Digital Commons Network^™

From: Bill (Mead? - No Last Name), Bill Unknown

John Allen Chalk: Personal Correspondence

No abstract provided.

From: Bill Mead, Bill Mead

John Allen Chalk: Personal Correspondence

No abstract provided.

From: Cliett Goodpasture, Cliett Goodpasture

John Allen Chalk: Personal Correspondence

No abstract provided.

From: Coleman A. Harwell, Coleman A. Harwell

John Allen Chalk: Personal Correspondence

No abstract provided.

From: Don & Marian (No Last Name), Don Unknown, Marian Unknown

John Allen Chalk: Personal Correspondence

No abstract provided.

From: Donald P. Starks, Donald P. Starks

John Allen Chalk: Personal Correspondence

No abstract provided.

From: Dorian Dodd (Reply To 6/15 Letter), Dorian Dodd

John Allen Chalk: Personal Correspondence

No abstract provided.

From: Eddie Coates, Eddie Coates

John Allen Chalk: Personal Correspondence

No abstract provided.

How Climate Change Is Driving Corporate Social Responsibility And Business Innovation, Faith Taylor

Sustainability Seminar Series

Climate Change continues to create ongoing challenges to companies, our communities and planet. Key stakeholders from employees to Investors request that we are all held accountable. Learn how companies have responded and the innovation that is driving change and hope for a better world. Be humbled, educated and inspired to make a difference.

From: Eluora, Dick, Darlene, & Willodean Johnson, Eluora Johnson, Dick Johnson

John Allen Chalk: Personal Correspondence

No abstract provided.

From: Frances Bumbalough, Frances Bumbalough

John Allen Chalk: Personal Correspondence

No abstract provided.

From: J. Paul Du Bois, J. Paul Du Bois

John Allen Chalk: Personal Correspondence

No abstract provided.

Satellite Conjunction Assessment Risk Analysis For “Dilution Region” Events: Issues And Operational Approaches, Matthew D. Hejduk

Space Traffic Management Conference

An important activity within Space Traffic Management is the detection and prevention of possible on-orbit collisions between space objects. The principal parameter for assessing collision likelihood is the probability of collision, which is widely accepted among conjunction assessment practitioners; but it possesses a known deficiency in that it can produce a false sense of safety when the orbital position uncertainties for the conjuncting objects are high. The probability of collision is said to be “diluted” in such a situation and to understate the possible risk; certain approaches have been recommended by researchers to provide (largely conservative) risk estimates and remediation …

End To End Satellite Servicing And Space Debris Management, Aman Chandra, Himangshu Kalita, Roberto Furfaro, Jekan Thanga

Space Traffic Management Conference

There is growing demand for satellite swarms and constellations for global positioning, remote sensing and relay communication in higher LEO orbits. This will result in many obsolete, damaged and abandoned satellites that will remain on-orbit beyond 25 years. These abandoned satellites and space debris maybe economically valuable orbital real-estate and resources that can be reused, repaired or upgraded for future use. Space traffic management is critical to repair damaged satellites, divert satellites into warehouse orbits and effectively deorbit satellites and space debris that are beyond repair and salvage. Current methods for on-orbit capture, servicing and repair require a large service …

Analogies And Comparisons For Stm Data Bodies, Phillip M. Cunio, Brien Flewelling

Space Traffic Management Conference

Space Traffic Management (STM) has already demonstrated its potential to be extremely data-intensive. The large number of objects on orbit today, if observed constantly throughout their lifetimes, could produce a staggeringly large number of observations that might in turn generate large numbers of orbits. Orbit data with a lengthy time history can be used to produce estimates of maneuver frequency, susceptibility to natural forces such as drag, and (if combined with photometric data) assessments of behavioral patterns of life.

A future of mega-constellations and a growing number of nations and organizations with assets on orbit would make it likely that …

Advanced Inflatable De-Orbit Solutions For Derelict Satellites And Orbital Debris, Aman Chandra, Greg Wilburn, Jekan Thanga

Space Traffic Management Conference

The exponential rise in small-satellites and CubeSats in Low Earth Orbit (LEO) poses important challenges for future space traffic management. At altitudes of 600 km and lower, aerodynamic drag accelerates de-orbiting of satellites. However, placement of satellites at higher altitudes required for constellations pose important challenges. The satellites will require on-board propulsion to lower their orbits to 600 km and let aerodynamic drag take-over. In this work we analyze solutions for de-orbiting satellites at altitudes of up to 3000 km. We consider a modular robotic de-orbit device that has stowed volume of a regular CubeSat. The de-orbit device would be …

From: T.L. Salmons, T.L. Salmons

John Allen Chalk: Personal Correspondence

No abstract provided.

From: U "Auto" Lease - Price Inventory, U "Auto" Lease

John Allen Chalk: Personal Correspondence

No abstract provided.

Sched For Celina Lectureship

John Allen Chalk: Personal Correspondence

No abstract provided.

To: Dorian Dodd, John Allen Chalk

John Allen Chalk: Personal Correspondence

No abstract provided.

Flyer - "Why A Church Directory?"

John Allen Chalk: Personal Correspondence

No abstract provided.

From: Charles Gentry, Charles Gentry

John Allen Chalk: Personal Correspondence

No abstract provided.

From: Enid M. Sudbury, Enid M. Sudbury

John Allen Chalk: Personal Correspondence

No abstract provided.

From: Janie Ellsworth, Janie Ellsworth

John Allen Chalk: Personal Correspondence

No abstract provided.

From: Jesse, Jesse Unknown

John Allen Chalk: Personal Correspondence

No abstract provided.

From: L.E. Cranford - Ael Insurance Co. Flyer Enclosed, L.E. Cranford

John Allen Chalk: Personal Correspondence

No abstract provided.

From: Steve Hellier, Steve Hellier

John Allen Chalk: Personal Correspondence

No abstract provided.

Pamphlet & Poem (Name Illegible)

John Allen Chalk: Personal Correspondence

No abstract provided.

To: Gospel Advocate Co., Attn J. Roy Vaughan, John Allen Chalk

John Allen Chalk: Personal Correspondence

No abstract provided.

Astria Ontology: Open, Standards-Based, Data-Aggregated Representation Of Space Objects, Jennie Wolfgang, Kathleen Krysher, Michael Slovenski, Unmil P. Karadkar, Shiva Iyer, Moriba K. Jah

Space Traffic Management Conference

The necessity for standards-based ontologies for long-term sustainability of space operations and safety of increasing space flights has been well-established [6, 7]. Current ontologies, such as DARPA’s OrbitOutlook [5], are not publicly available, complicating efforts for their broad adoption. Most sensor data is siloed in proprietary databases [2] and provided only to authorized users, further complicating efforts to create a holistic view of resident space objects (RSOs) in order to enhance space situational awareness (SSA).

The ASTRIA project is developing an open data model with the goal of aggregating data about RSOs, parts, space weather, and governing policies in order …