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1. Mathematics
2. Physics
3. Electrical fundamentals
4. Electronic fundamentals
5. Digital techniques / Electronic instrument systems
6. Materials & hardware
7. Maintenance practices
8. Basic aerodynamics
9. Human factors
10. Aviation legislation
11. Aeroplane aerodynamics, structures and systems
12. Helicopter aerodynamics, structures and systems
13. Aircraft aerodynamics, structures and systems
14. Propulsion
15. Gas turbine engine
17. Propeller
Last comments in Q&A
murrayfaber left comment on Skap92's question:
Wouldn't the effect of putting flaps down cause the pressure distribution of the wing to move rearward (i.e. centre of pressure moves rearward ) causing the nose to be pushed down which will tend to decrease the angle of attack??

3g_nitro left comment on rizkaramat's question:
Similar to what Chris said but different way of solving:
If 4.5 kW = 90 % then (using ratios)
5 kW = 100%

Then using P = W/T => W=PxT

W = 5000 X 20 = 100kJ

:)

dimky left comment on marcoff's question:
http://www.dmctools.com/store/catalog.asp?PRODUCT_ID=561567&BACK=%2Fstore%2Fcatalog%2Easp%3FKEYWORD%3DAF8

DMC crimping tool with counter, for example. :)

dimky left comment on Kerongeorge 's question:
In high-wing planes, the location of the fuselage (below the wings) causes the relative wind to exert an upward force on the upwind (lowered) wing, therefore helping to return the aircraft to wings-level flight. With low-wing models, the fuselage leads to the relative wind exerting a downward force on the lowered wing, thus exacerbating the condition.

bharatbc left comment on syafinaz9092's question:
There are two famous methods for representing degrees and their fractional parts.
1.Decimal degree method e.g 76.45 degrees
2.DMS(degree minute second) method e.g 167 degrees 46 minutes 47 seconds
As we know that if the sum of the measures of two angles is equals to 180 degrees, the angles are supplementary. To find the supplement of any angle, subtract the angle from 180 degrees.
first write the 180 degrees in the form of degree minute second as required. 180 degrees=179 degrees 59 minutes 60 seconds (borrow 1 degree from 180 degrees. 1 degree = 60 minutes. again borrow 1 minute from 60 minutes.1 minute =60 seconds) now subtract 13 seconds from 60 seconds i.e 60-13=47 seconds , subtract 13 minutes from 59 minutes i.e 59-13=46 minutes and subtract 13 degrees from 179 degrees i.e 179-13=166 degrees
therefore answer is 166 degrees 46 minutes 47 seconds
To find complement of any angle, replace 180 degrees with 90 degrees and follow same process.
Last finished tests
fraga93 finished 6. Materials & hardware with 66% result.
AndreBongi finished 11. Aeroplane aerodynamics, structures and systems with 100% result.
daniel15_xcrew@yahoo.com finished 4. Electronic fundamentals with 56% result.
AndreBongi finished 11. Aeroplane aerodynamics, structures and systems with 90% result.
janealexis finished 6. Materials & hardware with 50% result.
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