1⟩ What is yawing motion?
yawing motion means the side ways motion aircraft about the
lateral axis.in otherwords side to side motion of aircraft.
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34 Aeronautical Engineering Questions And Answers
2⟩ How the shockwave produced in aerofoil,and actually what happen that region?
Shaock Only at supersonic speed
Message(about aircraft prasence downstream) waves go
upstream at the speed of sound.
But Aircraft goes more than the speed of sound.(supersonic)
Before upstream air get the message about aircraft prasence,
air encouter the aircraft.
No time to adjust the airflow,Hence Shock!
3⟩ Can a carbon dioxide gas use as fuel source?
Due to new and utterly inefficient techniques, carbon
dioxide can be broken down into oxygen and carbon monoxide.
this carbon monoxide can then be used to produce plastics
and gas.
4⟩ What is a liquid metal?
Mercury
5⟩ 1)what distance should be maintained between networking (data) cable & power cable if both cables are run in a seperate condute pipe parallaly?2)what happens if networking cable & power cable run parallel to each other, eventhough they run in a seperate condute pipes?
POWER CABLE IS HAVING SOME HIGH MAGNITUDE, IF THE SIGNAL
CABLE YOU ARE PLACING NEARER TO THE POWER CABLE, DUE TO THE
MAGNITUDE (MITUAL INDDUCTANCE) THAT DATA CABLES ARE GETTING
SOME SIGNAL FROM THE POWER CABLE.YOU REMEMBER THAT DATA
CABLE SIGNAL FROM 1.5 VOLT TO 12 V HIGHLY SENSETIVE.THAT
MAGNITUDE ENOUGH TO GENERATE THE TRIGGER VOLTAGE ON DATA
CABLE.THEN SOME WRONG FUNCTION WILL HAPPEN INTO THAT
RELATER CIRCUITS.
6⟩ Why airline prefer beautiful girls for hostesses?
There are different kind of people travel in a airlines we dnt know about them? sum people may act violent normally girls soft nature? so the airlines prefer girls y there prefer a beautiful girls? to impress a customer so airline prefer beautiful girls for hostesses
7⟩ How the vfd is working?
VFD having 3 main section namely Rectifier , DC bus,
Inverter.
by Rectifier input supply AC is converted to DC , In the
section main part is pulse also getting change by no. of
Diodes.
In DC bus section having capacitor , in this capacitor the
power is getting store.
In Inverter section the DC is converted to AC and the supply
8⟩ HOW WE WANT 2 STUDY AERONAUTICAL?
aeronautical is not the thing to study it's the thing to
understand the concept that how to fly:-)
obvioulsy in every college aero students are the best one's
in all disciplines
9⟩ Are thermal protection systems of space crafts commonly composed of one panel or a collection of smaller tiles?
Thermal protection system of space crafts will be of tiles
which are made up of ceramics and ceramic composites to with
stand thermal shocks and to avoid cracks it is used as tiles.
10⟩ Does not simplification of complex honeycomb designed for thermal protection system of are usable launch vehicles jeopardize the accuracy of results?
It jeopardize the accuracy but it also has some advantages
but cannot be used due to its inaccuracy.
11⟩ Rotation of dc shunt motor is revers by using 2 methods,which method is best and why?
reversing the armature terminal is better & applied in
practice.this is becoz of the following drawbacks in field
reversing method.
* high voltage build-up during reversing the field terminal
which is high enough to puncture the insulation of field
coil.
* high flash-over will occur.
* during reversal, the armature current should be limited
to the rated value,otherwise it will draw twice the time of
starting current.we can insert the external resistance to
limit the current while reversing the armature
terminal.whereas,in field reversal we cannot give any
provision to limit armature over current.
12⟩ How can we draw design the airfoils using NACA series?
simply download naca series cordinates its available on net ..start plotting..tat coordiantes,,,and also templates all available
13⟩ What is ram jet?
It is a jet engine with no moving parts, only fuel spayed
and burned.
14⟩ Why refrigeration is done inside aircraft, and why aircraftbody is made of aluminums?
This is the combined effect low pressure & speed of plane in
sky. Body of aircraft is made up of aluminums due to its
good tensile strength & good conductor.
15⟩ What type of bearing used in bell helicopters?
Elastomeric bearings that Elastomeric bearings are bearings
constructed from a rubber type material and have limited
movement that is perfectly suited for helicopter
applications.
16⟩ What is the difference between stress and pressure?
when the external force is applied on the elastic body,the
body will deform from its original position.there will be an
internal resistance force which will act opposite to the
external force with the same magnitude.the internal
resistance force per unit area is called stress.....
pressure is the force which will act normal to the surface
and all over the surface..........
17⟩ Which is the high thrust producing jet engine?
ramjet engine
18⟩ What is the highest temperature the space shuttleundersurface experiences during its mission?
Under surface of the space shuttle will experience above
2300'c at the time of re-entering.
19⟩ Explain What will be the responsibility of the spacecraftoperations, dynamics and controls?
People working on these areas as a aerospace engineers
should have familiarity and exposure to NASTRAN and MATLAB
with knowledge on space environment and modeling of flexible
dynamics. These aerospace engineers will be responsible to
work in the areas of structural control, momentum control,
line of sight (LOS), spacecraft mission design, control of
space boards payloads, operational engineering.
20⟩ What do you understand by Aerodynamics/performance analysis?
Aerodynamics / performance analysis in military programs
include responsibility like analyzing aerodynamics impacts
which effects from external modifications, developing
mission profiles based on requirements from the customer,
performance data of the mission which includes take off and
landing details, en route and mission data performance.
Analyze the configurations using the dynamics which are
fluid and computational. Additional task may include support
for wind tunnel planning for test flight. Documentation,
test support, data analysis should be done on regular basis.
Co ordination of aerodynamics with multi discipline teams
and data should be provided for support flight management
system or mission planning software.
