rbp
  • Member for 7 years, 4 months
  • Last seen more than a month ago
Do turbo prop airliners generate thrust using the propeller and compressed air or just the propeller?
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The PT6A provides approximately 10% extra thrust from exhaust gas http://www.turbokart.com/about_pt6.htm

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What is the typical fatigue life of a helicopter airframe?
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The Robinson R-22 and R-44 helicopters are life limited to 2,200 hours or 12 years: The complete airframe, including rotor systems, drive system, control system, and fuselage, must be overhauled ...

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Is this a reasonable way of thinking about an auto-rotation?
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Those are exactly the 4 phases: entry -- lower the collective to keep the RPMs up auto-rotation flight -- keep the needle at the required RPM. 90% will give you a longer glide, but the horn will be ...

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How can reducing power too quickly on a piston engine damage it?
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In turbocharged engines, the impeller spins very fast (25,000+ RPM), has very small tolerances, and operates at EGT temps (since the compressor is driven by the exhaust gas). According to the M20M (...

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At a constant power setting, does TAS change with altitude?
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The true airspeed (TAS) is determined by adjusting the indicated airpseed (IAS) for altitude and outside air temperature (OAT). Faster small airplanes have a TAS calculator built in to the ASI. To ...

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What determines crosswind limits?
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For Part 23 airplanes, the answer is: FAR §23.233: Directional stability and control. (a) A 90 degree cross-component of wind velocity, demonstrated to be safe for taxiing, takeoff, and landing must ...

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KIBM RNAV (GPS) 10 -- did I find a charting error, or what is the TERPS rationale for this?
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As UFO suggested in the comments above, the values come from the Tables in TERPS. The reason why the visibility is greater for Category A and B is because in the typical "dive and drive" non-...

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Piloting as a perishable skill - what skills go first and how to self-assess and mitigate skill loss?
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its says "aircraft," so I will answer for the categories and ratings I hold: Airplane Single Engine Land/Sea -- landings Rotorcraft/helicopter -- autorotations Gliders -- tow rope breaks Tailwheel -- ...

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Can an aircraft owner legally replace an oil quick drain valve?
-1 votes

Just replace the drain at the shop in front of the A&P

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What visibility and cloud clearances are required for airplanes conducting visual approaches?
-1 votes

What visibility and cloud clearances are required? VFR, as per 91.129, 91.130, or 91.131 for the various classes of airspace

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What frequency should be used for air-to-ground communication other than airport ground operation?
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Some people use "fingers" 123.45 for non-standard radio communications. I don't think it conflicts with any existing radio stations and its legality is in in doubt. Sometimes you will hear on a busy ...

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How does the dihedral angle work?
-5 votes

This is a very exaggerated diagram of a fuselage with dihedral wings. When the plane is flying normally (top), both wings produce the same lift vectors. When the airplane is disturbed in the roll ...

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