The Experts below are selected from a list of 93 Experts worldwide ranked by ideXlab platform

David A. Ross - One of the best experts on this subject based on the ideXlab platform.

  • Digital Recovery Sequencer- ACES Ejection Seats
    2016
    Co-Authors: David A. Ross, David Culhane, Msgt Steven Ferrell
    Abstract:

    The ACES Ejection Seats currently utilize a Recovery Sequencer based on analog technology to control Ejection event timing and Ejection mode selection. The Recovery Sequencer has limitations with respect to installed life, electronic component obsolescence, flexibility to accommodate seat safety improvements, and mode differentiation at the Mode 1 to 2 crossover point. The Digital Recovery Sequencer (DRS) program was undertaken by Goodrich, the seat OEM, and the CAD/PAD Joint Program Office (JPO) to design and qualify a sequencer based on digital technology that overcomes the limitations of the Recovery Sequencer. The DRS Program was broken down into three phases. Phase I determined the DRS requirements, overall configuration, and potential sources for the DRS components. Phase II will complete the DRS design, firmware verification, component qualification, and system qualification sled tests. Phase III is for pre-planned product improvements (p3I). Phase I of the DRS program was completed in 2003. Phase II was started in November 2003 and is expected to culminate with a fully qualified DRS by June 2005. The schedule for completion of Phase III is currently unspecified. Key results from Phase I and the transition between Phase I and II, Phase II progress-to-date, and an overview of the DRS design are presented herein

  • Digital Recovery Sequencer - Advanced Concept Ejection Seats
    2005
    Co-Authors: David A. Ross, Lee Cotter, David Culhane, Matthew J. Press
    Abstract:

    Abstract : The Advanced Concept Ejection Seat (ACES) currently uses the Analog Sequencer, designed in the 1960's and 1970's with analog technology, to control Ejection event timing and Ejection mode selection. Continued usage of the Analog Sequencer is undesirable due to limitations with respect to its installed life, electronic component obsolescence, flexibility to accommodate seat safety improvements, and mode differentiation capability at the Mode 1 to 2 crossover point. The Digital Recovery Sequencer (DRS) program was undertaken by Goodrich, the seat Original Equipment Manufacturer (OEM), and the Cartridge Actuated Device/Propellant Actuated Device (CAD/PAD) Joint Program Office (JPO) to design and qualify a sequencer based on digital technology as a replacement for the Analog Sequencer. The DRS program was established with three phases: Phase I for requirements definition and supplier selection, Phase II for design and qualification, and Phase III for pre-planned production improvements (P3I). Phase I was completed in 2003. Phase II is complete through design, firmware verification, component qualification, and sled testing. Phase II is on track to conclude with approval of the Safe-to-Fly certification in October 2005. The DRS is in the early stages of production with deliveries scheduled for the 4th Quarter of 2005 and the 2nd Quarter of 2006. The program progress to-date, the DRS design including its safety related improvement, and results from the DRS firmware verification, component qualification, and sled tests are presented herein.

  • Digital Recovery Sequencer - ACES Ejection Seats
    2004
    Co-Authors: David A. Ross, Lee Cotter, David Culhane, Steven Ferrell
    Abstract:

    Abstract : The ACES Ejection Seats currently utilize a Recovery Sequencer based on analog technology to control Ejection event timing and Ejection mode selection. The Recovery Sequencer has limitations with respect to installed life, electronic component obsolescence, flexibility to accommodate seat safety improvements, and mode differentiation at the Mode 1 to 2 crossover point. The Digital Recovery Sequencer (DRS) program was undertaken by Goodrich, the seat OEM, and the CAD/PAD Joint Program Office (JPO) to design and qualify a sequencer based on digital technology that overcomes the limitations of the Recovery Sequencer. The DRS Program was broken down into three phases.

J C Clasper - One of the best experts on this subject based on the ideXlab platform.

  • blast injury in the spine dynamic response index is not an appropriate model for predicting injury
    Clinical Orthopaedics and Related Research, 2015
    Co-Authors: Edward Spurrier, Spyros Masouros, Iain Gibb, James A G Singleton, J C Clasper
    Abstract:

    Background Improvised explosive devices are a common feature of recent asymmetric conflicts and there is a persistent landmine threat to military and humanitarian personnel. Assessment of injury risk to the spine in vehicles subjected to explosions was conducted using a standardized model, the Dynamic Response Index (DRI). However, the DRI was intended for evaluating aircraft Ejection Seats and has not been validated in blast conditions.

David Culhane - One of the best experts on this subject based on the ideXlab platform.

