Prof Rogers

Dave Rogers and his 1969 E33A Beech Bonanza.

Technical Flying
by
David F. Rogers

The PDF files have been optimized for screen viewing. In addition, to try to control improper distribution, printing has been inhibited.

Printed copies are available for $2.00/page for the first five (5) pages and $1.00/page for each additional page plus $1.00 shipping and handling within the lower 48. The printed copies will be shipped via USPS Media mail.

All the articles are available for $34.95 plus $4.95 shipping and handling. They will come in a 3-ring binder with a table of contents.

If you want to purchase printed copies, send me an email at dfr at nar-associates.com with Technical Flying in the subject line. Upon receipt, I'll provide an address and you can drop a check or money order in the mail to me.

Sorry about all this but ENJOY the articles, Dave Rogers

Math notes for these papers If you are one of those individuals that is math challenged, please read these very simple math notes. You really do have the background to understand the arguments based on the math in these papers. Try it! (35 pdf file)
Parasite Drag Discusses the results of wind tunnel tests of a Grimes beacon and the practical effects on aircraft performance of the parasite drag generated by the beacon. (116k pdf file)
Elevator Balance Why did Beech use magnesium for the elevator and rudder on the Bonanza? (107k pdf file)
Tip Tank Comparative Flight Test Comparative flight tests results for an E33A Bonanza with and without tip tanks.(64k pdf file).
Flight Test of Atlantic Aero A-36 A level flight performance flight test of the Atlantic Aero A-36. Results show a 10 knot true airspeed increase at 6000 ft and 195 BHP (724k pdf file).
Balanced Fuel Injector Effects on In-Flight Engine Vibration In flight measurement of aircraft vibration levels with and without balance flow fuel (GAMI) injectors were conducted. (170k pdf file).
Partial Aileron Control Blockage A partial aileron control loss in a Beech Bonanza caused by a loose cable in the avionics bay occurred. Images show exactly how this can and did occur because of the unique yoke system in Bonanzas. Recommend that you periodically look closely at your avionics cabling and print this article to show to your avionics and maintenance shops.
Gear & Flaps: Part 1 Discusses the effects of extending the gear and/or flaps on power required, velocity for minimum power required (velocity for maximum endurance) and the velocity for maximum lift to drag ratio (best glide velocity) with specific application to a model E33A Bonanza. However, the concepts are applicable to any aircraft. (99k pdf file).
Gear & Flaps: Part 2 Discusses the effects of extending the gear and/or flaps on the velocity for maximum rate-of-climb and on the actual rate-of-climb with specific application to a model E33A Bonanza. However, the concepts are applicable to any aircraft. (94k pdf file).
Gear & Flaps: Flight Tests Discusses flight tests investigating the effects of extending the gear and/or partial flaps on the parasite drag of the aircraft. Presents original data and provides new insight into estimating the parasite drag from a minimal number of flight tests. The concepts are applicable to both flight test and wind tunnel data including classical NACA 2-dimensional wind tunnel data. The flight tests were conducted in a model E33A Bonanza. However, the concepts are applicable to any aircraft. (336k pdf file).
Altitude Effects: Part 1 Discusses the effects of altitude on power required to maintain steady level flight and on thrust power available. The effects of altitude on the miniumn power required and the velocity for minimum power required are also discussed. Results are given for a model E33A Bonanza. However, the concepts are applicable to any aircraft (84k pdf file).
Altitude Effects: Part 2 Discusses the effects of altitude on the rate of climb in clean and dirty configurations, i.e., with gear and/or flaps extended with specific application to a model E33A Bonanza. However, the concepts are applicable to any aircraft (71k pdf file).
Weight Effects, Part 1 Discusses the effects of weight on aircraft performance including the effect on the velocity for maximum glide range, cruise and maximum velocity and rate-of-climb (77k pdf file).
Weight Effects, Part2 Continues the discussion of the effects of weight on aircraft performance including the effect on the stall velocity (45k pdf file).
Turbulent Penetration Speed What is the turbulent penetration speed? How is it determined? How does it vary with weight? (51k pdf file).
Efficiently Wasting Fuel Discusses how to optimize your fuel usage by flying at the appropriate altitude and per cent power (85k pdf file).
