Rubber-Engine Sizing Online Exam Quiz
Rubber-Engine Sizing GK Quiz. Question and Answers related to Rubber-Engine Sizing. MCQ (Multiple Choice Questions with answers about Rubber-Engine Sizing
A general aviation single engine aircraft has gross weight of 2800lb. The aircraft has maximum speed of 130mph. Determine the approximated value of empty weight fraction if, aspect ratio AR is 9, wing loading is 15 and power loading is 12.
Options
A : 0.5476
B : 0.6457
C : 0.8962
D : 0.9028
A jet fighter is designed to operate at maximum mach of 2.0. Which of the following is approximated value for empty weight fraction if rubber engine sizing is used? Given, W0 = 20000lb, AR = 5, thrust loading T.L. = 0.6 and wing loading W.L. is 25.
Options
A : 0.8109
B : 0.8532
C : 0.526
D : 0.3562
An aircraft is climbing and accelerating to reach the cruise mach number of 0.75. If aircraft is accelerating from 0.1M then, what will be the mission segment fuel fraction for this mission?
Options
A : 0.9821
B : 0.9258
C : 0.5289
D : 0.28958
As weight varies, rubber engine ___
Options
A : can be scaled accordingly
B : cannot be scaled accordingly
C : remain fix
D : will change as half always
For a given rubber engine, determine fuel burn at combat if combat time is 2.5min.
Options
A : 2.5*C*T unit
B : 2.5
C : 2.89 unit
D : 2.63 kg
For mission with payload drop, the take-off gross weight W0 is given by __
Options
A : W0 = Wcrew + Wdropped payload + Wfixed payload + Wfuel + Wempty
B : W0 = Wcrew + Wdropped payload + Wfixed payload + Wfuel
C : W0 = Wcrew + Wdropped payload + Wfixed payload + Wempty
D : W0 = Wcrew + Wdropped payload + Wfuel + Wempty
If supersonic aircraft has fuel fraction of 0.937 as climb and accelerating segment fuel fraction then, find the cruise mach number. Consider aircraft is accelerating from 0.1M.
Options
A : 2
B : 30.5
C : 5
D : 1.4
The rubber engine can be sized for any thrust so we can have desired thrust loading.
Options
A : TRUE
B : FALSE
C : -
D : -
What is rubber engine?
Options
A : Engine can be rubberized for sizing
B : Engine made from rubber
C : Engine is natured rubber
D : High strength rubber engine
Which of the following is incorrect?
Options
A : Uncambered wing lift curve is not same as that of the Cambered
B : Stick free and stick fixed are same
C : Lift is not always same as weight
D : Thrust required is not always same power
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