  • Digital Recovery Sequencer- ACES Ejection Seats
    2016
    Co-Authors: David A. Ross, David Culhane, Msgt Steven Ferrell
    Abstract:

    The ACES Ejection Seats currently utilize a Recovery Sequencer based on analog technology to control Ejection event timing and Ejection mode selection. The Recovery Sequencer has limitations with respect to installed life, electronic component obsolescence, flexibility to accommodate seat safety improvements, and mode differentiation at the Mode 1 to 2 crossover point. The Digital Recovery Sequencer (DRS) program was undertaken by Goodrich, the seat OEM, and the CAD/PAD Joint Program Office (JPO) to design and qualify a sequencer based on digital technology that overcomes the limitations of the Recovery Sequencer. The DRS Program was broken down into three phases. Phase I determined the DRS requirements, overall configuration, and potential sources for the DRS components. Phase II will complete the DRS design, firmware verification, component qualification, and system qualification sled tests. Phase III is for pre-planned product improvements (p3I). Phase I of the DRS program was completed in 2003. Phase II was started in November 2003 and is expected to culminate with a fully qualified DRS by June 2005. The schedule for completion of Phase III is currently unspecified. Key results from Phase I and the transition between Phase I and II, Phase II progress-to-date, and an overview of the DRS design are presented herein

  • Digital Recovery Sequencer - Advanced Concept Ejection Seats
    2005
    Co-Authors: David A. Ross, Lee Cotter, David Culhane, Matthew J. Press
    Abstract:

    Abstract : The Advanced Concept Ejection Seat (ACES) currently uses the Analog Sequencer, designed in the 1960's and 1970's with analog technology, to control Ejection event timing and Ejection mode selection. Continued usage of the Analog Sequencer is undesirable due to limitations with respect to its installed life, electronic component obsolescence, flexibility to accommodate seat safety improvements, and mode differentiation capability at the Mode 1 to 2 crossover point. The Digital Recovery Sequencer (DRS) program was undertaken by Goodrich, the seat Original Equipment Manufacturer (OEM), and the Cartridge Actuated Device/Propellant Actuated Device (CAD/PAD) Joint Program Office (JPO) to design and qualify a sequencer based on digital technology as a replacement for the Analog Sequencer. The DRS program was established with three phases: Phase I for requirements definition and supplier selection, Phase II for design and qualification, and Phase III for pre-planned production improvements (P3I). Phase I was completed in 2003. Phase II is complete through design, firmware verification, component qualification, and sled testing. Phase II is on track to conclude with approval of the Safe-to-Fly certification in October 2005. The DRS is in the early stages of production with deliveries scheduled for the 4th Quarter of 2005 and the 2nd Quarter of 2006. The program progress to-date, the DRS design including its safety related improvement, and results from the DRS firmware verification, component qualification, and sled tests are presented herein.

  • Digital Recovery Sequencer - ACES Ejection Seats
    2004
    Co-Authors: David A. Ross, Lee Cotter, David Culhane, Steven Ferrell
    Abstract:

    Abstract : The ACES Ejection Seats currently utilize a Recovery Sequencer based on analog technology to control Ejection event timing and Ejection mode selection. The Recovery Sequencer has limitations with respect to installed life, electronic component obsolescence, flexibility to accommodate seat safety improvements, and mode differentiation at the Mode 1 to 2 crossover point. The Digital Recovery Sequencer (DRS) program was undertaken by Goodrich, the seat OEM, and the CAD/PAD Joint Program Office (JPO) to design and qualify a sequencer based on digital technology that overcomes the limitations of the Recovery Sequencer. The DRS Program was broken down into three phases.

Iain Gibb - One of the best experts on this subject based on the ideXlab platform.

  • blast injury in the spine dynamic response index is not an appropriate model for predicting injury
    Clinical Orthopaedics and Related Research, 2015
    Co-Authors: Edward Spurrier, Spyros Masouros, Iain Gibb, James A G Singleton, J C Clasper
    Abstract:

    Background Improvised explosive devices are a common feature of recent asymmetric conflicts and there is a persistent landmine threat to military and humanitarian personnel. Assessment of injury risk to the spine in vehicles subjected to explosions was conducted using a standardized model, the Dynamic Response Index (DRI). However, the DRI was intended for evaluating aircraft Ejection Seats and has not been validated in blast conditions.

  • SYMPOSIUM: RESEARCH ADVANCES AFTER A DECADE OF WAR Blast Injury in the Spine: Dynamic Response Index Is Not an Appropriate Model for Predicting Injury
    2015
    Co-Authors: James Singleton A. G. Mrcs, Spyros Masouros, Iain Gibb
    Abstract:

    The Author(s) 2015. This article is published with open access at Springerlink.com Background Improvised explosive devices are a common feature of recent asymmetric conflicts and there is a per-sistent landmine threat to military and humanitarian personnel. Assessment of injury risk to the spine in vehi-cles subjected to explosions was conducted using a standardized model, the Dynamic Response Index (DRI). However, the DRI was intended for evaluating aircraft Ejection Seats and has not been validated in blast conditions. Questions/purposes We asked whether the injury patterns seen in blast are similar to those in aircraft Ejection and therefore whether a single injury prediction model can be used for both situations

R.k. Mehra - One of the best experts on this subject based on the ideXlab platform.

  • Closed-loop control of Ejection Seats using vectored thrust propulsion systems
    Proceedings of 1995 34th IEEE Conference on Decision and Control, 2026
    Co-Authors: R.k. Mehra
    Abstract:

    Modern fighter aircraft Ejection Seats are highly sophisticated systems designed to provide safe Ejections for pilots under extremely adverse conditions. US Air Force and Navy have been sponsoring programmes for the design of a new generation of Ejection Seats with closed loop microprocessor controls utilizing new sensing and propulsive actuation mechanisms. This paper provide an introduction to the highly challenging guidance and control problems which require the use of control methodologies that can handle nonlinear, fast transient and uncertain hybrid dynamics.