X-20 Dynasoar Credit - © Dan Roam

1967 Early. (Cancelled flight). Objectives of the third manned Dynasoar single-orbit flight were to demonstrate maneuver in orbit and during re-entry, and systems evaluation. The pilot would control the transtage engine, maneuvering to change the altitude and inclination of the orbit. During re-entry control maneuvers would be made at pitch angles of from10 to 50 degrees and roll angles of plus to minus twenty degrees with a 1800 m altitude margin.

• - 1967 Early - Dynasoar 5 (cancelled)  Spacecraft: Dynasoar.

  Planned date for third manned Dynasoar single-orbit flight.

• Houchin II, Roy and Smith, Terry, Quest, "X-20 (7 articles)", 1994, Volume 3, Issue 4, page 4.

• Baker, David, The History of Manned Spaceflight, Crown, New York, 1981. The best overview of America's manned space programs up to Skylab. Information and details not available anywhere else. Unfortunately out of print and difficult to locate.

• Godwin, Robert, editor, Dyna-Soar: Hypersonic Strategic Weapons System, Collector's Guide Publishing, Ontario, Canada, 2003.. ISBN: 1896522955. Collection of contemporary documents covering the development and death of Dyna-Soar, as well as a DVD with video of promotional films and systems tests. More at amazon.com...