Stall Speed
I am having trouble visualizing stall speed (in regards to CG), and I am hoping someone can help me. I know that a stall can occur at ANY AIRSPEED or ATTITUDE as long as the critical angle of attack is...
View ArticleDensity Altitude and stall speed
Will high density altitude increase stall speed? I would think that since lift is reduced due to a decrease in air density, one would need to increase their speed in order to maintain adequate lift....
View ArticleWind speed calculation
Sir, I want to know wind speed calculation of aircraft. what is the sensor used and how it is calculated?? Regards Sukesh sukesh.ap@gmail.com
View ArticleSpeed time distance
An aircraft traveling 100nm at 100kts completes the trip in 1 hour. Now if we add or subtract 20kts to the airspeed why does the time not change the same. For example, at 80kts it would take the...
View ArticleWhy doesn’t the AOA affect the stall speed?
Why doesn’t the AOA affect the stall speed? With the higher AOA, the wing can geneate more lift if the airspeed is the same. That means when the AOA is higher, the wing need lower airspeed to generate...
View ArticleWill a plane traveling faster glide farther than a plane traveling slower?
If there was complete engine failure (and all other things being equal), would a passenger jet traveling at 600 mph when the engines stopped glide farther than a plane traveling at 400 mph when the...
View ArticleWill a plane traveling faster glide farther than a plane traveling slower...
All other things being equal, if there was complete engine failure in a passenger jet, would a plane traveling 500 mph glide farther than a plane traveling 400 mph? There is logic to assuming the...
View ArticleWeight increase resulting in a stall speed increase
As weight of the airplane increases the stall speed does increase. Due to the greater weight, a higher angle of attack must be maintained to produce the additional lift to support additional weight in...
View ArticleWould best glide ratio speed vary with total load in aircraft?
The POH has a stated best glide speed…. best glide ratio. Important for that hope-never-have-to estimate as to how far I can glide power off from the AGL I`m at. On the face of it without digging into...
View ArticleDifference Between Vx and Obstacle Clearance Speed
The C172S publishes an obstacle clearance speed of 56 kts at max weight for short-field takeoffs. Why would the obstacle clearance speed be different from Vx?
View ArticleWhy Do Constant Speed Prop Airplanes Have Manifold Pressure Gauges? (91.205)
As far as I know, 91.205 only requires manifold pressure gauges for aircraft with high altitude engines, which I understand to be engines with turbo/superchargers. Yet, every controllable pitch prop...
View ArticleApproach speed category
For the approach chart,the approach speed category have cat A B C D ,and I know that speed is base on 1.3 Vs0 at the ,maximum certificated landing weight,but why is 1.3 Vs0 not 1.4 or 1.5?
View ArticleRefusal speed and Go No Go Speed Difference
What is the difference between Refusal speed and Go No Go speed? If my aircraft lift off speed is 100 kts and refusal 125 kts. Now after lift off critical emergency like fire light or engine flame out...
View ArticleSpeed steep spiral
Does anybody have a rule of thumb for steep spirals speed. The Airplane Flying Handbook states: After the throttle is closed and GLIDING SPEED is established, a gliding spiral should be started and a...
View ArticleConstant Speed VS Full-Feathering Propellers
I found constant speed and full-feathering props are not acting in the same way. There must be reasons since making both systems in the same way would save manufacturing cost but I couldn’t find why....
View ArticleWhat’s the speed limit in a procedure turn?
Just as the question asks, what is the speed limit in a procedure turn? I’ve seen it as both 200 KIAS and 250 KIAS. The sources that say 250 KIAS (from around 1996 when I started my IFR training)...
View ArticleWind direction and speed at different altitudes, day/night.
I am going through questions for the EASA PPL theory exam and there are a few question about the weather which I don’t know how to answer. For example this one: It is midnight at an aerodrome in the...
View ArticleWhy do best glide speed and best angle of climb speed differ?
Good day. Question is why the best glide speed (V_LD) is higher than best angle of climb speed (V_X)? Reason for asking: V_LD is the best lift-to-drag ratio. Both depend on Angle of Attack (via...
View ArticleConstant speed propeller – Engine failure
Hello, My question is: What would happen in a single engine airplane with a constant speed propeller in the event of an engine failure ? What would the governor do with the pich of the propeller an the...
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