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Diano4ka-milaya [45]
2 years ago
6

Turbine blades mounted to a rotating disc in a gas turbine engine are exposed to a gas stream that is at [infinity] = 1100°C and

maintains a convection coefficient of 250 W/m2·K over the blade. The blades, which are fabricated from Inconel, 20 W/m·K, have a length of 50 mm. The blade profile has a uniform cross-sectional area of 6 × 10-4 m2 and a perimeter of 110 mm. A proposed blade-cooling scheme, which involves routing air through the supporting disc, is able to maintain the base of each blade at a temperature of 300°C.
a. If the maximum allowable blade temperature is 1050 deg. C and the blade tip may be assumed to be adiabatic, is the proposed cooling scheme satisfactory?
b. For the proposed heating scheme, what is the rate at which heat is transferred from each blade to the coolant?
Engineering
1 answer:
Nataly_w [17]2 years ago
3 0

Answer:

<u><em>note:</em></u>

<u><em>solution is attached in word form due to error in mathematical equation. furthermore i also attach Screenshot of solution in word due to different version of MS Office please find the attachmen</em></u>t

∴ Calculation maybe wrong but method is correct

Download docx
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7 0
3 years ago
Concerned with the number of maintenance visits the rocket can undergo before being out of service, you have been informed that
Ainat [17]

Answer:

(a) Mn = M₁ + (n-1) (M₂ -M₁) = 1 + (n- 1) 1 = n (b) n > 10 (exceed 10) or n =11 (c) n >50 or n= 51

After making a journey of 51 times, the rocket will be discarded

Explanation:

Solution

(a) Let Mn denotes the number of  maintenance visits after the nth journey

Then M₁ = 1 , M₂ = 1 +M₁ = 2, M₃ = 1 +M₂ = 3

We therefore, notice that M follows an arithmetic sequence

So,

Mn = M₁ + (n-1) (M₂ -M₁)

= 1 + (n- 1) 1 = n

or Mn =n

(b)  For what value of n we will get  fro Mn > 10

Thus,

n > 10 (exceed 10) or n =11

(c)Similarly of Mn is greater than 50 or Mn>50, the rocket will not be used or reused

So,

n >50 or n= 51

After making a journey of 51 times, the rocket will be discarded

7 0
3 years ago
Which alpha-numeric designator, systematically assigned at the time of manufacture, identifies the manufacturer, month, year, lo
Makovka662 [10]

An alpha-numeric designator which is systematically assigned at the time of manufacture, so as to identify the manufacturer, month, year, location, and batch is referred to as lot number.

<h3>What is a product?</h3>

A product can be defined as any physical object (tangible item) that is typically produced by a manufacturer so as to satisfy and meet the demands, needs or wants of every customer. Also, some examples of a product include the following:

  • Refrigerator
  • Television
  • Microwave oven
  • Pencil
  • Smartphone
  • Computer
  • Perfume

<h3>What is lot number?</h3>

A lot number can be defined as an alpha-numeric designator which is systematically designed and assigned at the time of manufacture, so as to identify the manufacturer, month, year, location, and batch.

Read more on products here: brainly.com/question/14308690

#SPJ1

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I want to solve the question
DedPeter [7]

Answer:

yes.

Explanation:

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what are some questions about simple machines that don't make me sound like i didn't pay attention in the lesson?
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Answer:

what are simple machines?

Explanation:

it is 2020 let's be honest all

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