Title of the invention
Control Stick Hand Grip Removal / Installation Tool for a Supersonic Fighter Aircraft.
Field of invention
The control stick of a supersonic fighter aircraft is installed after the cockpit is fully equipped. Giving Torque to the hand grip of control stick is difficult with the existing tool. The inventors developed a removal / installation tool which can easily tighten and give torque to the control stick hand grip, which is 1.9 daN (19 NM).
Use of invention
The invented tool is very useful in tightening/loosening and to give torque to the control stick hand grip during installation/removal in the cockpit of a supersonic aircraft. This tool is having good grip, hence more effective and accommodates the torque wrench. Length of the new tool is less, more user friendly and damages to the nearby instruments are avoided and ensuring required torque of 1.9 daN (19 NM) to the control stick handgrip during installation. This gives perfect mechanical grip, and can be fixed in many angles as per the technical convenience as this is compact, the length of the torque wrench is accommodated and does not touch the nearby switches and components in the cockpit while turning.
Prior art
In the prior art the control stick was installed first and then control stick hand grip was assembled on it. The control stick hand grip would be torque tightened to the required value. Due to Pitch/Roll force checking at necessities, the stick handgrip is removed time and again. Thereby the torque tightening is done at final stage when the cockpit is fully equipped. Previously installed Line Replaceable Units (LRU) around the control hand had to be removed in order to give torque tightening. The tool available in the aircraft hangar was the Origin Equipment Manufacturer (OEM) recommended tool for the particular line of aircrafts.

Draw backs of prior art
With the previous tool supplied by OEM (prior art), Line Replaceable Units (LRU) installed around the control stick handgrip had to be removed in order to give torque tightening due to its length. The tool available in the aircraft hangar was the Origin Equipment Manufacturer (OEM) recommended tool for the particular line of aircrafts. This resulted in loss of productivity.
However the technicians had to exercise caution and they faced inconvenience while giving torque because, the consoles and equipments and instruments might have been equipped at the time of giving final torque. The length of the prior art tool was a great disadvantage.
The material used to make previous tool (prior art) was malleable and the working edge used to get blunt over a period of time. This resulted in the tool getting slipped while tightening or loosening operation, thereby damaging the control stick handgrip. Comparison between prior art and present invention
In the prior art the control column was installed first and then control stick hand grip was assembled on it. The control stick hand grip would be torque tightened to the required value. Once the cockpit is fully equipped, then control stick hand grip required again torque tightening. Previously Line Replaceable Units (LRU) installed around the control hand had to be removed in order to give torque tightening. The tool available in the aircraft hangar was the Origin Equipment Manufacturer (OEM) recommended tool for the particular line of aircrafts.
In the present invention, the tool is having good grip, hence more effective and accommodates the control hand-grip tool. Length of the new tool is less, more user friendly and damages to the nearby instruments are avoided and required torque to control hand grip is ensured.

Aim of the invention
Giving Torque to the hand grip of control stick was difficult with the existing tool supplied by OEM. The inventor's aim was to develop a removal / installation tool which is short, having good grip and can easily tighten and give torque to the control hand grip.
Summary of the present invention
The technicians working for the supersonic fighter aircraft invented a tool for giving torque to the control handle grip. The invented tool is made from CM.Steel (Chromium Molybdenum Steel) and fabricated by Drilling Rooting Template (DRT). This tool is very useful in tightening and gives torque to the control hand grip while installing Control Handle in the cockpit of a supersonic aircraft. This tool is having good grip, hence more effective and accommodates the torque wrench. Length of the new tool is less, more user friendly and damages to the nearby instruments are avoided and required torque to control hand grip is ensured.
Brief description of drawings
FIG.1 illustrates Removal / Installation Tool (Type-1)
FIG.2 Illustrates Removal / Installation Tool (Type-2)
FIG.3 Photographs of Removal / Installation Tool (Type-1 & Type-2)
FIG.4 Photograph of Removal / Installation Tool fitted to torque wrench
FIG.5 Illustrates Removal/Installation Tool giving torque to Control Hand Grip

Statement of invention
The control stick of a supersonic fighter aircraft is installed after the cockpit is fully equipped. Giving Torque to the hand grip of control stick is difficult with the existing tool. The inventors developed a removal / installation tool which is shorter than the previous tool and having good grip. Hence it can be easily used for tightening and giving torque to the control hand grip.
. Detailed description of invention
The invented tools are made from CM.Steel and fabricated by Drilling Rooting Template (DRT). The tools weigh 0.122 Kg (Type-1) and 0.220 Kg (Type-2). This tool is having good grip, hence more effective and accommodates the torque wrench. Length of the new tool is less, it is more users friendly and damages caused while tightening to the nearby instruments are avoided and required torque to control hand grip is ensured. It accommodates the torque wrench inside the cockpit around the control stick in all turning angles without touching the consoles and nearby instruments. This tool helps in reducing human effort in the removal/installation process. The working edge does not get blunt due to its material strength which saves the tool from getting worn out. The same tool can be modified as per the size of various other control stick handgrips of different a ire rafts.
. Drawings & worked examples

Claims
We claim
1. The design of Control Stick Hand Grip Removal / Installation Tool.
2. Any combination of dimensions of the tool to suit as per the size of various other control stick handgrips of different aircrafts.