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Rocket exhaust cratering: lessons learned from viking and apollo... Unfortunately, because three decades have elapsed since NASA last performed a successful retro-rocket landing on a large planetary body - and ironically because Apollo and Viking were successful at minimizing the cratering effects - the space agency has a minimized...

général - core.ac.uk - PDF: hdl.handle.net

Radioisotope electric propulsion for deep space sample return... Chemical retro-rocket braking at Earth is compared to radioisotope electric propulsion but the limited deceleration capability of chemical rockets forces the return trajectories to be ...

PDF: citeseerx.ist.psu.edu

Autonomous navigation results from the mars exploration rover... In the Entry, Descent, and Land-ing (EDL) phase, both landers used a vision system called the Descent Image Motion Esti-mation System (DIMES) to estimate horizontal velocity during the last 2000 meters (m) of descent, by tracking features on the ground with a downlooking camera, in order to control retro-rocket firing to reduce horizontal velocity before impact....

PDF: trs-new.jpl.nasa.gov

retrorocket

industrie mécanique - iate.europa.eu

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Analysis of dynamic data from supersonic retropropulsion experiments in nasa langley's unitary plan wind tunnel... A 5-inch 70-degree sphere-cone forebody model with a 10-inch cylindrical aftbody experimental model was used which is capable of multiple retrorocket configurations....

général - core.ac.uk - PDF: hdl.handle.net

Interview with victor v. veysey... After outbreak of World War II he is assigned to management duties within Caltech's rocket project under leadership of Earnest Watson; involved in retrorocket, High Velocity Aircraft Rocket (HVAR), and barrage rocket programs for the navy....

PDF: oralhistories.library.caltech.edu

Site alteration effects from rocket exhaust impingment during a simulated viking mars landing.A potential interference problem for the Viking '75 scientific investigation of the Martian surface resulting from retrorocket exhaust plume impingement of the surface was investigated experimentally and analytically....

PDF: www.hathitrust.org

Impact of retro rocket plumes on upper stage aerothermodynamics during stage separation... The effect of the plumes of first-stage retrorockets on upper-stage aerodynamics and aerothermal loads is analyzed by means of wind-tunnel testing in the hypersonic wind tunnel H2K of DLR, German Aerospace Center....

PDF: core.ac.uk

Penetraticn distance of retrorocket exhaust plumesA simple method for predicting the penetration distance of highly underexpanded retrorocket exhau,;t plumes into an oncoming free stream is developed and com-pared with experimental data....

PDF: www.dtic.mil