Questions tagged [principles-of-flight]

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ATPL - Principles of Flight - Question regarding propeller pitch

In my ATPL books i've learned that for a variable pitch propeller, it is better to have a fine pitch for take-off (higher RPM) and a coarse pitch for cruise (lower RPM). In this question taken from ...
1
vote
2answers
143 views

Why do Wingtip Vortices affect the upwash ahead of the aerofoil?

I understand that wingtip vortices increase the downwash aft of the aerofoil and the theory that they will alter the effective airflow angle, reducing effective angle-of-attack, with the total ...
1
vote
2answers
267 views

Why is airspeed different in climbs and descents although the AoA doesn't change?

Here are the background facts: This excercise has the objective to familiarise the student with the slow flight characteristics. The steps are: 1)Establish straight and level, 90% RPM, 15 units ...
2
votes
3answers
325 views

Has using engine exhaust blown onto an airfoil ever been tried to make an vtol aircraft?

Has usong engine exhaust blown onto an airfoil ever been tried to make a vertical takeoff and landing aircraft?
1
vote
1answer
624 views

How to calculate the best glide speed if there is none on the POH?

I am studing the POH of Seneca II and could not find the Best Glide Speed. Where can I get this information from? I thought to multiply Vs clean for 1.4 to get an approximate result but I am not sure ...