Performance Specification Guide SD-15
refueling subsystem(s). This also includes employment of the refueling boom or drogue systems, or both, that may be deployed with the air vehicle during aerial refueling. Essentially, the verifications should be accomplished by integrating a series of analyses followed by simulations, tests, and demonstrations to verify the aerial refueling envelope.
Key Development Activities
Key development activities include, but are not limited to, the following:
SRR/SFR: Analysis of the air vehicle design concept indicates that comparative efforts will be conducted as a function of evolving the flight envelope as compared with the aerial refueling envelope. Analysis of the proposed aerial refueling envelope indicates that the aerial refueling envelope requirement could be met.
PDR: Analyses of the preliminary air vehicle design indicates that the required aerial refueling envelope is achievable and is compatible with the overall flight envelope requirement. Analysis defines those aerial refueling simulations that may be integrated with the overall flight envelope simulations. Analysis indicates any required modeling for aerial refueling wind tunnel testing has been determined.
CDR: Analysis of completed wind tunnel modeling tests and flight and aerial refueling simulations confirms the ability of the air vehicle to achieve the specified aerial refueling envelope.
FFR: No unique verification action occurs at this milestone.
SVR: Analysis, simulations, demonstrations, inspections, and tests confirm that the aerial refueling envelope has been successfully achieved and risks have been eliminated or are consistent with the specified requirements.
Sample Final Verification Criteria
The aerial refueling envelope shall be satisfied when (1) analyses, (2) simulations,
(3) demonstrations, and (4) tests of the air vehicle aerial refueling envelope and the subsequent (5) inspections confirm that the aerial refueling envelope requirements have been met.
Blank 1. Identify the type and scope of aerial refueling flight and ground analyses required to confirm that the air vehicle aerial refueling envelope has been met. Analyses should include, but are not limited to, aerodynamic and structural loading of the aerial refueling equipment and attachment structure throughout the specified airspeed and altitude. Tanker and receiver controllability analysis should be performed throughout the center of gravity (c.g.) and gross weight range. Receiver analyses should include one-engine-out refueling capability (when applicable), effect of the receiver's bow wave on the boom or drogue, and specific power of the engine(s) for closure rate and climb capability. Analyses with boom systems should include controllability of the boom while both connected and disconnected from the receiver, latch forces throughout the applicable range of temperatures and disconnect rates, latch and unlatch times,
and flutter analysis throughout the operational envelope. Hose and drogue systems should
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