Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Barry Hellman"'
Comparisons of Measured and Modeled Aero-thermal Distributions for Complex Hypersonic Configurations
Publikováno v:
55th AIAA Aerospace Sciences Meeting.
Publikováno v:
AIAA SPACE 2016.
Publikováno v:
AIAA SPACE 2015 Conference and Exposition.
This paper investigates using a fully reusable launch vehicle to deliver humanitarian supplies to a crisis region. Missions to three different reference locations were analyzed. The intention of this paper is to examine the feasibly of using this typ
Publikováno v:
20th AIAA International Space Planes and Hypersonic Systems and Technologies Conference.
Generation Orbit Launch Services, Inc. (GO) is developing GOLauncher 1, a hypersonic testbed capable of extended duration testing at high dynamic pressure, high Mach number flight conditions. These trajectories are referred to as “suppressed” tra
Autor:
Barry Hellman
Publikováno v:
AIAA SPACE 2014 Conference and Exposition.
This paper presents some approaches towards designing trajectories for hypersonic testing at up to Mach 10 speed using a reusable rocket powered first stage. The motivation behind the paper is the DARPA XS-1 program that is focused on low cost respon
Publikováno v:
AIAA SPACE 2013 Conference and Exposition.
Publikováno v:
AIAA SPACE 2013 Conference and Exposition.
Any vehicle which will be subjected to a wide range of flight conditions must have sufficient control authority to maintain vehicle attitude at all times, favoring designs which exhibit small pitching moments at each relevant flight condition. Design
Publikováno v:
AIAA SPACE 2012 Conference & Exposition.
The assumptions associated with modeling the Return to Launch Site (RTLS) trajectory for a Hybrid Launch Vehicle (HLV) are analyzed and documented in this study. The key assumptions that are identified come from the trajectory optimizer behavior. Spe
Publikováno v:
AIAA SPACE 2012 Conference & Exposition.
Partially reusable launch vehicle systems, featuring a reusable first stage and expendable upper stage(s), have been investigated as options for the next generation Air Force launch vehicle to meet future spacelift needs. An important area of researc
Publikováno v:
AIAA SPACE 2012 Conference & Exposition.
The Air Force previously identified the reusable first stage concept as a promising approach to meet its future space lift needs. The reusable first stage consists of an autonomous, reusable, rocket-powered first stage with an expendable upper stage