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Episode 75: China -back to the Moon with Chang’ E 4

By Gurbir Dated: June 1, 2018 Leave a Comment

Ye Quan-ZhiOne mission two spacecraft, China is going back to the Moon with Chang’E 4 mission that I think is the most exciting lunar mission since the 1970s. By the end of 2018, the China National Space Administration (CNSA) will launch Chang’E 4 that will explore the far side of the Moon with a lander and a rover. Since it is on the other side of the Moon, it will be totally out of sight from the Earth. To facilitate communication, a relay satellite will be launched in advance of the lander/rover’s arrival at the Moon.

In addition to engaging private sector companies in China, Chang’E 4 will include a significant level of international collaboration in this mission with payloads from Germany, the Netherlands, Saudi Arabia and Sweden.

Ye Quan-Zhi is a postdoc astronomer who specialises in small bodies in the solar system. Like me, he started off as an amateur astronomer but now uses telescopes with apertures measured in meters rather than inches!  In addition to his research, he writes about space in the Planetary Society’s blog.   As a Chinese national, Quan-Zhi has an interest and an insight into the Chinese Space Programme and in this episode, we spoke about the upcoming Chang’ E 4 mission and the prospects of collaboration between India and China in space.

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Change’ E 4 Mission – An overview

Relay Satellite
Named as “Queqiao” or magpie bridge will be launched in May 2018 and placed in the Earth/Moon L2 orbit (also known as a halo orbit) about 60,000km from the Moon (450,000 km from the Earth) in the opposite direction of the Earth. From there it will always have a line of sight of the far side of the Moon and Earth at the same time. Its primary purpose is to act as a relay providing all the communications from the Lander/Rover that will land on the Moon in late 2018 or early 2019.

The two microsatellites from the Netherlands are called “Longjiang-1″ and “Longjiang-2”. The will enter an elliptical lunar orbit and conduct low-frequency radio astronomy experiments.

Lander & Rover
Due for launch in December 2018 or early 2019

The lander and rover are the backup lander and rover to the highly successful 2013 Chang’E 3 mission. Whilst identical in most respects, lessons learnt from Chang’E 3 have been incorporated in modifications to Chang’E 4.

Lander
• Landing Camera (LCAM)
• Terrain Camera (TCAM)
• Low-Frequency Spectrometer (LFS) to investigate radiation burst from the sun and cosmos.
• Lunar Lander Neutrons and Dosimetry (LND), a neutron detector from the University of Kiel University in Germany
• A mini “lunar biosphere” experiment designed by 28 Chinese universities consisting of a 0.8 litre capacity enclosure weighing 3 kilograms. The biosphere contains silkworm eggs, and seeds fro cress and potatoes. Once on the lunar surface, this mini biosphere will maintain a humidity and temperature (1 to 30 degrees centigrade) whilst the lunar surface temperature varies from +100 to -100 degrees centigrade. A HD camera will live stream from the lunar surface the hatching eggs and sprouting seeds during the first two weeks of the mission.

Rover
• Panoramic Camera (PCAM)
• Ground penetrating radar (LPR) to investigate the lunar crust and mantle
• Visible and Near-Infrared Imaging Spectrometer (VNIS), for imaging spectroscopy
• Advanced Small Analyser for Neutrals (ASAN), to investigate how solar particles interacts with the lunar surface.

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BIS Northern Meeting York 19th May 2012

By Gurbir Dated: February 18, 2012 2 Comments

A British Interplanetary Society  meeting with a difference. The venue is in the North of England – the historic city of York. You don’t have to be a BIS member – all with an interest in spaceflight are welcome. A day long event with five speakers on subjects that include Lunar dust, Soviet & German spaceflight, origins of the BIS and technical details behind the phenomenal success of the Apollo progam.

A summary below. Full details in the pdf indicated at the bottom of the page.

* * *

Date: Saturday 19th May 2011
Venue: Denham Room : Priory Street Centre, York , Y01 6ET
Cost: £5.00 – Full day event – Seating capacity limited to 50
Tickets – Book online here

Confirmed speakers

Deadly Lunar dust (Dr John Cain  – UK Space Biomedicine Association). The first extraterrestrial material transported by man from an alien world to Earth was the almost 400kg of lunar rocks and dust. It is mysterious, fascinating but dangerous too. What were the hazards to the Apollo astronauts who brought it here and what has been learned by the scientist in the 40 years of laboratory experiments?

