Design and economic challenges of 10-22 passenger, - download pdf or read online

By Jan Roskam

Airplane layout three (2000) 33 - forty eight

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12 Instantaneous weight fraction: typical fighter aircraft. 86 ~ I ~ Descend F and Takeoff ~ = o . ~ ~=1 and Takeoff Fig. 13 Instantaneous weight fraction--typical cargo and passenger aircraft. 1 Constraint Boundary Analysis To proceed, it is necessary to have preliminary estimates for CL max, the lift-drag polar, and engine performance data. 6M, At < 50 s, max power Turn2 Acceleration 13-14 Landing Free roll Braking Max Mach number RFP para. C. 8M/40 kft, max power CONSTRAINT ANALYSIS 41 for fighter-type aircraft and engines.

CombatAirPatrol Warm-up andTakeoff Fig. 12 Instantaneous weight fraction: typical fighter aircraft. 86 ~ I ~ Descend F and Takeoff ~ = o . ~ ~=1 and Takeoff Fig. 13 Instantaneous weight fraction--typical cargo and passenger aircraft. 1 Constraint Boundary Analysis To proceed, it is necessary to have preliminary estimates for CL max, the lift-drag polar, and engine performance data. 6M, At < 50 s, max power Turn2 Acceleration 13-14 Landing Free roll Braking Max Mach number RFP para. C. 8M/40 kft, max power CONSTRAINT ANALYSIS 41 for fighter-type aircraft and engines.

5) reduces to TsL fl dV ago dt WTO m TSL> > (D + R) VTO = k T o V s T A L L. fl dV ago d s / V which can be rearranged to yield ds fl ( W r o ~ v ago \ T-s-sS/ d V and integrated from s = 0 and V = 0 to takeoff, where s = so and V = Vro, with the result that S G ---- (WTo _ _ a / 2g0 provided that representative takeoff values of a and fl are used. 21) with the final result that WTO 0l SGPgoCLmax For this limiting case TSL/WTO is directly proportional to Wro/S and inversely proportional to s~. 6 Case 6: Takeoff Ground Roll ($G) Given: dh/dt = 0 and values of p, D = qCDS, CLmax, VTO = kToVsTALL, and R = qCDRS + #ro(fiWro - qCLS).

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Design and economic challenges of 10-22 passenger, jet-powered regional transports by Jan Roskam


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