Is There A Step? A look at the old idea of getting `on the step'. (46k pdf file).
Speed Stability Discusses level flight speed stability on both the front and back sides of the power required curve. (49k pdf file).
The Airspeed Indicator Discusses the theory behind the operation of the airspeed indicator (84k pdf file).
Calibrating The Airspeed Indicator Discusses the theory behind why you cannot just fly reciprocal GPS tracks to calibrate the airspeed indicator. (83k pdf file).
Horseshoe Heading Technique: Using GPS to Calibrate the Airspeed Indicator Discusses the theory behind using GPS and the Horseshoe Heading Technique to calibrate the airspeed indicator. This one works. (58k pdf file).
Engine Upgrade Performance IO-520 to IO-550 Discusses the performance increases that you can expect when upgrading to an engine with increased horsepower (99k pdf file).
Engine Upgrade Performance IO-470 to 520 or IO-550 Discusses the performance increases that you can expect when upgrading to an engine with increased horsepower (126k pdf file).
Range for a Piston-propeller Powered Aircraft Discusses range for piston-propeller powered aircraft from both a theoretical and practical viewpoint. (61k pdf file).
Wind Effects on Maximum Range Discusses the effects of wind on maximum range. It shows that adding or subtracting one quarter of the wind velocity gives a better approximation to the velocity for maximum range than the typical rule-of-thumb of adding or subtracting half the wind velocity. (70k pdf file).
Turbo-normalization Performance Discusses the performance increases that you can expect when using turbo-normalization including increased speed at altitude, increased rate-of-climb and decreased time-to-climb (54k pdf file).
Forward CG limit. How is the forward CG limit determined and what are the effects of exceeding it? (34k pdf file).
Trim stall caution. Cautions against applying full up trim if the engine quits during cruise. (33k pdf file).
Turning Performance Discusses the fundamentals of turning performance for aircraft. Derives the equation for turn radius and shows the effect of velocity and bank angle on the radius. (70k pdf file).
Turning Performance - Sustained Level Turns Discusses the effects of turning on the power required to maintain level flight. Determines the available range of true airspeeds for sustained level turns at various bank angles. (78k pdf file).
Turning Performance - Altitude Effects Discusses the effects of altitude on the ability to maintain a level turn. Determines the available range of true airspeeds for sustained level turns at various bank angles upto altitudes of 17,500 feet. (83k pdf file).
Stall Performance with Vortex Generators A flight test report on stall characteristics with and without vortex generators. (101k pdf file).
Cruise Performance with Vortex Generators A flight test report on cruise performance with and without vortex generators. (74k pdf file).
Finding e & f from GPS flight test data. Finding the induced and parasite drag factors, e & f, from GPS flight test data where the true airspeed is directly available. An example is given for a high performance single engine retractable aircraft. (69k pdf file).
Should You Turn Back? Discusses the optimal maneuver for a turnback after engine failure during take-off.
The Possible `Impossible' Turn This paper discusses the optimal maneuver for a turnback after engine failure during take-off. The paper is quite mathematical. However, any pilot can benefit from the discussion of the results and the graphs. (281k pdf file). Based on an AIAA (American Institute of Aeronautics and Astronutics) Journal of Aircraft paper of the same title (Vol. 32, pp. 392-397, 1995).
The Feasibility of Turnback from a Low Altitude Engine Failure During the Takeoff Climb-out Phase by Brent Jett The complete AIAA (American Institute of Aeronautics and Astronutics) paper that discusses a simulator experiment addressing the turnback after engine failure at low altitude (500 feet) during take-off problem (329k pdf file). This experimental work was done as a research project at the United States Naval Academy Aerospace Engineering Department during 1981 while Jett was a Midshipman 1/C. I was the Academic Advisor. Professor Bernard Carson contributed to the theoretical part of the research. (I reset the paper and made one or two minor corrections.) Dave Rogers
Analysis of the Video of an Actual Mooney 20C Turnback? Discusses the video of an actual turnback maneuver executed in a Mooney 20C after engine failure at 450-500 ft AGL during take-off.
David F. Rogers, PhD, ATP Professor of Aerospace Engineering (Emeritus).

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Technical Flying by David F. Rogers

Technical Flying
by
David F. Rogers