Accession Number : AD0428027


Title :   A RATIONAL METHOD FOR PREDICTING ALIGHTING GEAR DYNAMIC LOADS. VOLUME 1. GENERAL METHODS


Descriptive Note : Rept. for 2 Feb 1961-30 June 1962


Corporate Author : CHANCE VOUGHT CORP DALLAS TX


Personal Author(s) : Ferguson, T R ; Mollick, J ; Kitts, W W


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/428027.pdf


Report Date : Dec 1963


Pagination or Media Count : 189


Abstract : A rational method for predicting alighting gear loads during landing impact is discussed. The equations describing the motions of a vehicle during landing impact are developed for an arbitrary vehicle configuration. The method is of sufficient generality and accuracy to allow the formulation of alighting gear dynamics problems in flight vehicles including V/STOL aircraft, high gross weight logistic vehicles, recoverable booster vehicles, advanced tactical and defense vehicles operating out of remote areas, and lunar vehicles. It allows for the effects of varying coefficients of friction and damping, combinations of initial conditions of pitch, roll, yaw angles and rates, vertical, longitudinal and lateral motion, slippage of the gear relative to the alighting surface, flexible alighting gear and vehicle structure, simultaneously applied triaxial ground loads, and various types and number of alighting elements. The formulation is intended for the cantilevered type of gear, although the articulated type may be handled through some extensions of the formulation.


Descriptors :   *LANDING GEAR , PARACHUTE DESCENTS , MOTION , IMPACT SHOCK , MATHEMATICAL PREDICTION , MATHEMATICAL ANALYSIS , FUSELAGES , AIRFRAMES , EQUATIONS , LANDING IMPACT , HYDRAULIC EQUIPMENT , AIRCRAFT TIRES , SKIS , LOADS(FORCES) , STRUCTURES


Subject Categories : Aircraft


Distribution Statement : APPROVED FOR PUBLIC RELEASE