Ameer Randolph
The cost of fuel for space missions has always been a topic of curiosity. NASA's Space Shuttle used a mix of liquid propellants, including hydrogen, oxygen, hydrazine, monomethylhydrazine, and nitrogen tetroxide. The total cost of fuel for a space shuttle launch was approximately $1,380,000, with a total weight of 1,607,185 pounds, resulting in a cost of around $0.85 per pound of fuel. The external tank played a crucial role in providing propellant for the shuttle's main engines, while the Solid Rocket Boosters (SRBs) utilized a solid propellant mix of Ammonium Perchlorate Composite Propellant (APCP). SpaceX's Starship, on the other hand, takes off with around 4500 tons of fuel, with 100-150 tons capable of reaching orbit. Calculating the exact fuel cost for space missions involves complex equations that account for mass, efficiency, and external forces.
| Characteristics | Values |
|---|---|
| Total cost for fuel | $1,380,000 |
| Total weight of fuel | 1,607,185 pounds |
| Cost per pound of fuel | $0.85 |
| Fuel used by two solid rocket boosters | 500,000 kg |
| External tank capacity | 629,340 kg of cryogenic liquid oxygen |
| External tank capacity | 106,261 kg of cryogenic liquid hydrogen |
| Truck fuel capacity | 48,000 lbs |
| Truck fuel burn | 2100 lbs |
| Starship takeoff fuel | 4500 tonnes |
| Starship fuel reaching orbit | 100-150 tonnes |
Explore related products
What You'll Learn
The cost of fuel for NASA's Space Transportation System
At liftoff, the orbiter and external tank carry 835,958 gallons of liquid propellants, weighing 1,607,185 pounds, and costing approximately $1,380,000. This brings the cost to around $0.85 per pound of fuel. However, this does not include the fuel burned by the Solid Rocket Boosters (SRBs).
The two SRBs each use roughly 500,000 kg of solid rocket fuel, providing 124 seconds of burn time. The external tank comes in three configurations with progressively reducing weight capacities. The most advanced version, the Super Lightweight Tank (SLWT), can hold 629,340 kg of liquid oxygen and 106,261 kg of liquid hydrogen, providing 480 seconds of burn time.
While the exact cost of the solid rocket fuel is unclear, the total fuel cost for a space shuttle launch, including both liquid and solid propellants, is likely to be significantly higher than the estimated $1,380,000 for liquid propellants alone. The cost of fuel is just one factor in the overall expense of space shuttle missions, which also include vehicle production, maintenance, and other operational costs.
Hydrogen Fuel Cells: Are They Worth the Investment?
You may want to see also
Explore related products
The price of liquid propellants
According to a NASA fact sheet, at liftoff, a space shuttle and its external tank carry 835,958 gallons of various liquid propellants, including hydrogen, oxygen, hydrazine, monomethylhydrazine, and nitrogen tetroxide. The total cost of these propellants is approximately $1,380,000, resulting in a price of about $0.85 per pound of fuel. This calculation assumes a total fuel weight of 1,607,185 pounds.
The external tank plays a critical role in providing propellant to the space shuttle's main engines. The two solid rocket boosters (SRBs) used in each launch consume a significant amount of solid propellant, such as Ammonium Perchlorate Composite Propellant (APCP). This propellant mix provides the necessary thrust and burn time to propel the shuttle into space.
The specific mix of liquid propellants used can vary, but they typically include cryogenic liquid oxygen (LOX) as the oxidizer and cryogenic liquid hydrogen (LH2) as the fuel. In some cases, other propellants like hydrazine and monomethylhydrazine may be used in smaller quantities. The choice of propellants depends on the specific requirements of the mission and the performance needed from the shuttle's engines.
Estimating the cost of liquid propellants is a complex task due to various factors. The mass of the fuel, the efficiency of the engines, and external forces all play a role in determining the amount of propellant needed. Additionally, the cost of producing and transporting the propellants to the launch site can vary, impacting the overall price. While exact figures may be challenging to obtain, it is clear that liquid propellants represent a significant expense in space shuttle missions.
Jet Fuel: Understanding the Cost of 3 Million Gallons
You may want to see also
Explore related products
Solid Rocket Boosters and their fuel
Solid Rocket Boosters (SRBs) are solid propellant motors used to provide thrust in spacecraft launches from initial launch through the first ascent. The Space Shuttle used two Space Shuttle SRBs, which were the largest solid propellant motors ever built until the Space Launch System (SLS) and the first designed for recovery and reuse. The propellant for each solid rocket motor on the Space Shuttle weighed approximately 500,000 kilograms. The SRBs constituted about 69% of the total lift-off mass.
The primary propellants used in SRBs are ammonium perchlorate as the oxidizer, aluminium powder as fuel, and PBAN as a binder and additional fuel. This mixture is commonly referred to as ammonium perchlorate composite propellant (APCP). The specific impulse of this propellant mixture is 242 seconds (2.37 km/s) at sea level and 268 seconds (2.63 km/s) in a vacuum. Upon ignition, the motor burns the fuel at a nominal chamber pressure of 906.8 psi (6.252 MPa).
