Little Joe 1A (LJ-1A) was an uncrewed rocket launched as part of NASA's Mercury program on November 4, 1959.[1] This flight, a repeat of the Little Joe 1 (LJ-1) launch, was to test a launch abort under high aerodynamic load conditions. After lift-off, the pressure sensing system was to indicate when the correct abort dynamic pressure was reached.[2] This should have happened about thirty seconds after launch.[2] A signal was sent to the explosive bolts to separate the spacecraft from the launch vehicle.[2] Up to this point, everything was going as planned.[2] The impulse was also intended to ignite the escape motor.[2] The motor was ignited, but it took a number of seconds to build up thrust, and thus the abort maneuver was not accomplished at the desired dynamic pressure.[3] Because of this, a repeat of the test was planned. Other events from launch through recovery occurred without incident.[3] An altitude of 9 statute miles (14.5 km) and a range of 11.5 statute miles (18.5 km) were obtained, and a speed of 2,021.6 miles per hour (3,254 km/h) was reached. Flight time 8 minutes 11 seconds.[4] Payload 1,007 kg.
^"Little Joe Series". history.nasa.gov. Retrieved April 27, 2023.
^ abcdeGrimwood, James M. "November 4, 1959". Project Mercury - A Chronology. NASA. Retrieved April 30, 2023.
^ abShaylor, David J. (2009). Space Rescue - Ensuring the Safety of Manned Spacecraft. Praxis. p. 121. doi:10.1007/978-0-387-73996-0. ISBN978-0-387-69905-9. Retrieved April 30, 2023.
^"Little Joe 1A". gsfc.nasa.gov. Retrieved April 27, 2023.
April 09, 2024
little, uncrewed, rocket, launched, part, nasa, mercury, program, november, 1959, this, flight, repeat, little, launch, test, launch, abort, under, high, aerodynamic, load, conditions, after, lift, pressure, sensing, system, indicate, when, correct, abort, dyn. Little Joe 1A LJ 1A was an uncrewed rocket launched as part of NASA s Mercury program on November 4 1959 1 This flight a repeat of the Little Joe 1 LJ 1 launch was to test a launch abort under high aerodynamic load conditions After lift off the pressure sensing system was to indicate when the correct abort dynamic pressure was reached 2 This should have happened about thirty seconds after launch 2 A signal was sent to the explosive bolts to separate the spacecraft from the launch vehicle 2 Up to this point everything was going as planned 2 The impulse was also intended to ignite the escape motor 2 The motor was ignited but it took a number of seconds to build up thrust and thus the abort maneuver was not accomplished at the desired dynamic pressure 3 Because of this a repeat of the test was planned Other events from launch through recovery occurred without incident 3 An altitude of 9 statute miles 14 5 km and a range of 11 5 statute miles 18 5 km were obtained and a speed of 2 021 6 miles per hour 3 254 km h was reached Flight time 8 minutes 11 seconds 4 Payload 1 007 kg Little Joe 1AMission typeAbort testOperatorNASAMission duration8 minutes 11 secondsDistance travelled18 5 kilometres 11 5 mi Apogee14 kilometres 9 mi Spacecraft propertiesSpacecraft typeMercury boilerplateManufacturerMcDonnell AircraftLaunch mass1 007 kilograms 2 220 lb Start of missionLaunch dateNovember 4 1959 14 30 1959 11 04UTC14 30Z UTCRocketLittle JoeLaunch siteWallops LA 1End of missionLanding dateNovember 4 1959 14 38 1959 11 04UTC14 39Z UTCProject MercuryAbort Tests Little Joe 6Little Joe 2 See also edit nbsp Wikimedia Commons has media related to Little Joe 1A Little JoeReferences edit nbsp This article incorporates public domain material from websites or documents of the National Aeronautics and Space Administration Little Joe Series history nasa gov Retrieved April 27 2023 a b c d e Grimwood James M November 4 1959 Project Mercury A Chronology NASA Retrieved April 30 2023 a b Shaylor David J 2009 Space Rescue Ensuring the Safety of Manned Spacecraft Praxis p 121 doi 10 1007 978 0 387 73996 0 ISBN 978 0 387 69905 9 Retrieved April 30 2023 Little Joe 1A gsfc nasa gov Retrieved April 27 2023 Retrieved from https en wikipedia org w index php title Little Joe 1A amp oldid 1159847321, wikipedia, wiki, book, books, library,
