.. _glossary:

Glossary
=========

.. glossary::
   :sorted:

   candel
      spring classification label. A *candel* is a support fitting for a :term:`rail`.

   leg
      spring classification label. A *leg* is a support fitting for :term:`OWB`.
      

   section
      Section of the Aircraft, as defined by the OEM. This differs from the term :term:`zone`, which is a section defined by the organization of the :term:`LOPA` itself.

   zone
      Section of the Aircraft, as defined by the :term:`LOPA` itself. It is a section of homegenous analysis (standard or non-standard). The zone is not to be confused with :term:`section`, the latter being an Aircraft sction as defined by the OEM.

   OWB
   owb
      Overwing Beams. Those longitudinal beams are located over the wingbox.

   trace
      in the context of Checkers Analysis, a *trace* is a set of chronological tabular log of what has been done by the checker.

   MS
   Margin of Safety
      Calculation provinding a positive number for a non-failing item, and a negative one for a failing item. Usually defined as :math:`MS = allowable / applied - 1`.

   CID
      *Checker ID*. A checker identification number, *eg.* "02" is the non-standard Crossbeam Shear checker.
  
   lcid
   LCID
      *Load Case ID* A Load case ID identification number.

   dressing
   dressed
   dress
      in the context of :term:`MS` calculation, the *MS* dressing consists in make a float number easily readable *eg.* a raw MS = -0.001 is shown as ">-0.01".

   OEM
      Original Equipment Manufacturer
      
      In the User Manual, OEM is mostly used to refer to aircraft manufacturer Boeing or Airbus.
      However it could also be used to designate cabin equipment manufacturer like seats.

   PAX
      Passengers 
      
      Throughout the User Manual, PAX is used to designate cabin passengers.

   AC
      Abbreviation of Aircraft
   
   fsconf
      Floor Structure Configuration
      
      fsconf is a key word used by the FloorTools software referring to a floor structure configuration. 
      
   Loading Reference
   Reference
      A "critical" standard PAX seating installating entered in the FTools software and used as reference to pass the non standard seating installation
   
   SSR
     Structural Substantiation Report
     
   IFL
    Interface Load
    
    In the User Manual, IFL refers to any cabin monument floor interface load (seat, shroud, shell, partition, small cabinet, etc...)
    
   vbeam
    Virtual Beam
    
    Beam of unique property ID regrouping several Finite Elements. See :ref:`vbeam_explained` for further references.
    
   Crossbeam
    
    Designate the transversal floor beam. This more generic term "floor beam" is also used to designate a crossbeam
    
   Rail
    Designate the longitudinal seat track. Rail or seat track can be independantly used.
    
   Checked model
    FE model of the floor structure loaded with user defined loading corresponding to a non standard seating installation
    
   Reference model
    FE model of the floor structure loaded with standard PAX seating installation interface load.
    
   POC
    Passenger Occupancy Combination 
     
   TTOL
    Taxi, Take Off and Landing

   MISW
    Maximum Installed Seat Weight. The maximum installed seat weight is the maximum allowable weight for the seat with all components and includes all
    equipment the seat installer may add to the seat, such as emergency equipment or literature pocket contents. This weight is equal
    to the minimum total tested seat weight of all static/dynamic tests used for substantiation of the subject seat P/Ns. However, this
    weight must be verified against seat track interface loads and other aircraft/structural limitations.

   LOPA
    Layout of passenger Accomodations. 

    In the `FTools` context, `lopa` refers to
    Aircraft layout to be bound on an Aircraft :term:`fsconf`. The lopa is provided by user as an XLSX input data file.
  
   Checker
    One analysis module that performs an independant calculation on a dedicated structural item.

   Wheelbase
    In a LOPA context, a seat's wheelbase is the distance between seat's front and aft legs.