INTRODUCTION TO HELICOPTER AERODYNAMICS WORKBOOK phần 8 potx
INTRODUCTION TO HELICOPTER AERODYNAMICS WORKBOOK phần 8 potx
... air into the rotor system to blow the tip vortices away from the rotor and free it from the clutches of vortex ring state. Figure 5-4 HELICOPTER AERODYNAMICS WORKBOOK ... to flying rpm, the primary recovery method is to lift off. An alternate method is to land, secure the engine, and apply the rotor brake. These actions should bring the rotor sy...
Ngày tải lên: 08/08/2014, 13:20
INTRODUCTION TO HELICOPTER AERODYNAMICS WORKBOOK phần 3 ppt
... rotational velocity from blade root to tip by increasing/decreasing blade pitch from root to tip. CHAPTER 2 HELICOPTER AERODYNAMICS WORKBOOK 2-10 ROTOR BLADE AERODYNAMICS center of mass ... center of mass is closer to the center of rotation it will tend to lead (move faster). If the blade's CHAPTER 2 HELICOPTER AERODYNAMICS WORKBOOK 2-12 ROTOR BLADE...
Ngày tải lên: 08/08/2014, 13:20
INTRODUCTION TO HELICOPTER AERODYNAMICS WORKBOOK phần 4 ppsx
... tail rotor, more engine power is now available to drive the main rotor system (figure 3 -8) . Figure 3 -8 HELICOPTER AERODYNAMICS WORKBOOK CHAPTER 3 HELICOPTER ... HELICOPTER AERODYNAMICS WORKBOOK CHAPTER 3 HELICOPTER POWERED FLIGHT ANALYSIS 3-3 POWER REQUIRED Now, we've discussed how rotor blades and r...
Ngày tải lên: 08/08/2014, 13:20
INTRODUCTION TO HELICOPTER AERODYNAMICS WORKBOOK phần 5 pdf
... 3-12 CHAPTER 3 HELICOPTER AERODYNAMICS WORKBOOK 3-16 HELICOPTER POWERED FLIGHT ANALYSIS DISSYMMETRY OF LIFT To begin this discussion, we need to backtrack all the way to rotor system control. ... upward displacement of the rotor blades due to_ __________________ and ______________________is called coning. CHAPTER 3 HELICOPTER AERODYNAMICS WORKBOOK 3- 18...
Ngày tải lên: 08/08/2014, 13:20
INTRODUCTION TO HELICOPTER AERODYNAMICS WORKBOOK phần 6 pptx
... counterproductive to autorotative flight. The region breakdown is shown in figure 4-6. The pro-autorotative (auto) region represents about 45% of HELICOPTER AERODYNAMICS WORKBOOK CHAPTER 4 AUTOROTATION ... LEFT BLANK CHAPTER 4 HELICOPTER AERODYNAMICS WORKBOOK 4-6 AUTOROTATION stored rotational energy. All that is left is to put in a little forward cyclic to l...
Ngày tải lên: 08/08/2014, 13:20
INTRODUCTION TO HELICOPTER AERODYNAMICS WORKBOOK docx
... AUDIOVISUAL Stock No. Minutes Chapter 1 Atmospheric Density and Helicopter Flight 4B 88/ 5 19:30 Chapter 2 Rotor Blade Aerodynamics - Part 1 4B 88/ 1-1 Rotor Blade Aerodynamics - Part 2 4B 88/ 1-2 ... ix Chapter 5 Helicopter Flight Phenomena - Part 1 4B 88/ 4-1 26:30 Helicopter Flight Phenomena - Part 2 4B 88/ 4-2 14:00 Helicopter Flight Phenomena - Part 3 4B 88/...
Ngày tải lên: 27/06/2014, 14:20
The Cambridge Guide to Australian English Usage phần 8 potx
... maximum effect. The ultimate key to persuasion is in getting the audience or reader to share your value system to agree that something is worthwhile, or to be condemned. This often comes back to using evaluative ... lark, according to Bryant’s research (1 989 ). pejorative and pejoration This un-English-looking word is used by linguists for several purposes: 1 to refer to affixe...
Ngày tải lên: 24/07/2014, 09:21
The Oxford Introduction to Proto-Indo-European Part 8 potx
... ‘whole’ *som-[*sem- ‘once’] ‘(together) with’ *somo-g ˆ n8h 1 -yo-s (WC) [*sem ‘together’ þ *g ˆ enh 1 - ‘beget’] ‘same (kinship) line’ *somo-ph8 a to ¯ r [*sem ‘together’ þ *ph8 a te ¯ ´ r‘father’] ... [steigh- ‘step’] ‘path’ *stl8neh a - (WC) [*stel- ‘put in place’] ‘post, support’ *sto ´ mn8 ‘mouth’ *storos (NW) ‘starling’ *strenk- (WC) ‘string, to pull (tight)’ A PROTO-INDO-EUROPEAN—E...
Ngày tải lên: 05/08/2014, 13:20