Appendix 1b: Online Calculators
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Spacecraft Design
Structure
TransHab Module Calculator: Calculates the dimensions of an inflatable TransHab crew module. By Rob Davidoff.
Structural Mass Calculator: Estimates the structural mass of a spacecraft, using the method found here. By Eric Rozier.
Rocket Engine
Thruster Calculator: Simulates spacecraft thrust, given rocket engine type and mission profile. By Eric Rozier.
Delta-V Calculator: Given the rocket's wet mass, dry mass, and specific impulse/exhaust velocity calculate the rocket's delta-V. By Joseph J. Strout.
The Rocket Equation: Calculates the delta-V equation. Given any three of the values it calculates the value of the fourth. By Trent Waddington.
Heat Radiator
Droplet Radiator Calculator: Given a droplet radiator design, calculate required area to dissapate desired waste heat level. By Eric Rozier.
Coolant Calculator: Given a radiator's coolant type and amount, simulate the radiator system. By Eric Rozier.
Misc
Mission Calculator: Given crew size and mission length, calculate the amount of required consumables. By Eric Rozier.
Relativistic Star Ship Calculator: Calculates times to reach distant points by a relativisitic star ship, accelerating continuously. By Stephen R. Schmitt.
SpinCalc: Calculate the parameters of a centrifugal artificial gravity system. By Theodore W. Hall.
Weapons
Nuclear Weapons
Nuclear Weapon Calculator: Models the effect of various weapon sizes on user selected armor samples. By Eric Rozier.
Nuclear Weapon Effects Calculator: For various nuclear weapon yields, calculates the thermal radius, air blast radius, ionizing radiation radius, and other values. By Michael Wong
Nuclear Bomb Effects Computer: For various nuclear weapon yields, calculates blast and fallout values, and displays them on a pseudo-slide rule. By John Walker
Laser Weapons
Laser Weapon Calculator: Models the effect of various types of lasers on user selected armor samples. By Eric Rozier.
Pulse Laser Calculator: Estimates the effects of pulsed laser blasts on a target. By Luke Campbell.
Beam Laser Calculator: Estimates the effects of a beam laser on a target. By Luke Campbell.
Kinetic Weapons
Kinetic Weapon Calculator: Models the effect of various types of projectile weapons on user selected armor samples. By Eric Rozier.
Point Defense
Point Defense Hit Probabilities - Kinetic CIWS: Estimates hit probabilities of kinetic point defence on various hostile missile sizes. By Eric Rozier.
Point Defense Hit Probabilities - Missile CIWS: Estimates hit probabilities of missile based point defence on various hostile missile sizes. By Eric Rozier.
Asteroid Strike
Earth Impact Effects Program: Estimates the effects of an asteroid striking Earth. By Robert Marcus, H. Jay Melosh, and Gareth Collins.
Impact Calculator: Estimates the effects of an asteroid striking Earth. Includes Google Maps so you can plot the size of the crater. By Edward Gomez and Jon Yardley.
Impact Calculator: Estimates the effects of identical asteroids striking Earth and Luna.
Solar System Collisions: Estimates the effects of an asteroids striking the planet of your choice. By Dr. Douglas P. Hamilton



