Skip to main content

Hub slippage

The Tire and hub system in aircraft just like any other wheel, work in combination with each other to provide a smooth translation motion of the aircraft. However the forces acting on the aircraft and a car or a bike is where the difference starts. Aircraft wheel has to bear a lot of load during its rotation as compared to a car.
This is why the hub slippage is most common in aircraft and not a car or a bike. This is a phenomenon where the hub and tire slip under the immense pressure exerted by the aircraft load.
This phenomenon does not occur on all tires. Some of the tires that allow such phenomenon are:
1. All Helicopter tube tires
2. Tires having inner tube.
3. The tire pressure being less than 150 Psi.

The hub slippage is detected by painting a red paint on the hub and tire. The pain being a strip of width of 1 inch and length of 2 inch. After every take off and landing the wheel is inspected for slippage. If the alignment of the paint on the hub and the tire exceed more than 1/4 inch then the wheel assembly should be replaced.


Failure to correct tire slippage may cause the valve steam to be ripped from the tube. So this is a critical check that needs to be performed on a plane.

All about aircraft tires...
Labels:

Comments

Post a Comment

Popular posts from this blog

ATA numbering system

 An aircarft has a lot of parts, manufacturing them is one thing maintaining them is some other level challange. Thus to describe what needs to be done for what part requires a lot of documentation.  The easy way engineers have come up is to name each section of the aircraft as different title numbers.  ATA- Air Traffic association. It was created by people in ATA so called ATA chapters.  with 100 chapters ATA  So when some one says ATA chapter 72 it will always mean engine. ATA 27 flight controls ATA 32 landing gear ATA 72 is engine  and so on If we go even deeper. ATA 72-00-01 is fan module ATA 72-00-02 is core module ATA 72-00-03 is HPT Module ATA 72-00-04 is LPT module ATA 72-00-05 is AGB module and so on
Post a Comment
Read more

Understanding DO 178C (Safety critical avionics software)

DO-178C (Document for Operational) What Is DO-178C? DO-178C , officially titled “Software Considerations in Airborne Systems and Equipment Certification,” is a set of guidelines published by RTCA (U.S.) and EUROCAE (Europe). It provides a rigorous framework to plan, develop, test, and certify software used in aircraft systems , ensuring that the software is both safe and compliant with regulatory requirements. It is widely accepted by FAA , EASA , and other aviation authorities worldwide. Why DO-178C Is Important Airborne software can impact human lives . Whether it’s controlling engine thrust, displaying flight routes, or automating cabin pressure, a software error could have catastrophic consequences . DO-178C ensures: Safety-critical systems behave predictably Software is free from unintended behavior Traceability exists between requirements, code, and tests Key Principles of DO-178C 1. Software Levels (DAL – Design Assurance Levels) The stringency of testing and proce...
Post a Comment
Read more

Different Modules of Aircraft engine

There are mainly 17 different modular structures in an Aircraft engine. 1. Fan module. a) Spinner Code b) Fan blades c) Fan forward Case d) LPC stator e) LPC rotor f) Fan shaft g) Fan frame 2. Core module a) HPC Stator b) HPC rotor c) compressor rear frame d) combustor e) HPT stage 1 module assy 3. HPT module a) HPT stator b) HPT rotor 4. LPT module a) LPT assy b) Turbine rear frame 5. AGB- Accessory Gearbox
Post a Comment
Read more