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Tom Yager at NASA Wallops Test Facility, nr The Hamptons Virginia IS Mr Friction in the USA.
He has been conducting tests on specimen surfaces using a variety of carts for many years. He's forgoten more than the rest of us will ever know! The contibution textue makes to runway braking performance appears to be gathering support. Avinor, the Norwegian Airport operator has just published a paper on using lasers to measure texture and relate it to wet friction characteristics. ICAO has recently formed a group of experts to review current guidance and make recommendations for change. Sir George Cayley |
Q
Hi
Do you know where in the JAR is says that in emergency we are not required to add 1.67 to the landing dist? Thanks |
Getting to grips with performance says:
In the event of an aircraft system failure, known prior to dispatch and affecting the landing distance, the available runway length must at least be equal to the required landing distance with failure. This distance is equal to the required landing distance without failure multiplied by the coefficient given in the MMEL, or to the performance with failure given by the Flight Manual. Suppose that you have flaps locked and your actual landing distance is 2300m and then find rwy with distance 1.67*2300 ;) |
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