Interesting reports from the NASA NTRS collection of technical papers in no particular order.
- Realizing "2001: A Space Odyssey": Piloted Spherical Torus Nuclear Fusion Propulsion
- On the Shoulders of Titans
- ISS Interface Mechanisms and their Heritage
- A space "necklace" about the Earth (trans. from Russian)
- Flight-test results from supersonic deployment of an 18-foot-diameter (s.49-meter) towed ballute decelerator
- Integration of Tools for the Design and Assessment of High-Performance, Highly Reliable Computing Systems (DAHPHRS) Phase 1
- Electron Beam Freeform Fabrication for Cost Effective Near-Net Shape Manufacturing
- Nuclear Pulse Propulsion Orion and Beyond
- DELETED FROM PUBLIC ACCESS (http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19740075942_1974075942.pdf)
- Experimental Study of an Axisymmetric Dual Throat Fluidic Thrust Vectoring Nozzle for Supersonic Aircraft Application
- DELETED FROM PUBLIC ACCESS Utilization of the external tanks of the space transportation system (http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19940004970_1994004970.pdf)
- Apollo Guidance, Navigation, and Control (GNC) Hardware Overview
- Apollo 13 Guidance, Navigation, and Control Challenges
- Advanced Space Fission Propulsion Systems
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19940017339_1994017339.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20080012680_2008012531.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20070004584_2007003787.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19860003843_1986003843.pdf
- Chariots for Apollo (201 MB!)
- DELETED FROM PUBLIC ACCESS (http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660013620_1966013620.pdf)
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19740004402_1974004402.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20100002892_2010002348.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20110008387_2011001681.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20100029591_2010031321.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20110020556_2011018028.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19680009673_1968009673.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20110023292_2011024410.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20100039608_2010042539.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19980218778_1998347975.pdf (Mars DRM 3.0)
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20110005491_2011002390.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19890007335_1989007335.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19890007336_1989007336.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19920015439_1992015439.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20000070728_2000096755.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20010056680_2001086608.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20090015018_2009013953.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19670025581_1967025581.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20110006939_2011000904.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20090015018_2009013953.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20120004036_2012004260.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19950006413_1995106413.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20050175879_2005173639.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19910002328_1991002328.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20060053240_2006255396.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20100017479_2010018646.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20060022083_2006014634.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20070023306_2007019854.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19640012759_1964012759.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19730015111_1973015111.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19860003776_1986003776.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20050172128_2005171687.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19760024058_1976024058.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19800018907_1980018907.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19770075091_1977075091.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19780016307_1978016307.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19910012837_1991012837.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20000057299_2000073127.pdf
- Solar Sail Optimal Orbit Transfers to Synchronous Orbits
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20050137595_2005093394.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20050203994_2005206750.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20090017552_2009015456.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20090040780_2009041488.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19670002028_1967002028.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20100024167_2010023656.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20040121136_2004126380.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20050204038_2005206795.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20040161451_2004168197.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20100010965_2010012055.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20090019561_2009016499.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20110002949_2010032794.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19950009355_1995109355.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20090005995_2009004918.pdf
- DELETED FROM PUBLIC ACCESS Manned Venus Flyby study (http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19790072165_1979072165.pdf)
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20020023715_2002020160.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20080012609_2008011137.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20100011002_2010011954.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20120015764_2012016063.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19930085302_1993085302.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19870007369_1987007369.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20100003846_2010003506.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20040182399_2004178448.pdf
- DELETED FROM PUBLIC ACCESS (http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19680012569_1968012569.pdf)
- DELETED FROM PUBLIC ACCESS (http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19770069903_1977069903.pdf)
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20030014643_2003016789.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20040182399_2004178448.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20060051740_2006253215.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20090004441_2009001219.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20090025984_2009023959.pdf
- Long Duration Hot Hydrogen Exposure of Nuclear Thermal Rocket Materials
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20110005504_2011003160.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20110008816_2011009262.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19930006382_1993006382.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19920001908_1992001908.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20010020383_2001027921.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19930019136_1993019136.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19950012080_1995112080.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19930017766_1993017766.pdf
- http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19920005899_1992005899.pdf