What does PD stand for?

Such a study provides preliminary design parameters and an estimate of construction costs to support the request for funding.

Chaplain Team: Government Accountability Office: Acquisition and Sourcing Management Phone: (202) 512-4859 Recommendations for Executive Action ---------- Recommendation: The new NASA Administrator should direct the Constellation program, or its successor, to develop a sound business case--supported by firm requirements, mature technologies, a preliminary design, a realistic cost estimate, and sufficient funding and time--before proceeding into implementation, and, if necessary, delay the preliminary design review until a sound business case demonstrating the program's readiness to move forward into implementation is in hand.

Byline: ANI Washington, Sept 2 (ANI): NASA's Orion spacecraft has passed a significant design milestone by completing the Orion Project's preliminary design review (PDR), and thus taking a major step toward building the next crew exploration vehicle.

We have submitted our preliminary designs and have already received initial approval from Nakheel.

Looking to use technology to help tackle future regional mobility issues, the Port Authority Board of Commissioners has authorized a planning study and preliminary design work to explore the feasibility of implementing an all-electronic toll collection system at its bistate crossings.

In a report to Congress, the General Accountability Office said the scheduled September date for picking a builder for the Crew Exploration Vehicle will occur well before the agency has a preliminary design and firmer cost estimates.

Boeing and the US Navy held a preliminary design review of the new P-8A Multi-mission Maritime Aircraft (MMA) programme in a five-day session that covered the architecture and initial aircraft design.

The images show preliminary designs and have yet to be approved.