The Space Shuttle SRBs were 149.16 ft (45.46 m) long and 12.17 ft (3.71 m) in diameter, with each SRB weighing approximately 1,300,000 lb (590 tonnes) at launch. The total propellant load for each solid rocket motor weighed approximately 1,100,000 lb (500 tonnes). The inert weight of each SRB was approximately 200,000 pounds (91 tonnes).
The NASA SLS solid rocket booster is based on three decades of knowledge and experience gained with the space shuttle booster and has been improved with the latest technology. The SLS booster is the largest and most powerful solid propellant booster ever built for flight. Standing 17 stories tall, each booster generates more thrust than 14 four-engine jumbo commercial airliners and burns approximately six tons of propellant every second.
Global Aviation Fuel Consumption: Annual Overview
You may want to see also
Explore related products
External fuel tanks
The Space Shuttle External Tank (ET) is the "gas tank" for the Orbiter and is considered the "backbone" of the Shuttle during launch. It contained the propellants used by the Space Shuttle Main Engines: liquid hydrogen fuel and liquid oxygen oxidizer. The ET also served as structural support for the whole shuttle stack, with attachment points for the orbiter and booster rockets.
The ET was the largest and heaviest element of the Space Shuttle when loaded. It was the only component of the Space Shuttle that was not reused. Approximately 8.5 minutes into the flight, with all of its propellant used, the tank was jettisoned and fell back towards Earth, disintegrating in the atmosphere over the Pacific or Indian Ocean.
The ET was covered with a 1-inch (2.5 cm) thick layer of spray-on foam to protect it from extreme heat during launch. The original ET, also known as the Standard Weight Tank (SWT), was fabricated from 2219 aluminum alloy, a high-strength aluminum-copper alloy used for many aerospace applications. Over the years, NASA worked to reduce the weight of the ET to increase overall efficiency, which resulted in an almost equal increase in the cargo-carrying capability of the Space Shuttle.
Three different types of external tanks were built over the course of the 30-year Space Shuttle Program: standard-weight tanks (SWTs), lightweight tanks (LWTs), and super lightweight tanks (SLWTs). All three types looked the same externally but differed in their internal construction and materials. The ET destined for display at the California Science Center is ET-94, a lightweight tank (LWT) that was ordered to support science missions for the space shuttle Columbia.
Algae's Potential: Sustainable Fuel Source
You may want to see also
Explore related products
The weight of fuel and its cost
The weight of the fuel and its cost are important considerations when planning a space mission. The cost of fuel for a space shuttle mission depends on various factors, including the type of propellant used, the number of engines, and the weight of the payload.
According to a NASA fact sheet, at liftoff, a space shuttle and its external tank carry 835,958 gallons of liquid propellants, including hydrogen, oxygen, hydrazine, monomethylhydrazine, and nitrogen tetroxide. The total weight of these propellants is approximately 1,607,185 pounds, and the cost is approximately $1,380,000, or about $0.85 per pound of fuel.
The space shuttle's external tank provides propellant for the three main engines, known as the Space Shuttle Main Engines (SSME). The two solid rocket boosters (SRBs) used approximately 500,000 kg of solid propellant each, providing 124 seconds of burn time. The external tank's capacity varies depending on its configuration but typically holds around 629,340 kg of liquid oxygen and 106,261 kg of liquid hydrogen as fuel components.
The weight of the fuel is a critical factor in space missions due to the immense amount of fuel required to overcome Earth's gravity and reach orbit. The specific impulse (Isp) of the engines also plays a role in determining fuel consumption, as it measures the efficiency of the engines in converting the chemical energy of the fuel into kinetic energy.
Additionally, the cost of space shuttle fuel is influenced by the complexity and specialization of its production. NASA typically contracts companies to produce these specialized propellants, which contributes to the overall cost of space missions.
Dual Fuel Heat Pump Costs: What's the Price Tag?
You may want to see also
Frequently asked questions
The cost of fuel for a space shuttle mission is approximately $1,380,000. This includes the cost of liquid propellants such as hydrogen, oxygen, hydrazine, monomethylhydrazine, and nitrogen tetroxide.
The cost of fuel for a space shuttle mission varies depending on the specific fuels and propellants used. For example, the solid rocket boosters used in the space shuttle program cost approximately $500,000 each.
A typical space shuttle launch requires approximately 835,958 gallons of liquid propellants, with a total weight of 1,607,185 pounds.
Space shuttle launches typically use a combination of liquid and solid fuels, including liquid oxygen, liquid hydrogen, and solid rocket propellants made from a mixture of ammonium perchlorate, aluminium, iron oxide, and polymers.
A SpaceX Starship takes off with around 4500 tons of fuel, of which around 100-150 tons can reach orbit.
