120 + Interview Questions in Configuration Layout Considerations in Aircraft Design Page 3 InterviewSolution

101.	What do you mean by crashworthiness?(a) Capability of structure to protect against impacts and crash loads(b) Capability of an aircraft to stay in cruise(c) Vulnerability to radar detection(d) Special aerodynamic lift improvementThis question was addressed to me during an online interview.My question is from Configuration Layout topic in chapter Configuration Layout Considerations of Aircraft Design
Answer» Right answer is (a) Capability of structure to protect against impacts and CRASH loads For EXPLANATION: Capability of structure to protect against impacts and crash loads can be TERMED as crashworthiness design. WHETHER the AIRCRAFT will stay in cruise or not this will be decided by operating environment.

Discussion

102.	Location of landing gear should be such that _____________(a) they wouldn’t rip open fuel tanks at the time of crash(b) they would rip open fuel tanks(c) they must rip open fuel tank during crash(d) with less crashworthinessThis question was posed to me in a national level competition.This question is from Configuration Layout in chapter Configuration Layout Considerations of Aircraft Design
Answer» Right CHOICE is (a) they wouldn’t rip open fuel tanks at the TIME of crash Explanation: Gears should be PLACED such that they would not rip open fuel tank at the time of crash. Location should be selected by CONSIDERING crashworthiness as WELL. If location is not adequate then, it will damage to crashworthiness properties of our design.

Discussion

103.	Which of the following is incorrect?(a) Designer should not worry about crashworthiness(b) Designer should worry about crashworthiness(c) Careful and adequate design can improve crashworthiness(d) Redundant system can be used during failureI had been asked this question in an online interview.Question is taken from Configuration Layout in chapter Configuration Layout Considerations of Aircraft Design
Answer» CORRECT option is (a) Designer should not WORRY about CRASHWORTHINESS Explanation: Designer should worry about crashworthiness of design. Crashworthiness design can be adopted in ORDER to IMPROVE safety. We can use a redundant system to improve the crashworthiness.

Discussion

104.	Aircraft production cost is related to _____________(a) weight, size, material, etc(b) weight only(c) size only(d) material onlyThe question was asked during an interview.My question is taken from Configuration Layout in section Configuration Layout Considerations of Aircraft Design
Answer» Right choice is (a) weight, size, material, etc Best EXPLANATION: Aircraft PRODUCTION COST is based on its weight, material used, its size and volume etc. Production cost is affected by NUMBER of PROCESSES, sub-assembly etc. Only weight is not responsible for cost.

Discussion

105.	An aircraft component has presented area 6 ft^2 with Pk as 1.0. Find vulnerable area.(a) 6ft^2(b) 82ft^2(c) 7ft^2(d) 72ft^2The question was posed to me in an interview for job.This interesting question is from Configuration Layout topic in section Configuration Layout Considerations of Aircraft Design
Answer» RIGHT CHOICE is (a) 6ft^2 To elaborate: Given, area a = 6ft^2, PK = 1.0 Vulnerable area = aPk = 61 = 6ft^2.

Discussion

106.	Visual detection is based on?(a) A/C size, color, etc(b) Only size(c) Only weight(d) Only colorI got this question in a national level competition.I would like to ask this question from Configuration Layout Considerations in division Configuration Layout Considerations of Aircraft Design
Answer» Correct answer is (a) A/C SIZE, color, etc To elaborate: Visual detection is affected by size, color etc. How much wider or longer or big is my aircraft? Will AFFECT its visual detection. Color of my aircraft with respect to BACKGROUND will affect visual detection as WELL.

Discussion

107.	Visual detection is one of the important parameters for an aircraft.(a) True(b) FalseThe question was asked during an interview for a job.This intriguing question comes from Configuration Layout Considerations in section Configuration Layout Considerations of Aircraft Design
Answer» Right ANSWER is (a) True Explanation: The human eye can locate an aircraft due to its VISUAL aspects. Visually, contrails can be spotted easily and it will be the indication of an aircraft. HENCE, visual detection is ONE of the important parameters.

Discussion

108.	Which of the following is correct?(a) If possible, designer should omit unnecessary part to reduce cost(b) Lift is always same as weight of the aircraft(c) Producibility concern should not be used at all(d) Only forging process will affect costThis question was addressed to me in my homework.Query is from Configuration Layout in chapter Configuration Layout Considerations of Aircraft Design
Answer» Right CHOICE is (a) If possible, designer should omit UNNECESSARY part to reduce COST Easiest explanation: By omitting unnecessary parts, we can reduce WEIGHT, material etc. to reduce the weight. Weight is not always same as lift. Producibility concern is used to reduce overall cost. Forging only will not affect cost. Cost is BASED on weight, materials etc.

