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Risk of Hydrazine Use Following Freeze–Thaw Exposure

For more information, contact Jonathan E. Jones, Langley Research Center, jonathan.e.jones@nasa.gov Download the PDF version The purpose of this Technical Bulletin is to communicate the risks associated with freeze–thaw cycles in hydrazine monopropellant systems and to provide general recommendations for mitigating damage, operational…

Risk of Hydrazine Use Following Freeze–Thaw Exposure

For more information, contact Jonathan E. Jones, Langley Research Center, jonathan.e.jones@nasa.gov Download the PDF version The purpose of this Technical Bulletin is to communicate the risks associated with freeze–thaw cycles in hydrazine monopropellant systems and to provide general recommendations for mitigating damage, operational…

Can you have a heart attack and not know it?

When some people think of a heart attack, they picture sudden, crushing chest pain and an ambulance trip to the emergency room. But not all heart attacks are so obvious. Some occur with mild or unusual symptoms, or no symptoms at all, leaving people unaware that damage has occurred.

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