RMIT飞行训练课件－Range&Endurance 航程和续航时间
**** Hidden Message ***** RMIT Instructor Rating Mass Briefs Issue 1 /2004 Page 1<BR>RANGE & ENDURANCE<BR>Aim: To learn the principles of range and endurance of an aircraft in flight. And the<BR>factors that effect these conditions.<BR>Application:<BR>- Long distance flying = maximum Range<BR>- Holding = maximum Endurance<BR>Revision:<BR> Power<BR> Drag<BR>Definitions:<BR> Range<BR>- air distance travelled for a given fuel burn off (distance)<BR> Endurance<BR>- time in flight for a given amount of fuel (time)<BR> Range Speed<BR> Endurance Speed<BR>Brief 30<BR>RMIT Flight Training Range & Endurance<BR>RMIT Instructor Rating Mass Briefs Issue 1 /2004 Page 2<BR>Principles:<BR> Maximum Range<BR>- Power is defined as: force velocity<BR>Preq = Treq TAS<BR>= D TAS<BR>P / TAS ratio = D TAS<BR>TAS<BR>= D<BR>Maximum Range occurs when Total Drag is a minimum!<BR> Maximum Endurance<BR>- Endurance is dependant on minimum fuel flow for given time in air.<BR>- Fuel flow depends upon power setting. So minimum fuel flow occurs at<BR>minimum power for S&L flight.<BR>Maximum Endurance occurs at minimum power!<BR>Brief 30<BR>RMIT Flight Training Range & Endurance<BR>RMIT Instructor Rating Mass Briefs Issue 1 /2004 Page 3<BR>Considerations:<BR> Airspeed<BR>- = decreased R and decreased E<BR>- = decreased R and decreased E<BR> Weight<BR>- = decreased R (L fly faster or AoA D)<BR>- = decreased E (W = Preq FF)<BR>- = increased R and decreased E<BR> Wind<BR>- HW = decreased R and no change to E<BR>- TW = increased R and no change to E<BR> Power<BR>- = decreased R (P TAS constant P/TAS)<BR>- = decreased E (P FF)<BR>- = decreased R and decreased E (can’t maintain S&L P)<BR> Altitude<BR>- = increased R (ALT, D/TAS)<BR>- = decreased E (ALT, P and FF)<BR>- = decreased R and increased E<BR>Airmanship:<BR>- Set power according to cruise tables in POH<BR>- Lean mixture in cruise<BR>- Never exceed MTOW or VNE<BR>RMIT Flight Training Range & Endurance
页:
[1]