The Payload Mass Fraction represents the portion of the total initial mass of the rocket that is dedicated to the payload Payload Mass Fraction is the ratio of the mass of the payload to the total initial mass of the rocket. Payload MassPayload Mass is the mass of the payload carried by the rocket. Total Initial MassTotal Initial Mass is the sum of […]
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Thermal stress is the stress resulting from a change in temperature in a material with a finite coefficient of thermal expansion σthermal​ is the thermal stress. α is the coefficient of thermal expansion of the material. ΔT is the temperature change. E is the Young’s modulus of the material.
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Angular momentum (L) of a satellite is the product of its mass (m), orbital velocity (v), orbital radius (r), and the sine of the angle (θ) between the velocity vector and the radius vector m is the mass of the satellite. v is the orbital velocity of the satellite. r is the orbital radius (distance
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The orbital eccentricity (e) is a parameter that defines the shape of an elliptical orbit ra​ is the distance from the center of the celestial body to the apogee rp​ is the distance from the center of the celestial body to the perigee
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Satellite Mean Motion represents the average angular velocity of a satellite in its orbit n: Mean motion of the satellite. T: Orbital period of the satellite.
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Solar Radiation Pressure Force arises due to the momentum transfer from incident photons of sunlight to the spacecraft’s surface FSRP​ is the force exerted by solar radiation pressure on a satellite. P SR​ is the solar radiation pressure (momentum flux of solar photons). A is the effective area exposed to sunlight. c is the speed
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Satellite Cross-Track Resolution refers to the capability of a satellite imaging system to distinguish between objects or features located side by side in the cross-track direction Cross-Track Resolution is the ability to distinguish between features in the cross-track direction. Ground Pixel SizeGround Pixel Size is the size of a pixel on the ground. AltitudeAltitude is the altitude of the satellite.
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The Doppler Shift represents the change in frequency of a wave in relation to an observer moving relative to the source of the wave. Doppler Shift is the change in frequency. fr​ is the received frequency. ft​ is the transmitted frequency.
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The attitude control torque in satellite technology is used to calculate the torque required. Inertia: represents the resistance of the satellite to changes in its rotational motion Angular Acceleration: it is the rate of change of angular velocity with respect to time
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Solar Irradiance refers to the power per unit area received from the Sun in the form of electromagnetic radiation in the wavelength range of the solar spectrum I is the solar irradiance (W/m²) P is the solar power received (W) A is the area perpendicular to the Sun’s rays (m²).
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