Latest Space News
Wed, 21 Mar 2018 22:31:04 +0000
The Air Force's share of the Defense Department's $12.5 billion national security space budget is $11.4 billion.
Wed, 21 Mar 2018 22:03:48 +0000
A Belgian court reversed approval for Inmarsat’s European Aviation Network in the country after fleet operator Viasat challenged the legality of its authorization.
Wed, 21 Mar 2018 19:55:11 +0000
The European Space Agency is revising its e.Deorbit program to look for synergies between the mission and satellite servicing vehicles.
Wed, 21 Mar 2018 19:32:51 +0000
Congress expects to receive from Hyten in June a “warfighting concept of operations” for space. One of the topics will be how to prepare the military for space operations.
Wed, 21 Mar 2018 16:06:41 +0000
Relativity, the startup company developing small launch vehicles using additive manufacturing technologies, announced March 21 an agreement with NASA’s Stennis Space Center to take over one of its test stands.
Wed, 21 Mar 2018 13:20:38 +0000
President Trump's riff on creating a military space force captured the public’s imagination, spawning memes and jokes about starship ninjas gearing up to fight the nation’s wars in space.
Wed, 21 Mar 2018 11:05:37 +0000
The Japanese government, working with private ventures, announced plans March 20 to establish a nearly billion-dollar fund to support the development of space startups in the country.
Wed, 21 Mar 2018 01:24:13 +0000
An Alaskan spaceport will host the first launch of a rocket developed by a stealthy startup company as soon as next week, spaceport officials confirmed March 20.
Tue, 20 Mar 2018 20:40:50 +0000
A decision on a new launch date for NASA’s James Webb Space Telescope, and announcement of any potential breach of its $8 billion cost cap, could come next week, an agency official said March 20.
Tue, 20 Mar 2018 18:20:11 +0000
A letter signed by more than 60 House members calls on the Senate to advance the stalled nomination of fellow congressman Jim Bridenstine to be NASA administrator.
Tue, 20 Mar 2018 17:29:38 +0000
Citing recent reforms that provide more time to orbit a new satellite constellation, satellite broadband-startup OneWeb asked U.S. telecom regulators to nearly triple the size of its authorized low-Earth-orbit constellation.
Tue, 20 Mar 2018 10:53:36 +0000
Citing progress in producing plutonium-238, NASA will allow scientists proposing missions for an upcoming planetary science competition to use nuclear power sources.
Tue, 20 Mar 2018 04:30:11 +0000
Seeking to return a borrowed satellite as soon as possible, Israeli fleet operator Spacecom is very close to purchasing a new satellite dubbed Amos-8, a company official said March 14.
Mon, 19 Mar 2018 17:49:42 +0000
For the space-based infrared SBIRS satellites 5 and 6, the Air Force says the per-unit cost went down 12 percent — from $1.9 billion to $1.6 billion.
Mon, 19 Mar 2018 10:39:02 +0000
Companies that are developing small launch vehicles or who provide rideshare launch services say they expect new Chinese launch vehicles to drive down launch prices, raising concerns among some of unfair competition.
Sun, 18 Mar 2018 09:26:31 +0000
Pentagon official: “There are new threats that the industrial base needs to support. So what does this mean in terms of production capacity?”
Fri, 16 Mar 2018 20:56:55 +0000
Loral Space and Communications wants to move ahead with a “strategic transaction” involving fleet operator Telesat that may spark a legal fight with Telesat’s other major shareholder, a Canadian pension fund.
Fri, 16 Mar 2018 16:49:52 +0000
To prevent collisions in space, nations with advanced orbital monitoring abilities need to share data with each other. Russia, being skilled in space situational awareness (SSA), should be part of the global effort to protect the space environment, experts said March 15 at the Satellite 2018 conference here.
Fri, 16 Mar 2018 13:48:13 +0000
In its budget proposal for the coming year, the U.S. Air Force is trying to send the same message to foreign adversaries and critics at home: the service definitely is not underestimating threats the United States and its allies face in space.
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    Personal information
    Contact information
    Candidate Profile
     Date Submitted:07-12-2012
     Last Modified:08-12-2012 (09:28)
    Job information
     Current job:Systems Project Lead Engineer
     Employment Term:Permanent
     Job location:US only
     Date available:immediately
     Industry:Civil Agencies/International Organizations, Satellite Operators, , , Launch Systems, Consulting/Engineering Services
     KeywordsGuidance Navigation and Control, GNC, Project Engineering, Project Management, simulation, powered flight, launch



    An engineer seeking to leverage a track record of innovative problem solving, thorough analytical skills, and ability to present complex topics to a variety of audiences, as well as management of people and software resources to enhance the company’s customer satisfaction and bottom line. A big-picture technical integrator and troubleshooter reaching out beyond the individual area of expertise across the technical spectrum to optimize the process or system.



