instructions to do so are provided in the maintenance manual. Batteries
Fuel pump Exhaust Spark plugs and wires Floats and skis 12-46
Repair or alteration of components when specific instructions are
provided in the maintenance manual. Patching a hole i
( ) 2 = det 0 t F t 0 FT d 0 a d t V = d t a d t x3 = det 0 t F 0 t FT d 0 a 0 t
F d 0 x3 = det 0 t F d 0 V . (4-20) The invertibility of the mapping t
requires det 0 t F 0 and as the volume has to be positive, the condition
det 0 t F > 0 results. For an
inspection checklist for the annual condition or 100-hour inspection. A
description of and the instructions for the maintenance, repair, and
overhaul of the LSA engine. A description of and the instructions for
the maintenance, repair, and alteration of t
12. Keywords The scope of that document is basically twofold: To
provide guidelines for the qualification necessary to accomplish various
levels of maintenance on LSA. To provide the content and structure of
maintenance manuals for aircraft and their comp
consensus standards for use by manufacturers, regulators, maintenance
facilities, LSA owners, and service providers. It is very unique that these
standards are the first ones in over 100 years to solely address the issue
of recreational aircraft use. It i
aviation industry could benefit from the computer. 2. Aviation
professionals who felt the aviation industry must benefit from the
computer. Some of those initial programs were either not very user
friendly (if developed by computer wizards) or not very so
to some strain tensor, E(*) , if the stress power density in the reference
configuration is 0 win = T(*) E (*) = J t S t D , (5-33) see eq. (6-19).
According to this definition, 0 T is work conjugate to 0 t E(G) . For
CAUCHY's stress tensor there is no wo
decomposed into a spherical part and a deviatoric part, S , S = 1 3 ( ) trS
1 + S = p1 + S , (5-21) where p = 1 3 kk = hyd , (5-22) is the mean
pressure or (negative) hydrostatic stress. Deviatoric stresses play an
important role for plastic behaviour of
in the description of motion given by eq. (4-10), attention is given to a
point in space, and we study what is happening at that point as time
passes. This description is called the spatial description, and the
independent variables (t x, t) present in eq
function with f(1) = 0 and f '(1) = 1. The most common strain tensors are
EngMech-Script.doc, 29.11.2005 - 23 - BIOT'S 17 (linear) strain
tensor, f (i) = i 1 = 0 t i 0 t E(B) = 0 t U I = 1 2 0 0 t u + 0 0 t ( ) u
T , (4-40) GREEN-LAGRANGEan (quadratic) st
(LSA) Maintenance The LSA category includes gliders, airplanes,
gyroplanes, powered parachutes, weight-shift and lighterthan-air aircraft.
There two general types of LSAs: Special (SLSA) and Experimental
(ELSA). The SLSA are factory built and the ESLA are
0 gi 0 g j = j i , t gi t g j = j i , (4-25) by means of which the metric
tensors13, 1 = gi g j = gi g j = gi g ( )j gi g j = gij gi g j = gij gi g j = j i
gi g j , (4-26) can be written in initial and current configuration, 0 B and
t B, respectively, and
pounds, more than 12,500? Mixed?) Does the program have built-in
templates for the aircraft you are working on? What FAA forms (if
any) are available in the program? 12-44 Does it have a user-friendly
template to enter the data for the form, or must you e
W = 1 2 t L t LT ( ) = t WT . (4-62) The coordinates of t D are the rates
of change with time of lengths and angles of material volumes, and the
coordinates of t W are the angular velocities of line elements. Since t W
is skew, t W d t x =t d t x , repres
item 1. However, if the repair or alteration is being done to an engine, a
propeller, or other appliance, entries must include the appropriate make,
model and serial number information. Item 6Enter appropriate data as
specified, and check the proper box i
GREEN (1793-1842) 16 No summation over (i) ! EngMech-Script.doc,
29.11.2005 - 22 - Figure 4.2: Polar decomposition of the deformation
gradient In the base of the eigenvectors, tensors can be represented in the
spectral form, 0 t U = I 0 nI 0 nI + II 0 nII
authorized to perform the 100-hour/annual inspection of the aircraft,
which he or she owns. LSA repairmanmaintenance is a U.S. FAAcertified LSA repairman with a maintenance rating per 14 CFR part 65.
This person is allowed to perform the required maintena
and certificate number of the person doing the return to service (RTS).
Permanent Records14 CFR 91.417(a)(2) and (b)(2) These records
must be retained by the owner during the time he or she operates the
aircraft. They are transferred with the aircraft at
29.11.2005 - 39 - 0 t S = t 0 F1 t S t 0 FT ( )i = t 0 F1 t S t 0 FT +t 0 F 1 t
S t 0 FT +t 0 F1 t S t 0 F T = t 0 F1 t S t L t S t S t LT ( ) t 0 FT . (5-44)
The term in parenthesis is OLDROYD's rate of CAUCHY's stress
tensor, t S o = t S t L t S t S t L
t x t 0 x = t +t v t , (4-57) we obtain the material derivative operator,
d dt = t + v t , (4-58) for calculating the rate of change with time of an
arbitrary field quantity in the spatial description. ( )i = d dt is the
material or substantial derivative
(rigid) rotations, it cannot be used to describe the deformation of a
material body. With the theorem of polar decomposition one can define
appropriate measures for deformation. By this, 0 t F can be decomposed
uniquely into two parts, 0 t F = 0 t R 0 t U
spatial (EULERean) formulations affect the calculation of time
derivatives (see section 4.5). 7 JOSEPH LOUIS LAGRANGE (17361813) 8 LEONHARD EULER (1707-1783) EngMech-Script.doc,
29.11.2005 - 19 - 4.3 Deformation The change of position of a particle, 0
x,
circle, which is referred to as MOHRs circle 30, is the locus of the
components of all possible stress vectors in a material point X, acting on
area elements under varying orientation. The stress components in the
actual coordinate system, xx , yy , ( ) x
t 0 t 1 dt , (6-32) where the first bracket vanishes due to eq. (6-27), so
that the variational problem finally writes as I = i F xi d dt F x i t 0 t 1
dt = 0 . (6-33) As i (t) are arbitrary (test functions), the term written in
brackets has to vanish in
CAUCHY (1789-1857) 21 For small deformations no difference has to
be made between differentiation with respect to the initial or the current
coordinates EngMech-Script.doc, 29.11.2005 - 25 - = d dt = ( 0 x,t) t 0 x
. (4-54) Since t x = t 0 ( ) x,t in the
impressis cogitur statum illum mutare. Lex II [Constat] mutationem
motus proportionalem esse vi motrici impressae, et fieri secundum
lineam rectam qua vis illa imprimitur. Lex III [Constat] actioni
contrariam semper et aequalem esse reactionem: sive corpo
, (6-15) Conservation of mass yields t d(O) (P) = t x t x t d t V t V (P) ,
(6-16) and CAUCHY's law (5-9) with divergence theorem, t x t t n d t A
t A(P) = t x t n t ( ) S d t A t A(P) = t x t ST ( ) t nd t A t A(P) = t t x t
( ) S d t V t V (P) = 2t q +t
unnecessary to account for all three components of the stress vector. In
sheet materials or under in-plane loading conditions, all stress vectors
can be assumed to lie in one plane, and the stress tensor in a Cartesian
coordinate system, ex , e y , e cfw_
5.3 PIOLA-KIRCHHOFF Stresses Beside CAUCHY stresses, many
other stress tensors are in use. In the previous section, stress is
understood as force, d t fc , per area, d t A. of the current configuration, t
B. As the current configuration arising under the