design and operational requirement

operational requirement (OR)

tentative specific operational requirement

operational design and analysis

off-design / off design

design thrust / design rated thrust

blended-wing design (blended wing/body design)

design operational capability

operational design

operational design group

systems operational design

defense requirement review (DRR)

Equipment Requirement Plan (ERP)

information requirement (IR)

material requirement list

military assistance requirement

military requirement

principal military requirement (PMR)

service requirement

standardization requirement

local requirement

Statement of Requirement (SOR)

requirement

meet a requirement

age-in-grade requirement

M-day materiel-requirement

readiness requirement

computer-aided design and drafting (CADD)

aircraft noise and design effects study (ANDES)

design and production defect

observation and fields of fire, avenues of approach, key and decisive terrain,obstacles, and cover and concealment (OAKOC)

operational and tactical calculations

operational command and control