VTOL aircraft with a thrust-to-weight ratio smaller than 1An aircraft with this VTOL technology (the Invention) (6,7,8,9,10,18,19,20) can achieve VTOL even its thrust-to-weight ratio is smaller than 1.Chen Li Jing
This form is applicable to aircraft powered by turbofan or turbojet engines; here R is the range, V is the cruise speed, L/D is the lift to drag ratio, and Cj is the thrust specific fuel consumption. The corresponding relation for turboprop aircraft is given in Section 2.7. All the var...
Optimal control theory is used to determine open-loop control laws for thrust, coefficient of lift, and bank angle for minimum time maneuvers for high thrust-to-weight ratio aircraft. In obtaining these control laws, an aircraft mathematical model is used which includes constraints on thrust, coef...
The takeoff run is also inversely proportional to the thrust-to-weight (T/W) ratio and to thelift coefficientC1used for takeoff. Increasing the thurst, however, requires heavier engines, which increase the weight of the aircraft and thus reduce the specific range of the aircraft. In turn, mo...
This engine was developed to power the Dassault Rafale fighter aircraft.[14] It fulfills numerous stringent performance criteria, including a high thrust-to-weight ratio, low fuel consumption across all flight regimes, and a long engine life.[15] Additional considerations were afforded to both the...
High reliability, high power to weight ratio, and constant torque provided by hydraulic system have led to manufacturers develop lightweight system that can deliver high power. For instance, Airbus used the 5,000-psi hydraulic system to reduce the weight of the complete system. The system feature...
* Design - A Separate Discipline * Overview of the Design Process * Sizing from a Conceptual Sketch * Airfoil and Geometry Selection * Thrust-to-Weight Ratio and Wing Loading * Initial Sizing * Configuration Layout and Loft * Special Considerations in Configuration Layout * Crew Station, Passenger...
Preliminary weight estimation 4. Refined weight estimation 5. Fuselage design 6\7\8 Aerodynamic design(a,b,c) 9. Thrust/Weight ratio and wing loading 10. Landing gear and Aircraft systems 11. Power plant 12. Stability and control 13. Loads, materials and structures 14\ 15 Performance(a,b)...
Trade studies (a multi-criteria decision-making process to identify the preferable technical solution among a set of solutions, commonly used in design of aircraft) are then carried out to find the combination of wing loading and thrust-to-weight ratio that returns the minimum fuel burn. The ...
used in the manufacturing of aircraft structure need to serve satisfactorily against extremes of temperature ranging from high altitude, low temperature to ambient temperature at ground level and extreme of forces as well as material should require high strength to weight and stiffness to weight ratio...