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NASA extends Pratt & Whitney Rocketdyne’s contract

NASA awarded a contract extension to Pratt & Whitney Rocketdyne, a United Technologies Corp. company. The extension will allow the company to continue development of the Common Extensible Cryogenic Engine (CECE), in an effort to support future lunar landing development.

Aqua Cure Ltd. awarded contract by US Air Force

Aqua Cure Ltd., Buffalo NY, has been awarded a $131,430 contract by the US Air Force for cryogenic vaporizers.

Hydrogen rocket technologies prepare for lift-off

An engine which is fueled by a mix of liquid oxygen and hydrogen has been developed to demonstrate advanced rocket technologies for future space vehicles, such as lunar vehicles, and has achieved a technical milestone in throttling capability.

Drell appointed acting director at SLAC

Persis Drell has been appointed acting director at the Stanford Linear Accelerator Center (SLAC); she was formerly deputy director. She succeeds Jonathan Dorfan who becomes assistant to the president, focusing on the relationship between Stanford University and SLAC.

Norman R. Augustine speaks at AAAS meeting

During the AAAS meeting held on February 18, 2008, Norman R. Augustine shared some challenging and interesting insight into the alarming state of science and technology research and education in the United States.

Tevatron sets a new record

The Tevatron set a new record on Monday, March 17, 2008 when it produced more particle collisions per second than ever before. Breaking the barrier of 3E32 for the first time, the Tevatron reached a record peak luminosity of 3.15 E32 cm^ -2 sec^ -1. The record came on the...

Latest in Defining Cryogenics

Transfer Lines

Transfer lines may in some real sense be thought of as the cryogenic fluid analogy of current leads. While current leads carry electrical power to where it’s required in a cryogenic system, transfer lines do the same with cryogenic fluids. Transfer lines range in complexity from very simple U-tubes containing...

Zero Boiloff

Zero Boil Off cryostats are those that contain liquid cryogens but are designed to eliminate or vastly reduce the boil off of the liquid. These cryostats combine some of the advantages of Cryogen-Free systems (e.g. ease of use and long operational lifetime) with the advantages associated with a reservoir of liquid...

Cryomodule

Cryomodule is a term that is most commonly used to refer to cryostats that contain superconducting radio frequency (SRF) cavities. Such cavities are used to accelerate charged particle beams and are a major component of modern particle accelerators. Using the term cryomodule to refer to cryostats containing SRF cavities appears...

Latest in Cryo Central

Cryogenic Treatment of Materials

F.J. Diekman Controlled Thermal Processing, Inc. info@metal-wear.com Cryogenic Processing (also called cryogenic treatment, and incorrectly “cryogenic tempering”) is a process that uses cryogenic temperatures to modify materials to enhance their performance. Cryogenic Processing involves the slow reduction in temperature of the material to at least -300°F (-185°C) and holding the...

Cryogenics in Space

Peter Kittel University of California-Berkeley pkittel@cal.berkeley.edu Space Cryogenics is the application of cryogenics to space missions. These applications fall into two broad areas, supporting space science missions and supporting the space transportation infrastructure. Science applications: The atmosphere is opaque to much of the electro-magnetic spectrum. In space, the absence of...

Cryosurgery

Review of Cryosurgery Boris Rubinsky, PhD Hebrew University School of Science and Engineering Research Center for Biomedical Engineering 78b Ross Building Givat Ram, Jerusalem 91904 Israel rubinsky@cs.huji.ac.il as published in Annual Review of Biomedical Engineering, August 2000, Vol. 2, pp. 157-187. Abstract: Cryosurgery is a surgical technique that employs freezing...

Liquefied Natural Gas

Liquefied Natural Gas as it relates to the Field of Cryogenics John W. Bonn VJ Systems, LLC johnbonn@vjsystems-lic.com Today the world is looking for a cleaner fuel and Liquefied Natural Gas (LNG) plays a large part in achieving this goal. LNG in a liquid form is at -162°C (-259°F) and...

Latest in Ask the Experts

An Issue of Pressure and Flow Rate in a Supply Tank

Please help solve this problem: A supply tank requires a vaporizer to generate sufficient pressure to pump stored fluid up into a vehicle or tank. The available head is limited as the tank level falls and it is important to minimize the system pressure drop to maintain the desired flow...

Using MLI on VJ Line Joints or Cryo Storage Tanks

When installing Multi Layer Insulation (MLI) blankets on VJ line joints or cryo storage tanks should they be wrapped and tied down tight or loose? These are usually pre-cut to size. Also should they have an access hole at the point of where the molecular sieve is installed to help...

Separated layers of ice over a pipe

I want to know that why there are different layers of ice over a pipe carrying a cryogenic fluid, each layer separated with clear marks / lines? What do these layers signify?

Using nitrogen as a cryogen

Is it possible to achieve -200˚C using nitrogen as a cryogen?

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