You often experiment with everyday materials around you, trying to create new and unique items. You enjoy designing and creating
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Answer:
The major effects of ice accretion on the aircraft is that it disturbs the flow of air and effects the aircraft's performance.
Explanation:
The ice accretion effects the longitudinal stability of an aircraft as:
1. The accumulation of ice on the tail of an aircraft results in the reduction the longitudinal stability and the elevator's efficacy.
2. When the flap is deflected at with no power there is an increase in the longitudinal velocity.
3. When the angle of attack is higher close to the stall where separation occurs in the early stages of flow, the effect of ice accretion are of importance.
4. When the situation involves no flap at reduced power setting results in the decrease in aircraft's longitudinal stability an increase in change in coefficient of pitching moment with attack angle.
Answer:
(a) 2.5 ksi
(b) 0.1075 in
Explanation:
(a)
Making the subject then
where is the stress and
is the strain
Since strain is given as 0.025% of the length then strain is
Now substituting E for then
(b)
Stress, making A the subject then
where d is the diameter and subscripts o and i denote outer and inner respectively.
We know that where t is thickness
Now substituting
But the outer diameter is given as 2 in hence
As already mentioned,
Answer:
The claim is valid.
Explanation:
Let assume that heat pump is reversible. The coefficient of performance for the heat pump is:
The claim is valid as real heat pumps have lower coefficients of performance.