Origins of the BIS in the Northwest (Gurbir Singh – https://astrotalkuk.org). The BIS was founded in the northwest of England in 1933. The key players were Philip Cleater in Liverpool and from 1936 until the end of the war, Eric Burgess in Manchester. How did they realise their ambitious vision of establishing an Interplanetary Society a quarter century before a satellite was actually put into orbit?

How Apollo flew to the Moon (David Woods – How Apollo flew to the Moon). The Apollo program that took two dozen men to the Moon between 1968 and 1972 succeeded because of ingenious technological solutions developed rapidly midst the haste of the cold war. The author of the book, “How Apollo flew to the Moon ” explains the details of one of mankind’s most remarkable technological achievements.

China’s Long March to the Cosmos  (Mike Hall – www. aelitauk.com) China was the third country to independently launch humans in to space. That was almost a decade ago. Further success has been swift, including a space walk and a woman in space. Current active programs include lunar orbiter, lunar lander, mission to Mars and a Space station. As we approach the 40th anniversary of the last men on the Moon, why is it that most experts believe that the next one will be Chinese?

German Rocket Development (Martin Dawson – York Astronomical Society). ‘Modern rocketry and spaceflight owe a lot to German rocket development of the 1920’s, ’30’s and ’40’s. Although born as a military weapon, scientists and engineers have turned this sword into a plough share. German rocketry is a story that should not be forgotten, it has highs and it has lows, but is always fascinating.

* * *

Download this pdf for all the details. This document is version 02. I will keep it updated from time to time with a final (version 1.0) by end of April.

 

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Falling to Earth – Book Review

By Gurbir Dated: February 9, 2012 1 Comment

Title: Falling to Earth: An Apollo 15 Astronaut’s Journey to Earth
Publisher: Smithsonian Books
Author: Al Worden & Francis French
ISBN: 13: 978-1588343093 & ISBN 10: 158834309X
Price: $29.95 [304 pages hardcover]

Back in 1966 there used to be an American western TV series called “Branded”. The central character, a West Point graduate and US army captain Jason McCord, is thrown out of the army falsely accused of cowardice. Each episode opens with a humiliating public scene. As his fellow soldiers watch, the captain’s hat is tossed aside, epaulets and buttons ripped off and his sword is ceremonially broken in two before he is cast out of the fort and the doors slammed behind him.

Following the successful return of Apollo 15, Al Worden was accused of unfairly profiting from illicit postal covers (envelopes carried aboard Apollo 15, stamped on day of launch and again on splashdown), in a deal prearranged with a German businessman. Virtually all astronauts had taken personal items on their flights and subsequently sold them for cash later. This was a tradition that NASA had sanctioned since the days of Mercury. But Worden became the fall guy. Abandoned by Deke Slayton (NASA’s Director of Flight Crew Operations), humiliated by Chris Craft (NASA flight director) and dumped by Dave Scott (his Apollo 15 commander), Worden was the only astronaut to be sacked by NASA for this infringement. He was “branded”.

“Falling to Earth“‘ is Al Worden’s autobiography, written with the British but USA based space historian Francis French.   To mark the 40th anniversary of the launch of Apollo 15, Worden has published the story of his mission as Apollo 15’s command module pilot  (CMP) and its immediate aftermath of what came to be known as the “covers incident”,  as the centre piece. With a foreword by Dick Gordon, an epilogue by Tom Stafford and further praise on the cover from Neil Armstrong, Michael Collins, Buzz Aldrin and John Glenn, Worden has finally received the personal redemption from those that he considers matter most – fellow astronauts.

In this three hundred page book Worden describes how Apollo 15 commander Dave Scott arranged a deal with a German businessman for the whole crew. They would fly 100 postal covers to the Moon and back for him to sell privately and discreetly after the space program was over or they left NASA. In return he would set up a trust account of 7000USD in a German Bank for each astronaut to be used for their children’s education.  Within months after the flight it all went wrong. The covers were on the open market with Deke Slayton receiving queries about their authenticity from potential buyers.

