HW7
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Purdue University *
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Industrial Engineering
Date
Dec 6, 2023
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Uploaded by AgentTurtlePerson4234
ASM 22200 Homework #7
-1-
ASM 22200
–
Learning Module Seven
Homework Problem Assignment
On Track Submission:
Prior to midnight, day of Lecture #14
Problems from Page #330:
Finner and Straub.
Farm Machinery Fundamentals. 1985. American
Publishing Company, Madison, WI.
1.
15.1 - What is the peripheral speed of an 18
in
combine cylinder spinning at 950
rpm
?
2.
15.4 - What is the total estimated corn loss in a field if 5 good sized ears are found in a
row length of 131
ft
, and 70 kernels are found in a 40
in
x 40
in
square?
What is the
%
loss
if the crop averages 175
bu / ac
?
Problems from Page #159-160:
Hunt and Wilson.
Farm Power & Machinery Management 2016.
Waveland Press, Inc., Long Grove, IL.
3.
10.1
4.
10.2
5.
10.5
Problems from Dr. Bob:
6.
Barth Bumblebutt has an older uni-system harvest tractor.
The machine picks 4 -
36”
rows of corn, and the engine divides its 135
hp
output between the propulsion drive,
corn head, and the separator.
The corn head requires 8.5
hp
per row to operate
effectively.
The separator requires 38.5
hp
/
mph
of ground speed, and the rolling
resistance of the machine requires 23.7
hp / mph
to overcome.
What is the maximum
speed that Barth can shell corn?
ASM 22200 Homework #7
-2-
7.
Barth switches to 30” rows and need
s to upgrade his farming system.
Billy finds a
neighbor that has a six row corn head for the uni-system that he no longer uses and will
sell cheaply
.
It doesn’t fit Barth’s harvest tractor
right, and Billy and Barth have to do
significant modification with the cutting torch and welder to make things work.
It is
heavier, and they have to re-ballast the tractor.
The rolling resistance rises to 31.3
hp /
mph
.
The corn head has seen better days.
It requires 11.0
hp
per row to operate
effectively.
What is Barth’s new maximum corn shell
ing speed?
8.
Making decisions like this, how does the Bumblebutt family manage to continue
farming year after year?
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