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What were some of the challenges to safety resulting from such radical airframe designs as highly swept wings, high wing loading

Andrew [12]

How to take off and land, stopping considerations (stopping distance), control system capability over a large speed range and flutter, and structural integrity for the wing platform and speed range.

8 0

3 years ago

Before you calculate the moment capacity for a steel beam, you have to determine the classification of beam.

kirill [66]

Answer:

True

Explanation:

True - because different classification of steel beam have different yield strength.

The moment capacity for a steel beam is given by;

M = Mn / Ωₙ

where;

M - the maximum moment acting on the beam

Ωₙ - is the Safety Factor for Elements in Bending = 1.67

Mn - nominal moment of the steel, given as

$M_n = Z_x *f_y$

where;

Zₓ - the Plastic Section Modulus in the x or strong axis.

$f_y -$ is the Yield Strength of the Steel (A36W, A46 W or A50W)

A36W = 36 ksi

A46 W = 46 ksi

A50W = 50 ksi

Thus, before you calculate the moment capacity for a steel beam, you have to determine the classification of beam, for the yield strength of the steel beam.

6 0

4 years ago

Accenture is working with a client to improve their current security infrastructure. The client wants to redefine the security p

Zepler [3.9K]

The idea that Accenture might recommend to the client to improve their current security infrastructure is;

<u><em>To develop a long term security strategy that includes an effective risk management plan.</em></u>

Accenture Security is a security outfit that provides next-generation cybersecurity services in consulting to aid individuals/organizations to develop a robust cyber resilience that is very effective from the inside out.

Now, since the client wants to redefine the security programs, create long-term plans for effective audits, and proactively plan against future threats, It means that Accenture will have to develop a long term strategy that is also an effective risk management strategy.

Read more at; https://brainly.in/question/38123110

5 0

2 years ago

Tungsten is being used at half its melting point (Tm≈3,400◦C) and astress level of 160 MPa. An engineer suggests increasing the

Paladinen [302]

Answer:

Explanation:

The missing diagram is attached in the image below which shows the deformation map of the Tungsten.

Given that:

Stress level $\sigma = 160 MPa$

T = 0.5 Tm

$\implies \dfrac{T}{Tm} = 0.5$

G = 160 GPa

$\implies \dfrac{\sigma}{G} = 10^{-3}$

a)

The regulating creep mechanism is dislocation driven, as we can see from the deformation mechanism.

The engineer's recommendation would not be approved because increasing grain size results in a decrease in the grain-boundary count, preferring dislocation motion. The existence of grain borders is a hindrance to dislocation motion, as the dislocation principle explicitly states. To stop the motion, we'll need a substance with finer grains, which would result in more grain borders, or a material with higher pressure. In the case of Nabarro creep, which is diffusion-driven, an engineer's recommendation would be useful.

b)

If stress level reduced to $\sigma = 1.6 MPa$

$\implies \dfrac{\sigma }{G} = 10^{-5}$

Cable creep is now the controlling creep mode, which entails tension-driven atom diffusion along grain borders to elongate grain along the stress axis, a process known as grain-boundary diffusion. Cable creep is more common in fine-grained materials. As a result, the engineer's advice would succeed in this case. The affinity for cable creep is reduced when the grain size is increased.

c)

From the map of creep mechanism for $\dfrac{\sigma}{G} = 10^{-3} \ and \ \dfrac{T}{Tm} = 0.5$