INCLUDING SUPPLEMENTARY PAPERS

THE AERONAUTICAL JOURNAL

NOVEMBER 1971

NOTICES

SIXTY YEARS IN FLYING Igor I. Sikorsky

ASTRONAUTICS AFTER APOLLO A. V. Cleaver

THE RAAF IN THE 1970s Air Marshal Sir Colin Hannah

THE ALAN MARSH AWARD FLYING TRAINING D. A. S. Howell

TECHNICAL NOTES

Effect of Environmental Forces on the Attitude of Gravity Orientated Satellites. V. J. Modi and Part I. High Altitude Orbits R. C. Flanagan

The Evaluation of Local Skin Friction in Compressible Flow S. Sivasegaram

THE LIBRARY

SYMPOSIUM ON THE EFFECT OF NEW MATERIALS ON AIRCRAFT DESIGN—TITANIUM

THE ROYAL AERONAUTICAL SOCIETY

4 HAMILTON PLACE LONDON W1 Qj fflfl THE ROYAL AERONAUTICAL SOCIETY Incorporating The Institution of Aeronautical Engineers and The Helicopter Association of Great Britain

Telephone: 01-499 3515 Telegrams: Didaskalos. London, W1 Published Monthly at 4 HAMILTON PLACE, LONDON W1V OBQ Subscriptions: £15.75 per annum, post free Single Copies, including back numbers: £1.50

VOLUME 75 NUMBER 731 NOVEMBER 1971

CONTENTS Page

NOTICES

Igor I. Sikorsky SIXTY YEARS IN FLYING 761

A. V. Cleaver ASTRONAUTICS AFTER APOLLO 769

Air Marshal Sir THE RAAF IN THE 1970s Colin Hannah 778

D. A. S. Howell THE ALAN MARSH AWARD FLYING TRAINING 782

TECHNICAL NOTES

V. J. Modi and Effect of Environmental Forces on the Attitude of Gravity Orientated Satellites. R. C. Flanagan Part I. High Altitude Orbits 783

S. Sivasegaram The Evaluation of Local Skin Friction in Compressible Flow 793

THE LIBRARY 796

SYMPOSIUM ON THE EFFECT OF NEW MATERIALS ON AIRCRAFT DESIGN- TITANIUM 801

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