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Related Concept Videos

Accelerators01:17

Accelerators

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Accelerators in concrete serve as admixtures to speed up the hardening process, enabling the concrete to achieve early strength faster. Although accelerators do not necessarily impact the time it takes concrete to set, they reduce this time in practice. A common accelerator is calcium chloride, which is particularly useful for hastening early strength development in cold weather or for rapid repair jobs that require quick heat generation after mixing.
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The scientific method provides the foundation for any research. It is the most reliable and objective of all forms of gaining knowledge and guides in applying research-based evidence in practice and conducting future research.
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Average Acceleration01:30

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The importance of understanding acceleration spans our day-to-day experiences, as well as the vast reaches of outer space and the tiny world of subatomic physics. In everyday conversation, to accelerate means to speed up. For instance, we are familiar with the acceleration of our car; the harder we apply our foot to the gas pedal, the faster we accelerate. The greater the acceleration, the greater the change in velocity over a given time. Acceleration is widely seen in experimental physics. In...
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Instantaneous Acceleration

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Acceleration is in the direction of the change in velocity, but it is not always in the direction of motion. When an object slows down, its acceleration is opposite to the direction of its motion. Although commonly referred to as deceleration, this causes confusion in our analysis as deceleration is not a vector, and does not point to a specific direction with respect to a coordinate system. Therefore, the term deceleration is not used. For example, when a subway train slows down, it...
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Acceleration Vectors01:30

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In everyday conversation, accelerating means speeding up. Acceleration is a vector in the same direction as the change in velocity, Δv, therefore the greater the acceleration, the greater the change in velocity over a given time. Since velocity is a vector, it can change in magnitude, direction, or both. Thus acceleration is a change in speed or direction, or both. For example, if a runner traveling at 10 km/h due east slows to a stop, reverses direction, and continues their run at 10 km/h...
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When a fluid is in constant acceleration, the pressure and buoyant force equations are modified. Suppose a beaker is placed in an elevator accelerating upward with a constant acceleration, a. In the beaker, assume there is a thin cylinder of height h with an infinitesimal cross-sectional area, ΔS.
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A Simple Flight Mill for the Study of Tethered Flight in Insects
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Acceleration profiles and processing methods for parabolic flight.

Christopher E Carr1,2, Noelle C Bryan1, Kendall N Saboda1

  • 11Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA USA.

NPJ Microgravity
|August 16, 2018
PubMed
Summary
This summary is machine-generated.

Parabolic flights offer affordable access to reduced gravity for research. This study presents an open-source method for analyzing flight data, enabling better planning for future space missions.

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Area of Science:

  • Aerospace Engineering
  • Physics
  • Space Research

Background:

  • Parabolic flights provide crucial, cost-effective access to reduced gravity environments for research and validation.
  • Despite decades of use, standardized methods for analyzing parabolic flight acceleration data are lacking.
  • This gap hinders efficient planning and execution of microgravity experiments.

Purpose of the Study:

  • To develop and validate an open-source solution for collecting, analyzing, and classifying altered gravity environments during parabolic flights.
  • To provide a consistent and accessible method for quantifying gravito-inertial accelerations (GIA).
  • To support the growing needs of academic, governmental, and commercial space exploration.

Main Methods:

  • A Boeing 727-200F aircraft was utilized for data collection across 20 parabolic maneuvers.
  • A novel data processing pipeline was implemented for analyzing recorded acceleration data.
  • Unsupervised machine learning techniques were employed for classifying flight phases and GIA levels.

Main Results:

  • The developed solution successfully collected and analyzed GIA data during parabolic flights.
  • The method demonstrated unsupervised classification of all flight phases, independent of accelerometer orientation.
  • All data and analysis code were made freely available to the research community.

Conclusions:

  • The presented open-source approach offers a validated, consistent method for quantifying GIA during parabolic flights.
  • Availability of such tools and data is essential for optimizing parabolic flight experiments.
  • This facilitates better planning and execution of research supporting future space activities.