If a strain gage is placed in the wing of an aircraft where the
temperature drops...
If a strain gage is placed in the wing of an aircraft where the
temperature drops by 50 degrees F in flight. How do you configure
the bridge to compensate for the resulting error?
Strain gauges are placed at two locations on a wing that is
being tested in a wind tunnel. The first gauge is near the fixed
base of the wing and the other gauge is near the free wing tip. Two
tests are performed: (a) the wing vibration is recorded for low
velocity laminar flow and (b) for high velocity turbulent flow. For
each of these tests, discuss the following: (i) Describe and
compare the time histories you would expect to...
Draw a sectional diagram of an aircraft wing, showing the
structure of the wing and the control surfaces. Then detail the
most appropriate materials used for each of the main parts,
mentioning at least 2 metals, 1 CFC composite, and 1 sandwich
material and expalin why each is used in that application, with
reference to the properties required to withstand the forces
involved.
Delta Wing Aircraft Specifications
(do the necessary assumptions if needed)
Wing Area: 585 m2
Wing Span: 32 m
Taper ratio: 0.019
Leading Edge Sweep angle: 65.57°
Wing loading: 4070 N/m2
Cruise Mach Number: 3
Cruise altitude: 22.5 km
(L/D) cruise = (L/D) max = 9
Calculate the cruising angle of attack?
Write down the cruising drag polar equation?
Using the drag polar found in (b), calculate
(CL1/2/CD) max and
corresponding Mach number maximizing
(CL1/2/CD).
One end of an iron poker is placed in a fire where the
temperature is 651 °C, and the other end is kept at a temperature
of 24.0 °C. The poker is 0.880 m long and has a radius of 4.40 ×
10-3 m. Ignoring the heat lost along the length of the
poker, find the amount of heat conducted from one end of the poker
to the other in 7.00 s. Take the thermal conductivity of iron to be...
An object is taken out of a 65 Froom and placed outside
where the temperature is 35 F
Five minutes later, the temperature is 63 F It cools
according to Newton's Law.
a) Set up the IVP for this problem.
b) Solve the IVP from (a).
c) Use (b) to determine the temperature, to the nearest
tenth, of the object after one hour.
An aircraft firm is considering three different alloys for use
in the wing construction of a new airplane. Each alloy can be
produced in four different thicknesses (1 = thinnest, 4 =
thickest). Two test samples are constructed for each combination of
alloy type and thickness, then each of the 24 test samples is
subjected to a laboratory device the severely flexes it until
failure occurs. For each test sample the number of flexes before
failure is recorded, with the...
An aircraft firm is considering three different alloys for use
in the wing construction of a new airplane. Each alloy can be
produced in four different thicknesses (1 = thinnest, 4 =
thickest). Two test samples are constructed for each combination of
alloy type and thickness, then each of the 24 test samples is
subjected to a laboratory device the severely flexes it until
failure occurs. For each test sample the number of flexes before
failure is recorded, with the...
1. Find a picture on the internet that shows the underlying
structure of an aircraft wing and discuss how it is similar to the
box beam concept.
2.The box beam concept handles bending and torsional loads.
Consider and discuss what structural elements we have explored so
far in this course that address these loads. Hint: there are two
(one for bending and one for torsion). Also, please include the
following in the discussion.
Depending on the air vehicle performance requirements...
A model aircraft in a wind tunnel with a wing area of 0.9 square
meters and a chord of .24 meters is subject to a sea level standard
airflow at 130 m/sec. The zero-lift moment about the
center-of-gravity is measured as – 7.8 N m. At a different angle of
attack, the moment about the center-of-gravity is measured as 13.5
N m with a lift of 2,650 N.
(A)Calculate the value of the moment coefficient about the
aerodynamic center, and...