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Thursday, July 30, 2020 | History

2 edition of Temperature distribution in an aircraft tire at low ground speeds found in the catalog.

Temperature distribution in an aircraft tire at low ground speeds

John L. McCarty

Temperature distribution in an aircraft tire at low ground speeds

by John L. McCarty

  • 324 Want to read
  • 4 Currently reading

Published by National Aeronautics and Space Administration, Scientific and Technical Information Branch, For sale by the National Technical Information Service] in Washington, D.C, [Springfield, Va .
Written in English

    Subjects:
  • Airplanes -- Tires.,
  • Airplanes -- Landing gear.

  • Edition Notes

    StatementJohn Locke McCarty and John A. Tanner.
    SeriesNASA technical paper -- 2195.
    ContributionsTanner, John A., United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch.
    The Physical Object
    Pagination33 p. :
    Number of Pages33
    ID Numbers
    Open LibraryOL17663284M

    4 FLIGHT SAFETY FOUNDATION • FLIGHT SAFETY DIGEST NOTES: (1) Mu-meter equipped with smooth RL-2 tires inflated to 69 kPa (10 lb/in.2) (2) Runway friction tester equipped with smooth RL-2 tire inflated to kPa (30lb/in.2) (3) Surface friction tester and BV skiddometer equipped with grooved aero tire inflated to kPa ( lb/in.2) (4) Ambient air temperature range, to +5 o C (5 . $\begingroup$ Tire sidewall heating is also the limiting factor for automotive and truck highway tires, either in speed or in load. Essentially it is the amount of flex (load and air pressure) times the number of flexes (rotations) minus the heat dissipated (time based); So fast and light or slow and heavy are ok, but not fast and heavy.

    Type_____ tires are used for high performance jet aircraft with their extremely high takeoff speeds. 8 Tubeless tires are identified by the word_______ on their sidewall, and jack of identification signifies that a tube should be used in the tire. Optimal Tire Temperature In this video I discuss the importance of maintaining optimal tire temperature on the track. I also explore how a driver directly plays a key role in making sure temperatures stay in an optimal range. Leave a comment at the bottom of the page. And don’t forget there are always new videos coming out, so keep checking back.

      The book provides a vital link in landing gear design technology from historical practices to modern design trends, and it considers the necessary airfield interface with landing gear design. The text is backed up by calculations, specifications, references, . Note: 35 psi is the assigned "maximum load" pressure for standard load tires and 41 psi is the assigned "maximum load" pressure for extra load tires. The above chart correctly shows that an extra load tire is not rated to carry any more load than a standard load tire when both are inflated to the same pressure (up to the standard load tire's "maximum load" pressure of 35 psi).


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Temperature distribution in an aircraft tire at low ground speeds by John L. McCarty Download PDF EPUB FB2

Temperature distribution in an aircraft tire at low ground speeds. Responsibility John Locke McCarty and John A. Tanner. Imprint Washington, D.C.: National Aeronautics and Space Administration, Scientific and Technical Information Branch ; [Springfield, Va.: For sale by the National Technical Information Service], Temperature distribution in an aircraft tire at low ground speeds / By John L.

McCarty, John A. Tanner and United States. National Aeronautics and Space Administration. An experimental study was conducted to define temperature profiles of 22 xtype 7, bias ply aircraft tires subjected to freely rolling, yawed rolling, and light braking conditions.

Temperatures along the inner wall of freely rolling tires were greater than those near the outer : J. Mccarty and J. Tanner. When dispatching at or near the tire-speed-limit weight, which is most likely to occur at hot temperatures and high elevations, a slower rotation than the Boeing-recommended 2- to 3-degrees-per-second average may increase the actual groundspeed at liftoff beyond the certified tire speed limit.

Mc Carthy J.L., Tanner J.A., Temperature Distribution in a Aircraft Tire at Low Ground Speed, NASA Technical PaperGoogle Scholar [7] Tanner J.A., Dreher R.C., Strubb S.M., Smith E.G., Tire Tread Temperatures During Antiskid Braking and “cornering” on a Dry Runway, NASA Technical PaperGoogle ScholarCited by: 8.