Discussion

109.	What is the Major Key parameter of maintainability?(a) Accessibility(b) Survival(c) RCS(d) VulnerabilityI had been asked this question in an international level competition.Query is from Configuration Layout topic in division Configuration Layout Considerations of Aircraft Design
Answer» Right answer is (a) Accessibility For explanation: Maintainability will be affected by accessibility. SURVIVAL is characteristic of vulnerability CONSIDERATION. RCS is a term used in radar detection. Vulnerability is BASED on combat DAMAGE.

Discussion

110.	Best access should be given to components which require often maintenance.(a) True(b) FalseI have been asked this question by my college director while I was bunking the class.This interesting question is from Configuration Layout topic in section Configuration Layout Considerations of Aircraft Design
Answer» Correct option is (a) True Easiest explanation: ACCESSIBILITY is defined as the required effort DONE in order to REACH a particular component. It shows WHETHER the component is easily reachable or not. Hence, if a component REQUIRES often maintenance then, we should provide best access to that component.

Discussion

111.	An aircraft does not emit any IR radiation.(a) True(b) FalseThe question was asked by my college director while I was bunking the class.My question is from Configuration Layout Considerations in section Configuration Layout Considerations of Aircraft Design
Answer» Right choice is (b) False To explain I would say: IR is an electromagnetic wave. An INFRARED radiation is not visible to a human named eye. Any BAY which has warmth will GENERATE infrared radiation. AIRCRAFT will emit infrared radiation.

Discussion

112.	Higher contrast between different parts of aircraft will _____________(a) increase detectability(b) decrease(c) increases twice times always(d) always decreases by two unitsI had been asked this question in an interview for job.I want to ask this question from Configuration Layout Considerations topic in chapter Configuration Layout Considerations of Aircraft Design
Answer» Correct option is (a) increase DETECTABILITY Explanation: Contrast between two parts of an AIRCRAFT will increase visual detectability. Higher contrast makes it easy to be SEEN visually. We can reduce contrast so that we can IMPROVE visual DETECTION of the aircraft.

Discussion

113.	Vulnerable area will be same for each and every aircraft.(a) True(b) FalseI have been asked this question in quiz.This intriguing question comes from Configuration Layout in chapter Configuration Layout Considerations of Aircraft Design
Answer» Right option is (a) True To EXPLAIN I would SAY: Vulnerable area will not be the same for each aircraft. EVERY aircraft is sized based on their mission requirement. Size of the aircraft PROBABILITY of hit will be different for each aircraft as WELL.

Discussion

114.	In order to improve vulnerability consideration, we can use _________(a) redundant components(b) high lift device(c) vortex generator(d) we cannot improve itI got this question in a national level competition.I want to ask this question from Configuration Layout in portion Configuration Layout Considerations of Aircraft Design
Answer» Right choice is (a) redundant components To ELABORATE: Redundant components in SIMPLE words are additional components which can be used at the time of EMERGENCIES or failure of the component. For example, redundant of hydraulic system, electric system, etc. can improve survivability. HENCE, by using redundant component we can improve the vulnerability of our design.

Discussion

115.	RCS of flat surface can be reduced by _____(a) providing some slope to flat surface(b) increasing flat side length(c) using twice length of the flat side(d) provide more rcs to flat sideI got this question in a national level competition.Asked question is from Configuration Layout Considerations topic in section Configuration Layout Considerations of Aircraft Design
Answer» Correct answer is (a) providing some slope to flat SURFACE For explanation I would SAY: Flat SURFACES offer highest rcs possible. Now, to reduce it we can provide some slope to flat side of the surface. This will reduce the amount of EMW being RETURNED by the flat side. If we increase the flat side length then, it will not reduce rcs of the flat surface.

Discussion

116.	RCS stands for __________(a) radar cross section(b) radar cone shape(c) radio conic shape(d) radio cruise and stallI have been asked this question during an interview.My query is from Configuration Layout Considerations topic in chapter Configuration Layout Considerations of Aircraft Design
Answer» Correct choice is (a) RADAR cross section Explanation: RCS is ACRONYM of ‘radar cross section’. RCS of an aircraft will DIRECTLY impact the radar detectability of the aircraft. RCS is usually measured in DECIBEL square meters or dBsm.

