NDLI: Water landing characteristics of a model of a winged reentry vehicle

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Water landing characteristics of a model of a winged reentry vehicle

Content Provider	NASA Technical Reports Server (NTRS)
Author	Stubbs, S. M.
Copyright Year	1972
Description	Proposed manned space shuttle vehicles are expected to land on airport runways. In an emergency situation, however, the vehicle may be required to land on water. A 1/10-scale dynamic model of a winged reentry vehicle was investigated to determine the water landing characteristics. Two configurations of the proposed vehicle were studied. Configuration 1 had a 30 deg negative dihedral of the stabilizer-elevon surface whereas configuration 2 had a 30 deg positive dihedral. Results indicate that the maximum normal accelerations for configurations 1 and 2 when landing in calm water were approximately 8g and 6g, respectively, and the maximum longitudinal accelerations were approximately 5g and 3g, respectively. A small hydroflap was needed to obtain satisfactory calm-water landings with configuration 2, whereas configuration 1 gave good landings without a hydroflap. All landings made in rough water resulted in unsatisfactory motions. For landings made in three different wave sizes, both configurations dived. The maximum normal accelerations for configurations 1 and 2 when landing in waves were -10.1g and -18.7g, respectively, and the maximum longitudinal accelerations for both configurations were approximately 13g.
File Size	7395242
Page Count	39
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19720021234
Archival Resource Key	ark:/13960/t2g78509j
Language	English
Publisher Date	1972-08-01
Access Restriction	Open
Subject Keyword	Space Vehicles Hydrofoils Space Shuttles Reentry Vehicles Water Landing Hydraulic Test Tunnels Spacecraft Models Horizontal Spacecraft Landing Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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