http://www.aviationtoday.com Aviation Today en-us 2013 Sat, 25 May 2013 19:45:36 EDT Honda Aircraft Co. completed the first flight of its FAA-conforming HondaJet light business jet, the company announced Dec. 21. The airframer said the flight is a "significant step in Hondas aerospace program leading to delivery of aircraft in 2012." The first conforming HondaJet lifted off Dec. 20... http://www.aviationtoday.com/rw/what_the_experts_are_saying/rotorcraft_aerodynamics/Video-Army-AFDD-Director-Spivey-on-Helicopter-Aerodynamics_76767.html Thu, 12 Jul 2012 0:00:00 EDT Question: Why does a helicopter with rotors turning clockwise (e.g., Lama or Mil Mi-8) gain height in a steady spot turn to right and lose height in a left spot turn? Answer: In helicopters with a conventional main/tail rotor, any increase in pedal application that opposes the torque effect of the main rotor... http://www.aviationtoday.com/rw/what_the_experts_are_saying/rotorcraft_aerodynamics/Height-Variations-in-RightLeft-Spot-Turns-with-Rotors-Turning-Clockwise_75109.html Tue, 29 Nov 2011 0:00:00 EST Question: Why does the Eurocopter AS350 AStar flight manual list a different Vne (never exceed speed) for “power-on” vs. “power-off” flight? It lists 155 kts at SL, Std. Day power-on, and 125 knots at SL, Std. Day power-off. Shouldn’t the maximum speed of the aircraft be the... http://www.aviationtoday.com/rw/what_the_experts_are_saying/rotorcraft_aerodynamics/Velocity-to-Never-Exceed-VNE-Eurocopter-AS350_75110.html Tue, 29 Nov 2011 0:00:00 EST Question: Could you please address the issue of loss of tail-rotor effectiveness, specifically in a Bell 206. I would like to know why (on some helicopters) when the engine does not have sufficient power in high-power flight conditions the main rotor speed will slow and the aircraft will then start a slow... http://www.aviationtoday.com/rw/what_the_experts_are_saying/rotorcraft_aerodynamics/Loss-of-Tail-Rotor-Effectiveness-Bell-206_75112.html Tue, 29 Nov 2011 0:00:00 EST Question: How would you calculate the rotor downwash velocity (in mph), specifically for the Hughes 500? Answer: Following the advice of Mr. Newton, we know that our rotor must produce an upward force, or thrust, equal to our helicopter’s weight if we are to hover. Since Force = (Mass) x... http://www.aviationtoday.com/rw/what_the_experts_are_saying/rotorcraft_aerodynamics/Calculating-Rotor-Downwash-Velocity_75113.html Tue, 29 Nov 2011 0:00:00 EST Question: What happens to my old certification? Answer: While the expiration date on your certificate may be much later, on July 1, 2012, previous versions of AS9100, AS9110 and AS9120 will universally expire and will cease to be valid. Prime contractors such as Boeing will cease to recognize certifications... http://www.aviationtoday.com/rw/what_the_experts_are_saying/process_certifications/What-Happens-to-an-Expired-Certification_75111.html Tue, 29 Nov 2011 0:00:00 EST Question: When do I have to have my audit completed to revision C? Answer: All customers must have their transition audit completed by July 1, 2012 as mandated by the International Aerospace Quality Group (IAQG), the group primarily responsible for the development of AQMS standards and their associated... http://www.aviationtoday.com/rw/what_the_experts_are_saying/process_certifications/Revision-C-Audit-Deadline_75114.html Tue, 29 Nov 2011 0:00:00 EST Question: What happens if I am not ready for my audit this year? Answer: While the IAQG transition plan requires that all audits starting July 1, 2011 be to the 2009 version of the AQMS standards (e.g. AS9100, Rev. C), organizations that are not ready for their transition audit but are due for audits at or... http://www.aviationtoday.com/rw/what_the_experts_are_saying/process_certifications/What-Happens-if-I-Am-Not-Ready-for-Audit-This-Year_75115.html Tue, 29 Nov 2011 0:00:00 EST Question: Good afternoon, We have recently seen the certification of the R66 to new FAA standards. I have two questions: How could they certify the blades to lightning strikes since the technology is identical to that of the R44 and R22, which have had a history of bonding issues for years with normal... http://www.aviationtoday.com/rw/what_the_experts_are_saying/nvg_certifications/R66-Certification_75102.html Tue, 29 Nov 2011 0:00:00 EST Question: What is the difference between Class “A” and Class “B” modifications and Class “A” and Class “B” goggles? Answer: Let's begin with discussing the fundamental difference between Class A and Class B NVGs. A Class A NVG refers to a NVG with a visible... http://www.aviationtoday.com/rw/what_the_experts_are_saying/nvg_certifications/Class-A-Class-B-NVGs_75106.html Tue, 29 Nov 2011 0:00:00 EST