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Aeronautical Design Standard, United States Army Aviation and Missile Command - Rotorcraft Propulsion Performance and Qualification Requirements and Guidelines

1.1 This ADS establishes the performance and verification which constitute
qualification requirements for rotorcraft propulsion systems. For the purposes of
this ADS, propulsion systems includes engine and auxiliary power unit installations,
start, fire detection/extinguishing, drive, fuel, environmental control, and hydraulic
systems.

1.2 The requirements for each system are stated in paragraph 1 of each Section
and are in bold and larger letters to distinguish them from the guidelines
paragraphs.

1.3 The performance guidelines for each propulsion system are addressed in paragraphs
3.0 within each section herein. These performance criteria are intended to be
performance guidelines that reflect accepted industry design practices and incorporate
lessons learned from prior programs to achieve safety and durability and minimize
operating and support costs of fielded systems. Should the contractor elect to
utilize design/performance criteria other than those contained herein, the contractor
is expected to explain his design selection. The agreed to design criteria/parameters
will form the basis for the subsequent qualification test program. The qualification
test guidelines in paragraphs 4.0 of each section represent the framework for the
contractors test plans. The contractor is expected to address each of the
qualification guidelines or explain why a particular guideline is not applicable or
how it has been tailored to reflect the design configuration. The contractor may
submit data to demonstrate that a particular component can be qualified by similarity.
Successful completion of the qualification requirements will establish that the
systems/components meet the agreed to performance criteria and will thus be considered
qualified components, i.e. airworthy and specification compliant.

1.4 This ADS addresses the performance and verification which constitute
qualification of component, module, or assembly level hardware. Criteria for design
analysis, modeling, simulations, and test planning and reporting are covered in ADS—
9C, Propulsion System Technical Data. Aircraft level propulsion system ground and
flight testing requirements are addressed in ADS-1B, Rotorcraft Propulsion Systems
Airworthiness Qualification Requirements.