在项目开发过程中,CDR评审 (Critical Design Review) 和 PDR评审 (Preliminary Design Review) 是两个至关重要的阶段性评审,它们分别对项目设计不同阶段的成熟度进行评估,确保项目最终能够满足预期的需求和目标。两者虽然都属于设计评审,但评审的侧重点和深度有所不同。本文将深入探讨CDR评审和PDR评审的区别与联系,并...
A Preliminary Design Review (PDR) is conducted to ensure new technologies are mature enough to be integrated into a product subsystem to form its allocated baseline and is required by statute for allMajor Defense Acquisition Programs (MDAPs). ACritical Design Review (CDR)determines if a system ca...
4.设计定型(CDR-Critical Design Review)阶段:在这个阶段,研究者将优化的燃烧室设计进行试制,进行系统参数调整,以满足民用飞机低污染性能要求。 5.实施评估(QAR-Qualification Acceptance Review)阶段:在这个阶段,研究者将对燃烧室性能进行实际飞行测试,并对其可靠性和安全性进行评估,以确保燃烧室设计满足民用飞机低污染...
has completed a combined preliminary design (PDR) and critical design review (CDR) for the U.S. Air Force's next-generation command and control system for strategic nuclear forces. The combined design reviews for the Fam...
五大设计评审：要求评审（RR）、初步设计评审（PDR）、中期设计评审（IDR）、关键设计评审（CDR）、量产准备评审（PRR）。评审时间点和开发阶段对应，一般在设计阶段的完成是对设计工作的一个汇总、检讨和决定后续行动计划。第二：不同项目类型，需要做的设计评审数量不同。我们知道，项目有全新设计产品，也有现有产品...
Raytheon plans antenna PDR and CDR in 2015Raytheon's next-generation Cooperative Engagement Capability (CEC) Data Distribution Systems (DDS) Common Array Block-Surface (CAB-S) antenna will enter into preliminary design review (PDR) in the second quarter of fiscal year (FY) 2015. The CAB-S ...
摘要: The article reports that Boeing Co. has completed a combined preliminary design (PDR) and critical design review (CDR) for the U.S. Air Force's next-generation command and control system for strategic nuclear forces. The combined design reviews for the Family of Beyond Line-of-Sight ...
Feed & Front End PDR—Sys. Reqts Beam Beam illumination: Illumination centroid to be within 10 cm of the antenna center. Beam Similarity: Power gain variations between antennas to vary less than 1% of the peak, within the inner 6 dB of the primary beam. Paul Lilie Feed & Front End PDR...
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