Cooling from Aggreko for Ares Five-Segment Solid Rocket Motor Test

Aggreko Cooling Strategies Used in Ares Five-Segment Solid Rocket Motor Test

Engineered Solution Provides Unique Low Temperature Application for ATK and NASA

Houston (August 31, 2010) – Aggreko, the global leader in rental power, cooling, heating and oil-free compressed air, today announced it is working with Alliant Techsystems (ATK) to test Development Motor-2 (DM-2), NASA’s second fully-developed Ares five-segment solid rocket motor. Aggreko’s low temperature chillers were used to execute the DM-2 “cold motor” test – supporting ATK’s objective to meet NASA’s specification to cool the motor to 40°F to measure solid rocket motor performance at low temperature and verify design requirements of new materials.

The temperature of DM-2 was controlled by the atmospheric conditions within the removable building housing the test motor. To achieve this scope of work in a controlled and repeatable manner, Aggreko process engineers and temperature control experts used specialized temporary utility equipment to cool the structure to target temperatures of 20°F.  Aggreko’s engineered solution for the cold motor test consisted of temporary generators to power the system of low temperature chillers; specially designed low temperature air handlers; a customized air conditioning duct system; and a suite of temperature control and electrical distribution equipment.

“This project was unique due to its many special requirements,” said Steven Bukoski, project manager for Aggreko Process Services, a process engineering group within Aggreko. “Aggreko’s specialized, large-capacity portable equipment and skilled technicians were critical factors in successfully achieving freezing temperatures under challenging environmental conditions, such as hot summer temperatures, cooling 1.6 million pounds of propellant, and working with a movable structure.”

Aggreko designed a first-of-its-kind low temperature air handler configuration to manage climate control for the mobile building:  three stacks of two air handler units with a custom-made defrost unit.  One of the air handlers drew air from inside the building, cooled it to 20°F, then recycled into the building while the remaining unit was on standby or defrost mode, enabling continuous cooling of air.  A seventh air handler was installed to provide fresh air and positively pressurize the mobile building to eliminate infiltration of warm, moist air.

“Reliable equipment and working closely with ATK on all critical issues enabled our team to meet NASA’s temperature cooling requirement and support  this important milestone for NASA’s space flight program,” said Bukoski.

Prior to the live test, Aggreko detached equipment from the building, and the structure was rolled away.  Aggreko continued to cool the rocket motor section joints with a custom air conditioning duct system up to an hour before the rocket was fired.

Editor's Notes

Aggreko plc is the world leader in the supply of temporary power and temperature control solutions. Aggreko employs over 4,000 people operating from over 133 locations. In 2008 we served customers in over 100 countries, and had revenues of approximately £950m (USD $1.6bn or Euros €1.1bn). Aggreko plc is listed on the London Stock Exchange (AGK.L), is a member of the FTSE-100 index, and is headquartered in Scotland. For more information, please visit the company website at

Aggreko provides power and temperature control solutions to customers who need them either very quickly, or for a short or indeterminate length of time. Examples would be the supply of power to an industrial site which needs to service its permanent power supply, supplying a whole city in times of power shortage, or providing a major sporting event with power and cooling systems. We serve our customers either through 120 service centres, which we call the Local Business, or globally through our International Power Projects business.

In the Local business, which accounts for about 60% of our revenues, we hire our equipment to customers, who then operate it for themselves, although we retain responsibility for servicing and maintaining it. In the International Power Projects business, which accounts for about 40% of revenues, we operate as a power producer. We install and operate power plants and we charge our customers both for providing the generating capacity, and for the electricity we produce. We design and manufacture equipment specifically for these requirements in our factory in Dumbarton, Scotland.

Recent customers include the Beijing 2008 Olympic Games, the Vancouver 2010 Olympic Winter Games and the power utilities in over 50 countries including the UK, France, Angola, Kenya, Indonesia, Bangladesh, Venezuela, Chile, Brazil and the USA.

For more information, please visit the company website at or

For more information, contact:

Shanta Mauney or Claire Caton, Ward Creative Communications    
Tel: 713-869-0707
E-mail: or  

Amy Stine, Communications Specialist, Aggreko LLC
Tel: 281-985-8266

Simon Lyons, Global Director of Marketing & Communication, Aggreko Plc
Tel: + 44 141 2255900



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