DESCRIPTION TECHNICAL FIELD

The invention describes a fixture for finalizing hydraulic, pneumatic and electrical components of an aircraft.

BACKGROUND OF INVENTION

Layout method is the prominent technology used for finalizing positions of functional components like filters, non return valve, relief valve, gauges, servo controllers etc. (Usually called as rotables or LRU's). Concept of interchangeably has got a challenging opportunity in military aviation industry as down time of aircrafts can be reduced by replacing unserviceable components of one aircraft by LRU's (Line replaceable Units) of other aircraft. Cleaning of hydraulic and pneumatic pipe lines are mandatory to avoid damages of functional components like pump, non return valve, manifolds, safety valves etc. Original LRUs are by passed with hoses for this purpose. Using of original LRU's to locate on aircraft and carry out installation procedure may lead to damaging of original LRU's and reduced .Hence the new invention is proposed.

SUMMARY OF INVENTION

In view of the above back ground, a dummy LRU concept is evolved wherein a onetime mock ups of all LRU's which are called in the circuit diagram by design will be fabricated with ICY tolerances for interface points. This dummy LRU's will be used while equipping stage of aircrafts to locate, finalize the interface points for electrical connections, pipe line connections etc. These dummy LRU cab termed as multipurpose tooling which can be cater as drill template, locator, bypass lines for system cleaning etc.

PROCESS DETAIL DESCRIPTION

Global Reference point from aircraft has been studied to locate mounting bracket installation points on aircraft, dummy LRU mounting points are finalized with respect aircraft axis. LRUs are mounted on this mounting brackets. Proper location of mounting brackets are essential to achieve interchangeability of components.

Dummy LRU tool is located to aircraft structure with proper guiding pin. This will ensure the positional accuracy of the component on aircraft. End fittings of the dummy LRUs are the reference point for finalizing the pipe lines for hydraulic system, pneumatic system, fuel system J and terminal points of electrical routing.

Aircraft is having various hydraulic, pneumatic and fuel systems to achieve critical missions. Cleanliness level of working fluids are essential to ensure safety of the flight. Filters are provided to clean the fluid during flight operations. Cleanliness of the pipelines and connections are to be ensured before flight tests. Cleaning operation of hydraulic, pneumatic and fuel system also can be carried out with this setup. Functional fluid will be passed through the pipe lines and dummy LRUs with the help of external source.

CLAIMS

We claim,

Concept of dummy LRU tooling reduces the cycle time and improves the system performance.