New, lightweight ceramics will further reduce the need for metals in aircraft, says Joy DE Lisser, vice-president of ATK Aerospace Structures, the division developing them.
Alliant Techsystems Inc. (ATK) will create a virtual space environment that will be used to test space hardware for the Defense Department under a ＄26.1 million contract.
根据一份价值2610万美元的合同，爱莲特技术系统公司（ATK）将为美国国防部创造出一个虚拟的太空环境，用于空间系统硬件的试验。
