DNAH.aj.9

(redirected from HL-20)

DNAH.aj.9

A gene on chromosome 17p12 that encodes a heavy chain dynein protein, which attaches to microtubules and hydrolyses ATP to mediate the movement of cilia and flagella; release of ADP produces the force-producing power stroke.
References in periodicals archive ?
He was also the lead NASA project pilot on many programs including the HL-20 Spaceplane (on which the Sierra Nevada Corp.
300 sets of lines with a centrifugal pump head (peapumbaks is available "Jostra" HL-20 Rota Flow Drive Unit 20-973, and RFD "Jostra" HL 30 Rota Flow Drive Unit)
c) 980 sets of the above-mentioned oksE-genaatorite air embolism protection system resources needed, which is used in the machine "Jostra" HL-20 and "Jostra" HL-30;
Poway, CA, has chosen to pursue an approach that is an amalgam of the X-2, X-15, and T-38 vehicles for its Dream Chaser spaceship, rather than the orbital NASA HL-20 vehicle that was the company's first model.
In the early 1990s, NASA commissioned an engineering mock-up of such a vehicle, the HL-20.
As a result of this effort, the HL-20 lifting-body concept is now being considered as an alternative in the Personnel Launch System project being developed to bring astronauts to and from the proposed U.
The 20,000-pound HL-20 is capable of carrying a crew of two and eight passengers.
Session 95-MST-20, Ballroom I, Seth Popinchalk discusses "Working in Teams: Modeling and Control Design within a Single Software Environment," which demonstrates a multi-user collaborative enhancement of a Simulink model of the HL-20 with the goal of designing a new multi-loop, multi-component approach and landing control system.
The free-flight test of the flexible, lifting-body vehicle marked the culmination of years of design and scale model testing completed by SNC and NASA s Langley Research Center on both the SNC Dream Chaser vehicle and the heritage NASA vehicle, the HL-20.
Having the Dream Chaser flight exceed our expectations on its first autonomous flight was an extraordinary accomplishment for SNC, its team of industry, government and university partners, and all those who worked on the NASA heritage HL-20 vehicle that Dream Chaser is based on.
In addition to existing launch vehicles, components such as the orbital version of SpaceDev's proposed six passenger Dream Chaser(TM) vehicle, based on NASA's HL-20 Personnel Launch System, and hybrid rocket motor modules can provide rapid, cost-effective building blocks to construct a variety of missions.
SpaceDev (OTCBB: SPDV) announced today its concept for the SpaceDev Dream Chaser(TM) vehicle, a six-passenger human space transport system based on the ten-passenger HL-20 Personnel Launch System developed by NASA Langley.