Conversations with John H. Glenn Jr. Interview by Frank Sietzen Jr

Senator Glenn is interviewed about his experiences on Friendship 7 and the Shuttle Discovery, expectations of early astronauts, lunar missions, the International Space Station, international dimensions of space activities, public confidence in NASA, attracting young people to the aerospace industry, highlights of his career, and the future of flight.     

Conversations with Patricia Grace Smith. Interview by Frank Sietzen Jr

Ms. Smith, associate administrator for commercial space transportation within the Federal Aviation Administration, answers questions about regulations and licensing related to reusable launch vehicles, space passenger vehicles, and commercial space ventures.     

Conversations with Rep. Ken Calvert. Interview by Frank Sietzen Jr

Rep. Calvert, chair of the House aeronautics and space subcommittee of the Science Committee, answers questions related to priorities for space in the current congressional session: the Vision for Space Exploration, development of the Crew Exploration Vehicle (CEV) and other heavy-lift launch vehicles, entrepreneurial alliances in the space transportation industry, the U.S. aerospace industry, space tourism, entrepreneurs and NASA, U.S. aeronautics research, a service mission to the Hubble Space Telescope, and priority military space programs.     

Conversations with Norman Augustine. Interview by Linda Voss

Topics discussed in the interview include trends and economic issues in the aerospace industry, the role of the aerospace industry in national security, and mergers and new ventures in the aerospace industry.     

Conversations with Frederic d'Allest. Interview by Theo Pirard

The interview with Frederic d'Allest reviews his involvement with the development of the Ariane launch vehicle program.     

Conversations with Sally Ride. Interview by Linda Voss

Sally Ride discusses her career after leaving the astronaut corps, particularly her company, Imaginary Lines, which encourages middle school-aged girls to pursue careers in science and mathematics.     

Conversations: with Carl Pilcher [interview by Johan Benson

An interview with Carl Pilcher, science program director for solar system exploration at NASA, examines NASA's past, present, and planned missions to explore the solar system. Specific questions relate to the status of current and planned missions, science results of the Pathfinder mission to Mars, cooperation with the Japanese space agency, the status of the search for extraterrestrial life in solar system meteoroids and asteroids, mission size for more in-depth exploration, reports of water on the moon, and the exploration of near-Earth objects.     

Conversations. With Norman Thagard [interview by Johan Benson

This article is an interview with U.S. astronaut Norman Thagard. He was on the Russian Mir 18 mission. Launched to the space station from Baikonur on March 14, 1995, he returned to Earth on the Shuttle 115 days later. With the completion of that mission, Thagard holds the U.S. record for the most time spent in space. Topics of discussion during the interview include: the cultural isolation faced by an American astronaut on a Russian space facility; the physiological and psychological effects of long-duration space flight; the problems of loss of bone and the radiation environment; readaptation to gravity on Earth; and, recommendations to the designers of the Alpha station.     

经验与启示——张镇中教授谈麦道公司的沉没以及中美MD-82合作项目

张镇中教授亲历了美国麦道公司由盛到衰的过程，同时作为麦道公司的总代表，发起并参与了在上海总装MD-82飞机的中美合作项目，尽管这个计划的结果并不如人意，但它却是我国大飞机发展历程中一个重要的事件。前不久我们对张镇中教授进行了专访，请他回忆了这段经历，并对我国大飞机发展提出了一些看法和建议。     

审时度势 谨慎而行——访上海波音航空改装维修工程公司CEO詹姆斯·布朗齐

上海波音航空改装维修工程公司（上海波音）是波音公司在中国大陆地区唯一的控股维修企业。就上海波音的未来发展等问题，本刊记者专访了上海波音CEO詹姆斯·布朗齐。     

Comments, with reply, on 'convergence properties of Gram-Schmidt and SMI adaptive algorithms' by K. Gerlach and F.F. Kretschmer, Jr

The commenter summarizes Q-R decomposition techniques for solving the least squares (LS) problem and comments on associated aspects of the work presented by K. Gerlach and F.F. Kretschmer, Jr. (ibid., vol.267, no.1, Jan.90). In response to the commenter's statement that the statistical properties of the LS that determine the convergence performance are well known. Gerlach and Kretschmer assert that this is true only under the assumptions that have been used in the past to analyze the convergence performance of the canceler and for only a limited number of convergence performance measures. Gerlach and Kretschmer also address the commenter's points on overmatching degrees of freedom.<>     

优势出击:全力打造窄体飞机维修龙头企业--访山东太古飞机工程有限公司总经理黄恩舫

在竞争激烈的国内维修市场中,一家维修企业在4年内开拓出自己的发展空间,并连续3年保持盈利,走出了发展自己强势的窄体飞机维修之路。借山东太古飞机工程有限公司(STAECO)二期机库竣工之机,本刊记者走访了STAECO总经理黄恩舫先生,请他介绍了STAECO的发展特色。     

因地制宜调整发展——走访四川航空公司总师郭全芳

作为一家地方航空公司,四川航空公司在国内率先引入A320、EMB-145飞机,也是国产飞机“新舟” 60的国内首家用户。本刊记者就川航运营这些飞机的情况以及他们对未来的设想采访了郭全芳总师,根据采访内容整理成文。     

中国公务机市场仍在期待变化：与豪客比奇公司谈中国公务机市场的变化

无论从国民经济实力、还是从经济发展的需求，中国都应该能够成为世界公务机市场非常重要的一极，然而事实远非如此。在过去两年中，中国公务机市场虽有转暧的迹象，但距繁荣仍有相当距离。     

“我们看好中国市场，很愿意与中国合作”——访巴西航空工业公司总裁兼首席执行官博泰罗

6月初,本刊记者在上海国际航空运输峰会会议期间专访了巴西航空工业公司总裁兼首席执行官博泰罗先生。博泰罗先生就巴西航空工业公司的发展策略、与中国航空业的合作、世界支线飞机发展现状和趋势等话题回答了记者的提问。本文根据采访录音整理而成     

“我们相信ARJ21是一个很好的项目”——访罗克韦尔·柯林斯公司商务和支线系统部副总裁兼总经理丹尼·海格森

记者：请您介绍一下罗克韦尔·柯林斯公司在ARJ21-700项目中的参与情况。 丹尼·海格森：作为ARJ21-700项目的19家供应商之一，我们负责为ARJ21-700飞机提供一整套的航电设备，其中涵盖了通信、导航、飞控以及监视各个子系统。     

携手合作更好地服务中国市场访巴西航空工业公司总裁兼首席执行官莫里希奥·博泰罗

巴西航空工业公司总裁兼首席执行官莫里希奥·博泰罗2002年12月2日再次来到中国,出席在京举行的中巴涡扇支线飞机合资项目签字仪式.记者注意到,博泰罗总裁当天一直笑容满面.12月3日,在接受本刊记者采访时,博泰罗总裁的喜悦之情依然溢于言表.