Difference between revisions of "Lunar Lander"

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(New page: A lander vehicle has many of the same compontnets as a space vehicle with several important additions: 1) Landing legs and structure. It is necessary to absorb landing shocks, maintain a ...)
 
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A lander vehicle has many of the same compontnets as a space vehicle with several important additions:
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A lander vehicle has many of the same components as a space vehicle with several important additions:
  
1) Landing legs and structure. It is necessary to absorb landing shocks, maintain a stable configuration, and structurally support the vehicle in the desired landing area.  
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1) [[Lander Legs | Landing legs]] and [[Lander structure | structure]]. It is necessary to absorb landing shocks, maintain a stable configuration, and structurally support the vehicle in the desired landing area.  
  
2) Landing "radar". It may not be actual radar, but something needs to measure the distance from the surface and lateral velocity to execute a landing maneuver. additionally, some vehicles may be performing orbital rendezvous and the equipment may be asked to assist in these mission phases.  
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2) [[Lander landing sensor | Landing "radar"]]. It may not be actual radar, but something needs to measure the distance from the surface and lateral velocity to execute a landing maneuver. additionally, some vehicles may be performing orbital rendezvous and the equipment may be asked to assist in these mission phases.  
 
Notional concepts include Radar, Lidar, Parallax, Video, UWB, Magnetics and other sensors.  
 
Notional concepts include Radar, Lidar, Parallax, Video, UWB, Magnetics and other sensors.  
  
3) Cargo and deployment. Most landers are built like a truck, it carries somehting and has a way of discharging its payload.  
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3) [[Lander Cargo | Cargo]] and [[Lander Cargo deployment | deployment]]. Most landers are built like a truck, it carries something and has a way of discharging its payload.  
 
Typical devices may include ramps, doors, cranes, tiedowns, latches, hardpoints, and more.
 
Typical devices may include ramps, doors, cranes, tiedowns, latches, hardpoints, and more.
  
4) Advanced Propulsion. a lander probably needs the ability to vary the amount of thrust its engines are producing. Additionally, since a positive thrust to weight (not mass just weight) ratio is generally required, the engines need to be sized larger than on a simple spacecraft.
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4) [[Lander Engines | Advanced Propulsion]]. a lander probably needs the ability to vary the amount of thrust its engines are producing. Additionally, since a positive thrust to weight (not mass just weight) ratio is generally required, the engines need to be sized larger than on a simple spacecraft.
  
5) translational Maneuvering. Landers and rendezvousing spacecraft need the ability to translate in all three axis relative to a target. A simple spacegcraft need to hold an attitude, but a lander needs to be able to stop lateral translations for final approach.  Typical solutions are an able main thrust control system (lean over the engines to translate) amd/or small auxiliary engines, generally similar to RCS engines.
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5) [[Translational Maneuvering]]. Landers and rendezvousing spacecraft need the ability to translate in all three axis relative to a target. A simple spacecraft need to hold an attitude, but a lander needs to be able to stop lateral translations for final approach.  Typical solutions are an able main thrust control system (lean over the engines to translate) amd/or small auxiliary engines, generally similar to RCS engines.

Revision as of 10:30, 30 September 2008

A lander vehicle has many of the same components as a space vehicle with several important additions:

1) Landing legs and structure. It is necessary to absorb landing shocks, maintain a stable configuration, and structurally support the vehicle in the desired landing area.

2) Landing "radar". It may not be actual radar, but something needs to measure the distance from the surface and lateral velocity to execute a landing maneuver. additionally, some vehicles may be performing orbital rendezvous and the equipment may be asked to assist in these mission phases. Notional concepts include Radar, Lidar, Parallax, Video, UWB, Magnetics and other sensors.

3) Cargo and deployment. Most landers are built like a truck, it carries something and has a way of discharging its payload. Typical devices may include ramps, doors, cranes, tiedowns, latches, hardpoints, and more.

4) Advanced Propulsion. a lander probably needs the ability to vary the amount of thrust its engines are producing. Additionally, since a positive thrust to weight (not mass just weight) ratio is generally required, the engines need to be sized larger than on a simple spacecraft.

5) Translational Maneuvering. Landers and rendezvousing spacecraft need the ability to translate in all three axis relative to a target. A simple spacecraft need to hold an attitude, but a lander needs to be able to stop lateral translations for final approach. Typical solutions are an able main thrust control system (lean over the engines to translate) amd/or small auxiliary engines, generally similar to RCS engines.

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