned the physics of thermonuclear weapons design and to the effects of high altitude nuclear explosions conceivably to be used for ballistic missile defense. From June 1957 to December 1961, Allen was assigned to Kirtland Air Force Base, New Mexico, as the science adviser to the Physics Division of the Air Force Special Weapons Center. ("Special weapons" is a euphemism for nuclear and thermonuclear bombs.) Allen specialized in the military effects of high altitude nuclear explosions and participated in several nuclear weapons test series. He was scientific director of a major experiment that utilized a large series of high-altitude rockets to measure the characteristics of electrons trapped in the geomagnetic field after an exoatmospheric nuclear burst. Allen was assigned in December 1961 to the Office of the Secretary of Defense, Space Technology Office, in the Directorate of Research and Engineering, Washington, D.C. From June 1965 to February 1973, he was assigned to the Office of the Secretary of the Air Force, initially in Los Angeles, California, as the deputy director for advanced plans in the Directorate of Special Projects. Allen next moved to The Pentagon in June 1968 as the deputy director of space systems, and in June 1969, he became the director. He returned to Los Angeles in September 1970 as the assistant to the director of special projects and in April 1971 became the director of special projects, with additional duty as the deputy commander for satellite programs of the Space and Missile Systems Organization. After serving briefly as the chief of staff for the Air Force Systems Command at Andrews Air Force Base, Maryland, Allen was appointed in March 1973 as a deputy to the Director of Central Intelligence for the Intelligence Community in Washington, D.C. In August 1973, Allen became the director of the National Security Agency (NSA) and the chief of the Central Security Service at Fort George G. Meade, Maryland. Allen's tenure as the NSA director was noteworthy in that he became the first director to ever testify publicly before Congress. In August 1977, he was named commander of Air Force Systems Command. Allen served as the Vice Chief of Staff of the United States Air Force from April 1978 until he became the Chief of Staff of the Air Force in July 1978. His nomination was unusual in that he had never served in an overseas or combat assignment, and most of his positions were in specialized technical activities, rather than in the usual command structure of the Air Force. Also, he was the last chief of staff with a bomber background; all subsequent chiefs of staff except General Norton Schwartz have been fighter pilots, and this trend is reflected by the Service's weapon budgets, which devote most funding to fighters rather than bombers.

Retirement Allen did not believe that crewed spaceflight was useful. He reportedly told a manned spaceflight engineer that he had helped cancel Manned Orbiting Laboratory in the 1960s, and would have canceled the Space Shuttle program. Following his retirement from the Air Force in 1982, Allen became the director of the Jet Propulsion Laboratory (JPL), during part of the Voyager Program (space probes launched in 1977), and he served as the director of the JPL until 1990. Allen was a member of the National Academy of Engineering and the Council on Foreign Relations. From 1993 to 1995, Allen served as a member of the President's Foreign Intelligence Advisory Board (PFIAB) and the Intelligence Oversight Board. Allen was awarded the 1999 Distinguished Graduate Award of the Association of Graduates, the alumni association of West Point graduates. Allen died in Potomac Falls, Virginia, on 4 January 2010, of complications from rheumatoid arthritis. He was buried at Arlington National Cemetery on March 22, 2010.

… excerpt ends here. Continue reading the full article.

Illustrations

Lew Allen illustration
Lew Allen: Allen as a United States Military Academy cadet c. 1946
Allen as a United States Military Academy cadet c. 1946
Lew Allen illustration

Worked examples

Example 1 — a first encounter with Lew Allen

Start with the simplest possible case. Write down what Lew Allen claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Lew Allen before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Lew Allen ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Lew Allen

In research
Lew Allen appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Lew Allen in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Lew Allen is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1925 births, 2010 deaths, Burials at Arlington National Cemetery, so understanding it makes those chapters shorter.
In everyday life
Look for Lew Allen outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Lew Allen in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Lew Allen means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Lew Allen out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Lew Allen in simple terms?

Lew Allen Jr. (30 September 1925 – 4 January 2010) was a United States Air Force four-star general who served as the tenth Chief of Staff of the United States Air Force.

Why does Lew Allen matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Lew Allen?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Lew Allen.

Tags

  • 1925 births
  • 2010 deaths
  • Burials at Arlington National Cemetery
  • Chiefs of staff of the United States Air Force
  • Deaths from arthritis
  • Directors of the National Security Agency
  • Grainger College of Engineering alumni
  • Human spaceflight opponents
  • Military personnel from Texas
  • People from Gainesville, Texas
  • Recipients of the Air Force Distinguished Service Medal
  • Recipients of the Defense Distinguished Service Medal

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