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Releasing, Approach and Landing Results of the ALFLEX First Landing Trial.

PB99141491

Publication Date	1998
Page Count	38
Abstract	The flight experiment of the ALFLEX (Automatic Landing Flight Experiment) vehicle, a scaled model of HOPE, was conducted to establish unmanned guidance, navigation and control technologies for automatic landing of HOPE. The first landing of the ALFLEX vehicle was made on July 6, 1996 followed by 12 more landings until August 15, 1996. This first landing was achieved after a series of hanging flight trials with a helicopter that confirmed the vehicle functions and calibrated the sensors. Also, prior to these flight tests in Australia, hanging flights had been repeated in Japan as preliminary tests. To provide examples of the experiences and lessons from the unmanned landing tests, this report summarizes the detailed procedures, results and problems with the first landing trial, which has yielded useful results.
Keywords	Flight testing Releasing Approach control Automatic landing control Aerospace planes Reentry vehicles Flight paths Guidance systems Navigation systems Control systems Unmanned Foreign technology ALFLEX(Automated Landing Flight Experiment) Automated Landing Flight Experiment HOPE(H-II Orbiting Plane)
Source Agency	Foreign Technology-Single Entry Miscellaneous Documents
NTIS Subject Category	51B - Aeronautics 84G - Unmanned Spacecraft 84B - Extraterrestrial Exploration
Corporate Authors	National Aerospace Lab., Tokyo (Japan).
Supplemental Notes	Abstract in Japanese.
Document Type	Technical Report
Title Note	Technical rept.
NTIS Issue Number	199914

Releasing, Approach and Landing Results of the ALFLEX First Landing Trial.

Releasing, Approach and Landing Results of the ALFLEX First Landing Trial.
PB99141491

Publication Date	1998
Page Count	38
Abstract	The flight experiment of the ALFLEX (Automatic Landing Flight Experiment) vehicle, a scaled model of HOPE, was conducted to establish unmanned guidance, navigation and control technologies for automatic landing of HOPE. The first landing of the ALFLEX vehicle was made on July 6, 1996 followed by 12 more landings until August 15, 1996. This first landing was achieved after a series of hanging flight trials with a helicopter that confirmed the vehicle functions and calibrated the sensors. Also, prior to these flight tests in Australia, hanging flights had been repeated in Japan as preliminary tests. To provide examples of the experiences and lessons from the unmanned landing tests, this report summarizes the detailed procedures, results and problems with the first landing trial, which has yielded useful results.
Keywords	Flight testing Releasing Approach control Automatic landing control Aerospace planes Reentry vehicles Flight paths Guidance systems Navigation systems Control systems Unmanned Foreign technology ALFLEX(Automated Landing Flight Experiment) Automated Landing Flight Experiment HOPE(H-II Orbiting Plane)
Source Agency	Foreign Technology-Single Entry Miscellaneous Documents
NTIS Subject Category	51B - Aeronautics 84G - Unmanned Spacecraft 84B - Extraterrestrial Exploration
Corporate Authors	National Aerospace Lab., Tokyo (Japan).
Supplemental Notes	Abstract in Japanese.
Document Type	Technical Report
Title Note	Technical rept.
NTIS Issue Number	199914