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Finite element analysis verification |
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|  MIL-T-26025E (USAF)
Finite element analysis verification. It shall be shown by the use of finite element analysis,
4.7
which shall include a working paper, stress plots and node analysis, that the frame proposed by the
manufacturer for the fabrication of this vehicle shall maintain its structural integrity over the life of the
vehicle. The analysis shall include all stress, dynamic loading, vibrational distortions and shock
loading that would be imposed on the frame during normal operational use and in accordance with the
performance specification described in this specification. Normal use shall include, as a minimum, an
unloaded maximum stop and a maximum drawbar pull. The frame materials allowable stress used in
this frame design shall be in accordance with the following order of precedence:
a.
SAE Standards.
b. ASTM Standards.
ASME Standards.
c.
d. AISC Standards.
PREPARATION FOR DELIVERY
5.
Preparation for delivery shall be in accordance with the contract.
5.1
NOTES
6.
tended Use. The tractors furnished under this document will be used for towing aircraft
6.1
whose gross weights are not more than 175,000 lbs and trollers whose gross weights are not more than
93,000 lbs, under existing weather and grade conditions.
Ordering Data. Procurement documents should specify the following:
6.2
a.
Title, number, and date of this document.
b.
Type of winterization required (see 3.1.4,3.4.6, 3.6).
Hydraulic Brakes required (see 3.3.3.2)
c.
Air for tow trailer (see 3.3.3.3).
d.
Additional pintle and electrical connection (see 3.7.2).
e.
f.
Finish color required, if not Forest Green, Color Number 24052 of FED-STD-595 (see
3.8.2.1, 3.8.2.2).
Additional pintle for aircraft towing (see 3.7.3).
g.
Pintle arrangements for testing (see 3.7.4).
h.
Identification required if other than MIL-STD-1223 (see 3.9.1).
i.
If user testis required and government site of user test (see 4.4).
j.
6.3
.
Commercial. A manufacturer's standard product, having been marketed, in production and
6.3.1
sold in substantial quantities to the general public for a minimum of one year prior to the date of the
invitation for bid or request for proposal. An item is sold in substantial quantities only when the
quantities regularly sold are sufficient to constitute a real commercial market. Nominal quantities,
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