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Zero Gravity Research Facility

Zero Gravity Research Facility is a engineering 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 Zero Gravity Research Facility rather than just read about it. In short: The Zero Gravity Research Facility at the NASA Glenn Research Center, in Cleveland, Ohio, is a unique facility designed to perform tests in a reduced gravity environment. It has successfully supported research for United States crewed spacecraft programs and numerous uncrewed projects.

Zero Gravity Research Facility — main illustration
Zero Gravity Research Facility — illustration

Key takeaways

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

Reference excerpt

The Zero Gravity Research Facility at the NASA Glenn Research Center, in Cleveland, Ohio, is a unique facility designed to perform tests in a reduced gravity environment. It has successfully supported research for United States crewed spacecraft programs and numerous uncrewed projects. The facility uses vertical drop tests in a vacuum chamber to investigate the behavior of systems, components, liquids, gases, and combustion in microgravity. The facility consists of a concrete-lined shaft, 28 feet (8.5 m) in diameter, that extends 510 feet (160 m) below ground level. A steel vacuum chamber, 20 feet (6.1 m) in diameter and 470 feet (140 m) high, is contained within the concrete shaft. The pressure in this vacuum chamber is reduced to 13.3 pascals (1.3×10−4 atm) before use. Test equipment is typically mounted in a cylindrical container, and has a maximum weight of 2,500 pounds (1,100 kg). Equipment dropped in the chamber experiences microgravity for about 5.15 seconds before landing in a deceleration cart filled with expanded styrofoam beads; it typically experiences 32 g during deceleration, but may range up to 65 g. The service building at the top of the shaft contains a shop area, control room, and a clean room. Assembly, servicing, and balancing of the experiment vehicle are accomplished in the shop area. Tests are conducted from the control room, which contains controls for the "pump down" of the vacuum chamber, the experiment vehicle pre-drop checkout, release and the data retrieval system.

History The Zero Gravity Research Facility was built in 1966 as part of NASA's Centaur upper-stage rocket development program. In order to ensure proper firing and functioning of upper-stage rockets, NASA needed to understand the behavior of fluids (importantly, the liquid gases fueling the rockets), in the reduced gravity where they would fire. The facility was designated a National Historic Landmark in 1985 for its role in the early space program.

References

External links Media related to Zero Gravity Research Facility at Wikimedia Commons

Zero Gravity Research Facility

Illustrations

Zero Gravity Research Facility illustration

Worked examples

Example 1 — a first encounter with Zero Gravity Research Facility

Start with the simplest possible case. Write down what Zero Gravity Research Facility claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, 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 Zero Gravity Research Facility 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 Zero Gravity Research Facility 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 Zero Gravity Research Facility

In research
Zero Gravity Research Facility appears in engineering 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 Zero Gravity Research Facility 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
Zero Gravity Research Facility is common in secondary-school and first-year university syllabi. It links to neighbouring topics Buildings and structures completed in 1966, Buildings and structures in Cleveland, Glenn Research Center, so understanding it makes those chapters shorter.
In everyday life
Look for Zero Gravity Research Facility 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 Zero Gravity Research Facility in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Zero Gravity Research Facility 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 Zero Gravity Research Facility out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Zero Gravity Research Facility in simple terms?

The Zero Gravity Research Facility at the NASA Glenn Research Center, in Cleveland, Ohio, is a unique facility designed to perform tests in a reduced gravity environment. It has successfully supported research for United States crewed spacecraft programs and numerous uncrewed projects.

Why does Zero Gravity Research Facility matter?

Because it connects several engineering 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 Zero Gravity Research Facility?

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 Zero Gravity Research Facility.

Tags

  • Buildings and structures completed in 1966
  • Buildings and structures in Cleveland
  • Glenn Research Center
  • National Historic Landmarks in Ohio
  • National Register of Historic Places in Cleveland, Ohio
  • Weightlessness

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