Specific data on the proper tire sizes for different aircraft main and auxiliary/nose gear, speed ratings, nominal inflation pressures, dimensions, and other data needed by users to obtain the maximum service from their aircraft tires are presented in this booklet.

Download Tire DataBook Key Sections. Data Section - Tires. Heat generation in aircraft tires The method of temperature computation using. eqn (5) now consists of starting from whatever.

initial temperature state one wishes in each of the. cells, allowing a short time interval to take place. and computing the heat. An experimental study was conducted to define temperature profiles of 22 xtype 7, bias ply aircraft tires subjected to freely rolling, yawed rolling, and light braking conditions.

General notes on operating aircraft tires Aircraft tire data Aircraft tire application data Helpful conversion factors 73 Michelin manufactures a wide variety of sizes and types of tires to the exacting standards of the aircraft industry. The information included in this Data Book has been put together as an engineering and technical reference to support the users of Michelin Size: 1MB.

A numerical procedure has been applied for investigating the temperature distribution in a smooth tread bias tire of a light truck, operated under different speeds, pneumatic pressures, and. board the aircraft at very low speeds. At the low speeds, temperature is typically measured mechanically using a bimetallic strip that moves a needle indicator.

At higher speeds the stagnation or total air temperature (TAT) is measured and then corrected to ambient conditions to provide better accuracy of OAT Size: KB.

On the modeling of aircraft tire. (the influence of the temperature on tires dynamic responses, its distribution within the tire thickness, and the evolution of the friction coefficient in tire/ground contact). J.L. McCarthy, J.A. Tanner, Temperature distribution in a aircraft tire at low ground speed, NASA technical paperCited by: Finite element analysis of aircraft tire behaviour under overloaded aircraft landing phase Introduction Aircraft tires are designed to travel at high speeds to support heavy loads which may include passengers, luggage and the entire weight of the aircraft.1.

While the flare maneuver is being conducted, the vertical speed is inconstant, and the pitch angle is increased in order to bring enough drag and slow the aircraft by about 10 knots [23]. The vertical sink rate at the moment of landing for the Boeing aircraft usually fluctuates between m/s and 3 File Size: 1MB.

Engine anti-ice must be on during all ground and flight operations when icing conditions exist (and prior to descent into icing conditions) except during climb and cruise when the temperature is: below ° C SAT Icing conditions exist on ground: OAT 10° C (50° F) or below Icing conditions exist in flight: TAT 10° C File Size: 1MB.

The choice of the main wheel tires is made on the basis of the static loading case. The total main gear load (Fm) is calculated assuming that the aircraft is taxiing at low speed without braking. As shown in Figureequilibrium gives [5, p.

] F l l l m W n m n = + () where W is the weight of the aircraft and lm and ln are the distance File Size: KB. As expected, tire carcass temperatures increase with distance traveled and the rate of increase varies throughout the carcass.

(See fig. 5.) The effect on the temperature distribution in a tire carcass due to extended roll distance, tire deflection, yaw angle, slip ratio, and ground speed is examined.

In this video I discuss the importance of maintaining optimal tire. This is because tires get very hot due to tread flex and friction generated by rotational speed, cornering and braking.

Higher loads and speeds generate higher temperatures. Most street tires come with 10 to 12/32nds of tread, but a great auto-x street tire will be. Heat Generation in Aircraft Tires Under NASA Contractor Report Heat Generation in Aircraft Tires Under Free Rolling Conditions Samuel K. Clark and Richard N.

Dodge University of Michigan Ann Arbor, Michigan validity of proposed tire, weight, and ground speed andFile Size: 4MB. A major design point around which aircraft brakes are designed is the worst-case scenario of rejected takeoff (RTO) at the maximum rolling speed V 1, known as the decision speed.

Above V 1, a takeoff could not be safely aborted without serious risk of the airplane failing to stop before the end of the runway. After reading several accounts of misfortune on the road, I was curious as to what you should expect as normal tire temperature if you pull into a rest area and happen to have a digital temp gauge on hand to read.

On a recent trip to Norfolk I used my device, and the tires read front and   Accordingly, you’ll want to adjust the idle speed to put it back in the RPM range. Any changes require supervision by an A&P. On a Marvel-Schebler carb, as on an automotive carb, the idle speed adjustment is made with a set-screw on the low-RPM stop at .