Last Renegade - Academia.edu (original) (raw)
I graduated from the University if Washington in 1966 with a B.S. in Aeronautics and Astronautics, from the California Institute of Technology with a M.S. in Aeronautics and Astronautics in 1967, and from Stanford University with a PhD in Aeronautics and Astronautics in 1975. I worked at the Boeing Company starting in 1966 and ending in 2000. The first ten years was in the Airplane Company and the last twenty-two years in the Space Division. In 2000 I joined my son's company, Andrews Space and Technology as the chief technical officer. We doubled the size of the company each of the first seven years. I retired again to save jobs during a downturn and worked as an independent consultant for several years.In 2012 I started teaching AA420, the Space Design Class to seniors at the University of Washington. I turned 70 in 2014 and retired for the third time.I do a bit of consulting from time to time, but most of my time is spent reading and writing a definitive book on the US Space Program.
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Papers by Last Renegade
British Interplanetary Society, Journal, 1990
A new concept, the magnetic sail, or "Magsail", is proposed which propels spacecraft by using the... more A new concept, the magnetic sail, or "Magsail", is proposed which propels spacecraft by using the magnetic field generated by a loop of superconducting cable to deflect interplanetary or interstellar plasmas winds. A description is given of the computer code used to model the performance of such a device and results of a series of investigations are presented. It is found that a Magsail sailing on the solar wind at a radius of one astronautical unit (A.U.) can attain accelerations on the order of 0.01 m/s 2 , much greater than that available from a conventional solar lightsail. When used as a brake for an interstellar spacecraft, the Magsail can reduce spacecraft velocity by a factor of e every five years. A systems performance code was used to analyze the utility of the Magsail when used in conjunction with either fusion rocket or laser lightsail accelerated interstellar spacecraft. It is found that the Magsail can reduce flight times by forty to fifty years and propellant requirements by thirty percent for fusion rocket propelled ten lightyear missions. The Magsail also provides an efficient method for decelerating laser lightsail propelled missions that are otherwise simply impossible.
SAE Technical Paper Series
54th International Astronautical Congress of the International Astronautical Federation, the International Academy of Astronautics, and the International Institute of Space Law
Andrews Space has developed the "Alchemist" Air Collection and Enrichment System (ACES), a dualmo... more Andrews Space has developed the "Alchemist" Air Collection and Enrichment System (ACES), a dualmode propulsion system that enables safe, economical launch systems that take off and land horizontally. Alchemist generates liquid oxygen through separation of atmospheric air using the refrigeration capacity of liquid hydrogen. The key benefit of Alchemist is that it minimizes vehicle takeoff weight. All internal and NASA-funded activities have shown that ACES, previously proposed for hypersonic combined cycle RLVs, is a higher payoff, lower-risk technology if LOX generation is performed while the vehicle cruises subsonically.
4th Space manufacturing; Proceedings of the Fifth Conference
ABSTRACT
10th Atmospheric Flight Mechanics Conference
AIP Conference Proceedings, 2004
ACES: An Enabling Technology for Next Generation Space Transportation. [AIP Conference Proceeding... more ACES: An Enabling Technology for Next Generation Space Transportation. [AIP Conference Proceedings 699, 213 (2004)]. Andrew M. Crocker, Adam M. Wuerl, Jason E. Andrews, Dana G. Andrews. Abstract. Andrews Space ...
AIP Conference Proceedings, 2000
Manned exploration beyond Mars requires very high specific energy. The only potential solution un... more Manned exploration beyond Mars requires very high specific energy. The only potential solution under discussion is fusion propulsion. However, fusion has been ten years away for forty years. We have an available solution that combines new technology with an old concept- ...
19th Aerospace Sciences Meeting, 1981
ABSTRACT
Page 1. 39th Joint Propulsion Conference & Exhibit Huntsville, Alabama 2023 July 2003 AIAA 2... more Page 1. 39th Joint Propulsion Conference & Exhibit Huntsville, Alabama 2023 July 2003 AIAA 2003-5037 A COMPARISON OF HORIZONTAL TAKEOFF RLVS FOR NEXT GENERATION SPACE TRANSPORTATION Andrew ...
British Interplanetary Society, Journal, 1990
A new concept, the magnetic sail, or "Magsail", is proposed which propels spacecraft by using the... more A new concept, the magnetic sail, or "Magsail", is proposed which propels spacecraft by using the magnetic field generated by a loop of superconducting cable to deflect interplanetary or interstellar plasmas winds. A description is given of the computer code used to model the performance of such a device and results of a series of investigations are presented. It is found that a Magsail sailing on the solar wind at a radius of one astronautical unit (A.U.) can attain accelerations on the order of 0.01 m/s 2 , much greater than that available from a conventional solar lightsail. When used as a brake for an interstellar spacecraft, the Magsail can reduce spacecraft velocity by a factor of e every five years. A systems performance code was used to analyze the utility of the Magsail when used in conjunction with either fusion rocket or laser lightsail accelerated interstellar spacecraft. It is found that the Magsail can reduce flight times by forty to fifty years and propellant requirements by thirty percent for fusion rocket propelled ten lightyear missions. The Magsail also provides an efficient method for decelerating laser lightsail propelled missions that are otherwise simply impossible.
SAE Technical Paper Series
54th International Astronautical Congress of the International Astronautical Federation, the International Academy of Astronautics, and the International Institute of Space Law
Andrews Space has developed the "Alchemist" Air Collection and Enrichment System (ACES), a dualmo... more Andrews Space has developed the "Alchemist" Air Collection and Enrichment System (ACES), a dualmode propulsion system that enables safe, economical launch systems that take off and land horizontally. Alchemist generates liquid oxygen through separation of atmospheric air using the refrigeration capacity of liquid hydrogen. The key benefit of Alchemist is that it minimizes vehicle takeoff weight. All internal and NASA-funded activities have shown that ACES, previously proposed for hypersonic combined cycle RLVs, is a higher payoff, lower-risk technology if LOX generation is performed while the vehicle cruises subsonically.
4th Space manufacturing; Proceedings of the Fifth Conference
ABSTRACT
10th Atmospheric Flight Mechanics Conference
AIP Conference Proceedings, 2004
ACES: An Enabling Technology for Next Generation Space Transportation. [AIP Conference Proceeding... more ACES: An Enabling Technology for Next Generation Space Transportation. [AIP Conference Proceedings 699, 213 (2004)]. Andrew M. Crocker, Adam M. Wuerl, Jason E. Andrews, Dana G. Andrews. Abstract. Andrews Space ...
AIP Conference Proceedings, 2000
Manned exploration beyond Mars requires very high specific energy. The only potential solution un... more Manned exploration beyond Mars requires very high specific energy. The only potential solution under discussion is fusion propulsion. However, fusion has been ten years away for forty years. We have an available solution that combines new technology with an old concept- ...
19th Aerospace Sciences Meeting, 1981
ABSTRACT
Page 1. 39th Joint Propulsion Conference & Exhibit Huntsville, Alabama 2023 July 2003 AIAA 2... more Page 1. 39th Joint Propulsion Conference & Exhibit Huntsville, Alabama 2023 July 2003 AIAA 2003-5037 A COMPARISON OF HORIZONTAL TAKEOFF RLVS FOR NEXT GENERATION SPACE TRANSPORTATION Andrew ...