AIRCRAFT DESIGN PROJECT-2…

EVALUATION OF CARGO PLANES…

DHANASEKARAN.KELAKKIYA.G

OBJECTIVE:

Design a cargo aircraft by comparing the data and specifications of present aircrafts in this category.

Design Requirements:Cargo of weight - around 600000 kg Design range -4000 km Cruise speed -about 850 km/h.

AIRCRAFT POSSESS;High Wing, Tricycle landing gear,Twin tail arrangement,Turbofan Engine.

DESIGN PROCESS-AN OVERVIEW:

•Conceptual design studies • Preliminary design studies • Detail design studies

The preliminary design has been done of cargo aircraft

preliminary design:

Collection of comparative data Selection of aircraft parameters Preliminary weight estimations Selection of Power plant Airfoil selection, flaps Wing layout Critical performance parameters 3 view diagram

V-n Diagram:

V-n Diagram…..

IMPORTANT VELOCITIES:

The main velocities that r plotted in the V-n

diagram are:

I. Stall Velocity

II. Design Maneuvering Velocity

III. Design Cruise Velocity

IV. Design Dive Velocity

V-n Diagram…..

GUST AND MANEUVERABILITY ENVELOPES

"outside the envelope”

STRUCTURAL ANALYSIS OF WING

“Box Beam (distributed flange) concept-built-up or integral

construction”

Advantages:

Simpler construction & assembly Reduced sealing/jointing problems Reduced overall assembly time/costs

SPAR:

Front spar at 15% of chord, Middle spar at 45% of chord and Rear spar at 70% of chord

SPARS

FUSELAGE:

FUSELAGE STRUCTURAL ANALYSIS

STRINGERS:

DETAILED DESIGN REPORT