Weight 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...
View ArticleHow do cruise speeds change with altitude (standard piston prop)
Ignoring all other factors (winds, time to climb, practical considerations like O2, etc…), how can you relate the maximum cruise speed to the cruise altitude for a normally aspirated (non-turbo),...
View ArticleWhy doesn’t the governor correct for RPM drop during a magneto check?
Why doesn’t the governor correct for RPM drop during a magneto check? single engine constant speed I’m searching for more of a explanation than a one sentence answer, however any feedback is...
View Article“Best forward speed until 5 miles” from where?
When flying an ILS approach the approach controller requests “maintain maximum forward speed until 5 miles out.” What does that mean? Five miles from where? The ILS DME? ( FAF at 6 miles… so a mile...
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