Deployment Analysis of the Lenticular Jointed Antennas Onboard the Mars Express Spacecraft

Mobrem, Mehran; Adams, Douglas S.

doi:10.2514/1.36890

Cited by 84 publications

(42 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Undesirable time-dependent viscoelastic effects have been previously reported in deployable space structures that are stowed for extended durations prior to launch and subsequent deployment [1]. In thermoset composites, these effects increase as the temperature of the structure approaches the glass transition temperature of the resin.…”

Section: Introductionmentioning

confidence: 96%

“…Second, data showed that the deployment dynamics differed significantly from the modeled behavior. The ground testing report noted that a large reduction in the hinge torque was observed, compared to a pristine hinge [1]. The hinge that was tested had undergone multiple thermal cycles and had been stored for 2 yr prior to deployment, as well as being highly stressed in its stowed configuration.…”

Section: Introductionmentioning

confidence: 99%

“…Telemetry flight data from the 2005 deployment of the MARSIS antenna showed two anomalies in its deployment [1]. First, inertial measurements hinted toward the fact that the boom had not completely locked into place.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effects of Long-Term Stowage on the Deployment of Bistable Tape Springs

Brinkmeyer

Pellegrino

Weaver

2015

Journal of Applied Mechanics

View full text Add to dashboard Cite

In the context of strain-energy-deployed space structures, material relaxation effects play a significant role in structures that are stowed for long durations, for example, in a space vehicle prior to launch. Here, the deployment of an ultrathin carbon fiber reinforced plastic (CFRP) tape spring is studied, with the aim of understanding how longduration stowage affects its deployment behavior. Analytical modeling and experiments show that the deployment time increases predictably with stowage time and temperature, and analytical predictions are found to compare well with experiments. For cases where stress relaxation is excessive, the structure is shown to lose its ability to deploy autonomously.

show abstract

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Long-Term Stowage on the Deployment of Bistable Tape Springs

Brinkmeyer

Pellegrino

Weaver

2015

Journal of Applied Mechanics

View full text Add to dashboard Cite

show abstract

“…The goal was to determine the impact of the temperature, the folding rate, the creep recovery and the relaxation during stowage on the behaviour of the tape spring. On the other hand, [18] does not directly concern tape springs, but analyses foldable flattenable tubes which are also characterised by buckling and hysteresis phenomena. The structural damping is in this case based on the Rayleigh model with the particularity that the damping factor is variable according to the state of the structure.…”

Section: Introductionmentioning

confidence: 99%

“…In the majority of the previous works, finite element dynamic simulations of tape springs were performed without any physical representation of the structural damping, with the notable exceptions of [17,18]. In the former, the viscoelastic material properties of a reinforced polymer are integrated in the finite element model under the form of a Prony series.…”

Section: Introductionmentioning

confidence: 99%

Importance of structural damping in the dynamic analysis of compliant deployable structures

2015

View full text Add to dashboard Cite

Compliant mechanisms such as tape springs are often used on satellites to deploy appendices, e.g. solar panels, antennas, telescopes and solar sails. Their main advantage comes from the fact that their motion results from the elastic deformation of structural components and the absence of actuators or external energy sources. The mechanical behaviour of a tape spring is intrinsically complex and nonlinear involving buckling, hysteresis and self-locking phenomena. In the majority of the previous works, dynamic simulations were performed without any physical representation of the structural damping. These simulations could be successfully achieved because of the presence of numerical damping in the transient solver. However, in this case, the dynamic response turns out to be quite sensitive to the amount of numerical dissipation, so that the predictive capabilities of the model are questionable. In this work based on numerical case studies, we show that the dynamic simulation of a tape spring can be made less sensitive to numerical parameters when the structural dissipation is taken into account. I INTRODUCTIONWith the extensive development of small satellites and cubesats dedicated to low-cost missions, the mass reduction of the components is paramount. However, the power reduction due to the miniaturisation of electronic equipment does not follow the same downward slope. Thus, covering only the external surface of the satellite with solar cells might not provide enough power and be too restrictive, hence the necessity for a reliable but cheap and simple means to deploy large solar panels. This, however, brings another major problem that must be solved: the packaging of large structures into the confined space inside the fairing of launch vehicles. In order to address these challenges, deployable structures have been developed and a brief listing of the most common structures can be found in [1]. This paper will focus on those belonging to the compliant mechanisms category and in particular on tape springs.A tape spring is a thin strip curved along its width commonly known as a Carpenter tape and used in the everyday life as tape measures. Nowadays, it finds applications in the space domain for the deployment of appendices such as solar panels, antennas, telescopes and solar sails. Since they belong to the category of compliant mechanisms, they rely only on elastic energy that is stored during the folding and then naturally released when deployed. Indeed, a possible equilibrium state when the tape spring is free of constraints is the straight configuration, which is sought as a deployed configuration for many space applications. This characteristic also brings forward the fact that no source of external energy is required for the deployment and hence the passive and selfactuated behaviours of these devices.Their motion results from the deformation of structural components only and not from the sliding between contact surfaces as in usual hinges or prismatic joints. It implies that tape springs do not requ...

show abstract