Relegated to a desk job following this revelation, Worden describes the humiliating and painful events that followed. He felt ostracised from NASA and in his darker moments was left wondering if life was “still worth living” (p258). He reassesses the idea of honour and discipline he learnt at West Point and the tradition of loyalty within NASA as “bullshit” (p262).   His crewmate Jim Irvin retired and stepped out of the picture, his commander Dave Scott, despite having initiated the business deal, avoided any public castigation. Throughout the book, Worden charts Scott’s culpability in the incident whilst repeatedly emphasising his exemplary command integral to the outstanding success of their challenging mission. Tom Stafford indicates in his book (‘We Have Capture ‘, published in 2004) that this incident cost Scott the command of the USA/USSR joint flight (Apollo Soyuz Test Project) that Stafford went on to command. None of the Apollo 15 crew flew again.

Whilst this is the first detailed account of NASA’s infamous covers incident, there is much more. Worden describes his childhood on a farm in Michigan, homesteaded by his illegal immigrant grandfather Fred from Canada. He describes candidly the harsh reality of his early days at West Point military academy, and throughout the book uses terse and colourful language that he probably picked up there.  He describes with remarkable detail his time with the air force as a test pilot, including an exchange period to Britain, his selection and training as a NASA astronaut and his flight to the Moon. Like all the Apollo missions, Apollo 15’s was a mission impossible. With the heaviest payload and longest duration on the surface of the Moon, it was arguably the most scientifically ambitious lunar mission. It had its share of drama but ended with outstanding success.

This book offers the reader a clearer understanding of the role of the CMP.  As the Apollo 15 CMP, Worden was responsible for the science experiments installed in the specially developed Science Instrument Module (SIM) within the service module. He operated the cameras and instruments during his six days in lunar orbit, for three of which he was alone. During the return journey, whilst still 200,000 miles from Earth, Worden made the deepest of deep space walks to manually recover the film from the cameras in the SIM bay.

Worden insists it was never his intention to become an astronaut until the mid sixties. This ambivalence seems hard to accept from a 21st century perspective. Things were so different then. He describes his genuine fear that his impending divorce might cause him to lose his place on Apollo 15. He smoked then and continues to smoke today saying “if I could have found a safe way to do it, I would have smoked all the way to the Moon and back” (p75).  He too briefly deals with one of the mission’s many unique objectives, the launch from the SIM bay of a sub satellite prior to leaving lunar orbit.

Like any good wine, Worden’s story benefits from the long interval offering a deeper insight into the human element of human spaceflight. Written in a slick punchy style it is entertaining and remarkably informative equally for those who remember the Apollo era and those unfortunate to have been born after it was over.

Two dozen Americans visited the Moon between 1968 and 1972.  As their numbers dwindle and they age the astonishing achievements and sheer magic of that adventure is fading from living memory. Books like this not only introduce a new generation to one of humanity’s greatest adventures, but make a critical contribution to the collective record of that exceptional era by those who made it happen.

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Episode 45: 4th July 2011: Apollo 15 Command Module Pilot Al Worden

By Gurbir Dated: July 4, 2011 Leave a Comment

Probably the most scientifically demanding Apollo mission, Apollo 15 was launched on 26th July 1971 on a two week mission. Al Worden in the command module orbited the Moon for 75 orbits whilst Dave Scott and James Irwin explored the south eastern edge of Mare Imbrium on the Moon’s surface.  Apollo 15 launched with the heaviest payload of all Apollo missions and included the first moon rover, a sub-satellite launched from Apollo 15 in to lunar orbit and a collection of science instruments including a high resolution camera to map the lunar surface.

To coincide with the 40th anniversary, on July 26th 2011, writing with Francis French Al Worden is publishing his autobiography.  In this interview recorded in London on 22nd May, Al talks about his test pilot career before joining NASA, the Apollo 15 mission, the “Covers incident” (these were stamped postal covers franked on the day of launch and again the day of ret urn for subsequent public sale) his post NASA career and his autobiography Falling to Earth.

In addition to bringing back 77kg of Lunar Material, high resolution images of the Moon from lunar orbit and images of the zodiacal light, solar corona and gegenschein, Al Worden conducted a 38 minute space walk a day after they fired the engine for their journey home from Lunar orbit.

________________________

Today’s quote is from Al during this interview. It is a reminder that space exploration is not only about cutting-edge technology and breathtaking adventure but it is above all a human endeavour.

“The story of Apollo 15 is a story of betrayal by people and by the government”

https://media.blubrry.com/astrotalkuk_podcast_feed/astrotalkuk.org/wp-content/uploads/episode45.mp3

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