Principles of Flight (POF)
Principles of Flight FS 15 Klasse:AV14 Dozent:Manfrian Weiteres Lernmaterial unter: www.tinyurl.com/av14fs15
Principles of Flight FS 15 Klasse:AV14 Dozent:Manfrian Weiteres Lernmaterial unter: www.tinyurl.com/av14fs15
Kartei Details
| Karten | 126 |
|---|---|
| Lernende | 127 |
| Sprache | English |
| Kategorie | Technik |
| Stufe | Universität |
| Erstellt / Aktualisiert | 29.05.2015 / 14.04.2024 |
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Definition of Pressure
Pressure is the Force perpendicular to a surface per area
Pressure at sea level \(p_s =101325 N/m^2\)
Definition of density
Density is mass contained in a volume divided by that volume
Density at Sea level \(\rho_s=1.225 kg/m^3\)
0 Grad Celsius in Kelvin
273.15
speed is a ....
scalar
velocity is a .....
vector
A flow is incompressible if
\(V< ...m/s\)
100 m/s
What is an isentropic flow
An isentropic flow is adiabatic (no heat exchange) and reversible (no friction or other dissipative effects, production of entropy)
what is adiabatic
a prozess in which no heat is added or taken away
what is a reversible process
a process in which no entropy is produced (impossible)
A flow is incompressible if:
\(V< M....\)
Mach 0.3
Draw a converging nozzle that starts with sub sonic flow and ends with supersonic flow
.
In a stream tube with M< 1.0:
to accelerate the flow the crosssection Area must ....
decrease
In a stream tube with V> M 1.0:
to accelerate the flow the crosssection Area must ....
increase
In our course we asume that the flow through a sound wave is ....
if M=1.0 the flow is....
the flow is sonic
Normal shockwave:
What changes across the shockwave
Normal shockwave:
Across the shock wave the Mach number ....
Normal showck wave:
Across the shock wave the static pressure ...
Normal shockwave:
Across the shock wave the total pressure ...
The total energy of a air molecule across a shockwave, considering insentropic flow, does ....
Which shock wave is oblique
Which one is an expansion wave
Fly analogy
The fly hits your skin in the car, this resembles ....
Fly analogy
Your standing outside the fly flies out of the window of a bypassing car and hits your skin, this resembles ....
\(p_{total}-p_{static}=p_{...} \)
\(p_{total}-p_{static}=p_{dynamic} \)
A pitot-static probe for itself measures... and ....
Indicated Airspeed is calculated from ....
the pressure difference between the static port and the pitot tube, and isn't corrected in any ways
Calibrated Airspeed is ... corrected by the ...
Indicated Airspeed, Position and instrument error
Equivalent Airspeed is ... corrected by ...
Calibrated Airspeed, Compressibility
True Airspeed is ..., corrected by ...
Equivalent Airspeed, Density
Normal shockwave:
Across the shockwave the static temperature...
Normal shockwave:
Across the shockwave the total temperature...
The pressure through the boundary layer in a direction perpendicular to the surface is...
The boandary layer thickness ... as the flow moves over a body
The shear stress of a laminar boundary layer is ... than that of a turbulent one.
This profile encourages ...
This profile encourages a ...
Under the same flow conditions a turbulent boundary layer will be ... than a laminar boundary layer
The point on a wing where the boundary layer becomes turbulent is called ...
In incompressible flow measurement, the density error is defined as the difference between...