    Data-driven decision making – statistical analysis, LEA and Monte Carlo analysis

    Proven teamwork and Leadership skills – Space Shuttle flight controller, Group Lead

    Integrated Project Management and Earned Value Management training

    Strong oral and written communication skills – NASA Panel support


    ·        Project Management,  ISO / CMMI lifecycle support

    ·        Requirements analysis and generation

    ·        Costing, development, testing, and validation

    ·        MS Windows and Office (Excel, Word, PowerPoint), Star/Open Office

    ·        Programming: C, PYTHON, FORTRAN, UNIX: Shell programming, GUI development



    United Space Alliance LLC, Houston, TX(1995 – 8/2011)                                                                                                                                                    

    • Ascent Abort Region Determinator Lead Engineer (2000 – 8/2011)

    Abort Region Determinator (defined) – High speed real-time spacecraft performance program utilizing a combination of mass properties, target information, guidance algorithms, propulsion models, and sequencing to produce cyclical performance solutions.

    Achieved on time error-free delivery of flight data products (databases, calibrations, and displays) as well as technical support to the customer (NASA) of this TIG (7 engineer technical integration group) was achieved via

    • Performing Subject Matter Expert tasks
      • Project Management
      • Systems engineering
      • Developing/presenting analysis for NASA technical panels
    • Managing workloads, task assignments, and schedules.
    • Process control (error analysis, procedures, certification, compliance, ISO 9001)
    • Quality assurance
    • Mentoring new engineers


    • USA Powered Flight and Ascent Trajectory Principle Function Manager for the Cockpit Avionics Upgrade Project (1999 – 2005)
      • Brought an operational GN&C (Guidance Navigation & Control) perspective to a team of Boeing, United Space Alliance, and NASA EG representatives.
      • Evaluated, developed, and validated flight critical software requirements.
        • Presented results to the Ascent GN&C Panel for approval
        • Prepared Shuttle Abort Flight Management Powered Flight Operational Validation Test Report
    • Abort Support Flight Control Lead Engineer (1991 – 8/2011)
      • Supported 35 shuttle missions
      • Time-critical Space Shuttle powered flight abort decision making (team problem recognition, resolution, and execution)
      • Mission critical data generation and Quality Assurance day of launch
      • Process control (procedures, certification, compliance, ISO 9001)
      • Software costing, development, testing, and validation
    • Ascent Abort Region Determinator Production Engineer (1995 – 2000)
      • Produced Flight critical data
      • Streamlined production process with checklist development and automation

    Rockwell Space Operations Company (1986 -1995)

    • Ascent Abort Region Determinator Production Engineer (1986 – 1995)



    ·        Flight Design STS-122 ECO sensor problem response– During tanking tests for STS 122 LH2 (liquid hydrogen) sensors had unexplained multiple intermittent failures. If the LH2 supply was exhausted during flight concurrent with multiple sensor failures, there would be a total vehicle loss (7 lives, $2 Billion). The impact of having no solution was ~ $200 million/month. An operational option was developed to minimize the statistical possibility of LH2 cut-off (maximize residual LH2 mass) while minimizing the shuttle payload capacity (mass) reduction ($10K/lb.). This option was six times more effective than other proposed non-hardware options. The presentation of my option resulted in increased community knowledge concerning the integrated impact of the propellant load, shuttle main engine system, and operations on shuttle performance. In the end, hardware engineers found the cause and solution to the sensor failures.

    ·        Rendezvous Launch Window definition– The open and close of the launch window of a space vehicle are dramatically impacted by having a space object as a target (Hubble telescope, MIR space station and International Space Station). As development of discipline software to correctly adapt to the rendezvous effects moved forward, it was discovered the launch window ground software was not prepared for the first rendezvous flight. An incorrect launch window calculation could result in a loss of mission capability (~$500 million) or dropping the external tank on a foreign land mass (safety and political impact). The concept and algorithms for combining planar (rendezvous) and propellant effects of a launch hold was developed (via Excel). The results were presented to the NASA community and implemented for all shuttle rendezvous flights

    ·        Shuttle Abort Flight Management Powered Flight Operational Validation Test Report- Developed automated validation process utilizing UNIX utilities, scripts, and PYTHON programming to automatically identify software version changes, execute relevant test cases, and generate quality assurance data. Two week process reduced to two days.



    ·        Employee of the Quarter - Technical Achievement (4th quarter 2009) – Ares 1X team (Mass Track validation)

    ·        Space Flight Silver Snoopy Award (astronaut recognition award given to less than 1% of eligible recipients) (2008) – “Mr. Davidson is an asset to the nation’s human space flight program. His efforts to improve safety and mission success …….”

    ·        Ascent/Descent Peer Recognition Award (March 2007)

    ·        Employee of the Month – Teamwork(January 2002)

    ·        Space Flight Awareness Honoree Award (2000) – “John’s consistent hard work going well beyond job requirements to improve quality, reduce costs, greatly improve crew safety, and increase manifest flexibility …….”

    ·        National Rotary Stellar Award Nominee (1997) – Rendezvous launch window definition

    ·        Sustained Superior Performance Award (1994) – He was honored for hisresourcefulness, decisiveness, and excellent technical judgment.”



                Rice University, Houston, TX

                Bachelor of Science in Mechanical Engineering            May 1985

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