DI-SESS-82254A

Aircraft Store Loads Design Criteria Report

This report describes the aircraft store loads criteria that will be used in the structural design of a store carried on an aircraft for all store variants.

Approval DateApril 8, 2024

AMSC NumberN10471

Preparing ActivityAS

Project NumberSESS-2024-005

OPR—

DTIC Applicable—

GIDEP ApplicableNo

LimitationNone

Applicable Forms—

Approval Limitation—

Form Version—

DID Formatfree_text

963C CompliantYes

DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.

Supersedes

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Description & Purpose

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Application & Interrelationship

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Use & Relationship

This report describes the aircraft store loads criteria that will be used in the structural design of a store carried on an aircraft for all store variants.

This Data Item Description (DID) contains the format, content, and intended use information for the data product resulting from the work task described by the contract SOW.

Preparation Instructions

1Reference documentsNone

2FormatContractor format acceptable.

3ContentThe Aircraft Store Loads Design Criteria Report shall:

3.1The following criteria & documentation requirements applyThe following criteria & documentation requirements apply to all store variants.

3.2Loads documentation for all store variants shall include

3.2.1All design weights as specified by the contract

3.2.2Center of gravity (CG) envelopesCenter of gravity (CG) envelopes including weight CG diagrams and the derivations;

3.2.3Design load factor and airspeed diagrams (V-n diagrams)Design load factor and airspeed diagrams (V-n diagrams) for symmetrical and unsymmetrical flight;

3.2.4Design load factors, airspeeds, and rotational velocities and accelerations

3.2.5Elevated temperature criteria

3.2.6Internal store pressure criteria

3.2.7Design landing and ground handling operations

3.2.8Design symmetric and asymmetric maneuversDesign symmetric and asymmetric maneuvers, including steady state and dynamic maneuvers, resulting in high dynamic load amplification (i.e. buffet);

3.2.9Spanwise load factor & V-M-T (Shear-Moment-Torsion) distributionsSpanwise load factor & V-M-T (Shear-Moment-Torsion) distributions along pertinent design axes for store (as stipulated by contract);

3.2.10Six Degree of Freedom (6DOF) store center of gravity (cg) translational and rotational design accelerationsSix Degree of Freedom (6DOF) store center of gravity (cg) translational and rotational design accelerations (as stipulated by contract);

3.2.11Store-to-rack interface definitions and loadsStore-to-rack interface definitions and loads including all swaybraces and hooks (as stipulated by contract);

3.2.12Design load and/or actuation load requirementsDesign load and/or actuation load requirements associated with door, panel, and/or turbine operation of radiating stores;

3.2.13Store-to-store and store-to-aircraft clearances

3.2.14Store handling, cradling, transport, and abuse criteria

3.2.15All critical loading configurations as specified by the contract

3.3Define the specific design conditions selected for analysis including

3.3.1A list of store loading configurations selected for analysisA list of store loading configurations selected for analysis, together with the basis for selection of those conditions and configurations;

3.3.2A discussion of design featuresA discussion of design features, which affect determination of critical conditions;

3.3.3All sources of aerodynamic and inertial data

3.3.4All methods and assumptionsAll methods and assumptions to be used in the calculation of aerodynamic and inertial loads.

3.4Define the structural capability by superimposing allDefine the structural capability by superimposing all limiting factors, including control power, angle of attack, and buffet, on altitude vs Mach number envelopes.

3.5Define the effects of weight, CG, andDefine the effects of weight, CG, and variable geometry component positions;

3.6Document a detailed description of the controlDocument a detailed description of the control system, its components, and their functions.

3.7Document the sources and complete explanations ofDocument the sources and complete explanations of all loads on the system and its components.

3.8Define the following data for field landings, arrested landings, Field Carrier Landing Practice landings, field takeoffs, catapults, taxiing, and ground handling

3.8.1A summary of all in flight loading conditionsA summary of all in flight loading conditions that will be combined with inertial loads;

3.8.2The catapult's horizontal accelerations used for each type of catapult

3.8.3The arresting hook forces and horizontal accelerationsThe arresting hook forces and horizontal accelerations used for each type of arresting gear;

3.8.4The range of landing gear variation in servicingThe range of landing gear variation in servicing that will be used for design;

3.8.5A summary of all ground handling, taxi, securing, and miscellaneous ground loading conditions

3.8.6Substantiating data, pertinent references, and amplifying dataSubstantiating data, pertinent references, and amplifying data showing that the derivations of the required range of parameters comply with contract requirements;

3.8.7Drawings showing required attitudes with auxiliary doorsDrawings showing required attitudes with auxiliary doors in the fully extended and fully closed position relative to the store reference line;

3.8.8The clearance between the adjacent store or structure

References

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