Discussion

117.	In general, an IR detector will respond to?(a) Irradiance(b) Rotational fluid(c) Rotational force(d) RCSThe question was asked in an online quiz.This intriguing question originated from Configuration Layout Considerations in section Configuration Layout Considerations of Aircraft Design
Answer» The correct option is (a) Irradiance For explanation I would say: Typically, all it detector will RESPOND to irradiance. Irradiance is area density of the power. Hence, an infrared detector will respond to the density of the RADIANT power. RCS is MEASURE of radar DETECTION.

Discussion

118.	Let’s consider a propeller aircraft propeller diameter of 24 feet then, what would be the minimum value of clearance that is required for safe operation of propeller typically?(a) 6ft(b) 8ft(c) 10ft(d) 20ftThe question was asked during an interview for a job.My question comes from Configuration Layout Considerations topic in division Configuration Layout Considerations of Aircraft Design
Answer» Correct answer is (a) 6FT To explain: GIVEN DIAMETER d = 24ft Typical MINIMUM CLEARANCE = d/4 = 24/4 = 6ft.

Discussion

119.	Tight internal packaging will ease the process of routing.(a) True(b) FalseThe question was posed to me in an online interview.This interesting question is from Configuration Layout topic in section Configuration Layout Considerations of Aircraft Design
Answer» The correct option is (b) False To explain I would SAY: Tight internal packaging will make routing complex. Hence, to EASE the routing and COMPONENTS installation we should avoid tight internal packaging. Routing can be more simplified by USING the proper routing tunnel.

Discussion

120.	Which of the following can be considered as the worst feature of an aircraft in terms of maintainability?(a) Requirements of removing number of major structural elements(b) Easily reachable parts(c) Easily accessible parts(d) More accessibility is provided for componentsI have been asked this question in homework.This is a very interesting question from Configuration Layout topic in portion Configuration Layout Considerations of Aircraft Design
Answer» The correct choice is (a) Requirements of removing number of major structural elements The explanation is: Easily accessible and REACHABLE parts are PRIMARY requirement of maintainability considerations. Accessibility directly affects the effort and maintainability of an AIRCRAFT. If a design requires removal of major structural elements to access the component then, it is considered as the worst design based on maintainability.

Discussion

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Aircraft production cost is related to _____________(a) weight, size, material, etc(b) weight only(c) size only(d) material onlyThe question was asked during an interview.My question is taken from Configuration Layout in section Configuration Layout Considerations of Aircraft Design

Visual detection is based on?(a) A/C size, color, etc(b) Only size(c) Only weight(d) Only colorI got this question in a national level competition.I would like to ask this question from Configuration Layout Considerations in division Configuration Layout Considerations of Aircraft Design

Visual detection is one of the important parameters for an aircraft.(a) True(b) FalseThe question was asked during an interview for a job.This intriguing question comes from Configuration Layout Considerations in section Configuration Layout Considerations of Aircraft Design

What is the Major Key parameter of maintainability?(a) Accessibility(b) Survival(c) RCS(d) VulnerabilityI had been asked this question in an international level competition.Query is from Configuration Layout topic in division Configuration Layout Considerations of Aircraft Design

An aircraft does not emit any IR radiation.(a) True(b) FalseThe question was asked by my college director while I was bunking the class.My question is from Configuration Layout Considerations in section Configuration Layout Considerations of Aircraft Design

Vulnerable area will be same for each and every aircraft.(a) True(b) FalseI have been asked this question in quiz.This intriguing question comes from Configuration Layout in chapter Configuration Layout Considerations of Aircraft Design

RCS stands for __________(a) radar cross section(b) radar cone shape(c) radio conic shape(d) radio cruise and stallI have been asked this question during an interview.My query is from Configuration Layout Considerations topic in chapter Configuration Layout Considerations of Aircraft Design

In general, an IR detector will respond to?(a) Irradiance(b) Rotational fluid(c) Rotational force(d) RCSThe question was asked in an online quiz.This intriguing question originated from Configuration Layout Considerations in section Configuration Layout Considerations of Aircraft Design

Tight internal packaging will ease the process of routing.(a) True(b) FalseThe question was posed to me in an online interview.This interesting question is from Configuration Layout topic in section Configuration Layout Considerations of Aircraft Design