The Gloster E.28/39, was the first British jet-engined aircraft and first flew in 1941. It was the fourth jet to fly after the German Heinkel He 178, the Italian Caproni Campini N.1 motorjet, the German Heinkel He 280. The E.28/39 was the product of a specification, issued by the Air Ministry for a suitable aircraft to test the novel jet propulsion designs that Frank Whittle had been developing during the 1930s. Gloster and the company's chief designer, George Carter, worked with Whittle to develop an otherwise conventional aircraft fitted with a Power Jets W.1 turbojet engine. Flying for the first time on 15 May 1941, a pair of E.28/39 aircraft were produced for the flight test programme. Following initial satisfactory reports, these aircraft continued to be flown to test refined engine designs and new aerodynamic features. Despite the loss of the second prototype, due to improper maintenance causing a critical aileron failure, the E.28/39 was considered to be a success. The E.28/39 contributed valuable initial experience with the new type of propulsion and led to the development of the Gloster Meteor, the first operational jet fighter to enter service with the Allies.
The first prototype continued test flying until 1944. The development of the turbojet-powered E.28/39 was the product of a collaboration between the Gloster Aircraft Company and Sir Frank Whittle's firm, Power Jets Ltd. Whittle formed Power Jets Ltd in March 1936 to develop his ideas of jet propulsion, Whittle himself serving as the company's chief engineer. For several years, attracting financial backers and aviation firms prepared to take on Whittle's radical ideas was difficult. Securing funding was a persistently worrying issue throughout the early development of the engine; the first Whittle prototype jet engine, the Power Jets WU, began running trials in early 1937. On 28 April 1939, Whittle made a visit to the premises of the Gloster Aircraft Company, where he met several key figures, such as George Carter, Gloster's chief designer. Carter took a keen interest in Whittle's project when he saw the operational Power Jets W.1 engine. Independently, Whittle had been producing several proposals for a high-altitude jet-powered bomber.
Power Jets and Gloster formed a mutual understanding around mid-1939. In September 1939, the Air Ministry issued a specification to Gloster for an aircraft to test one of Frank Whittle's turbojet designs in flight; the E.28/39 designation originates from the aircraft having been developed in conformance with the 28th "Experimental" specification issued by the Air Ministry in 1939. The E.28/39 specification required the aircraft to carry a pair of 0.303 in Browning machine guns in each wing, along with 2,000 rounds of ammunition, but these were never fitted. The second paragraph of the contract for the first aeroplane stated: "The primary object of this aeroplane will be to flight test the engine installation, but the design shall be based on requirements for a fixed gun interceptor fighter as far as the limitations of size and weight imposed by the power unit permit; the armament equipment called for in this specification will not be required for initial trials but the contractor will be required to make provision in the design for the weight and space occupied by these items..."
Early on, Gloster's chief designer, George Carter, worked with Whittle, laid out a small low-wing aircraft of conventional configuration. The jet intake was located in the nose, while the single tail-fin and elevators were mounted above the jet-pipe, although due to uncertainty about the spinning characteristics of a jet aircraft, at an earlier design stage an alternative arrangement using twin fins and rudders was considered. A pair of jet pipe/rear fuselage arrangements were originally considered due to the potential loss of thrust through the jet pipe itself: a'short jet' with a cutaway rear fuselage and short exhaust, necessitating the tailplane to be carried on booms, a'long jet' with a enclosed jet pipe. On 3 February 1940, a contract for two prototypes was signed by the Air Ministry. Manufacture of the E.28/39 commenced at Brockworth near Gloucester and moved to Regent Motors in Regent Street, considered safer from bombing. Whittle was dissatisfied with the speed at which production took place caused by the Battle of Britain as the area around nearby Coventry was subject to high levels of German bomber activity.
In April 1941, the first of the E.28/39 prototypes was completed but a flight-worthy W.1A engine was not available and a non-flight capable W.1X unit was assembled and installed instead. While only a pair of prototypes had been ordered, the operational philosophy was that, once the prototypes had proved the capabilities of the design, a more substantial programme would begin.
Seidu Salifu is a Ghanaian footballer who last played for Ümraniyespor in Turkey after a short spell at Adana Demirspor Formerly of Club Africain in the Tunisian Ligue Professionnelle 1, he plays as a midfielder. In 2013, coach Sellas Tetteh called him up to be a member of the Ghana Under 20 national team for the 2013 African Youth Championship in Algeria, he was a member of the Ghana Under 20 national team for the 2013 FIFA U-20 World Cup in Turkey. In March 2015, he got. Salifu began his youth career playing for Tamale Young Kotoko in the Ghana Juvenile Association Colts League. Salifu came to prominence in 2010 when he moved to All Stars F. C.. He had a remarkable three-year spell at the club in 2012 and after his success in the games of the 2013 African U-20 Championship qualification, Salifu was sought after by top teams in Ghana including Asante Kotoko SC. After playing a key role for the Black Satellites at the FIFA U-20 Championship 2013 in Turkey he moved to the Tunisian side Club Africain.
In July 2015, Salifu turned down a trial with Bundesliga side Hamburger SV. On 27 August 2016, Seidu Salifu agreed terms to play for Adana Demirspor in Turkey and managed just one league appearance. Salifu joined Ümraniyespor after six months Salifu was part of the Ghana Under-20 national team during the qualification rounds for the 2013 African U-20 Championship. In 2013, coach Sellas Tetteh called him up for the Ghana Under-20 national team for the 2013 tournament in Algeria. During the competition he scored from a long distance in the group match game against Algeria. Salifu was a member of the Ghana Under-20 national team that took part and in the 2013 FIFA U-20 tournament in Turkey, he scored one of Ghana's goal in the 4-3 win over Chile in the quarter finals. In March 2015, Salifu was called up to the Ghana squad to face Senegal national football team and Mali national football team; as of match played 20 May 2017 Club AfricainTunisian Ligue Professionnelle 1: 2014–15 GhanaU-20 World Cup: Third Place 2013 African Youth Championship: Runners up 2013 Seidu Salifu at TFF
Ilunga Makabu is a Congolese professional boxer who has held the WBC cruiserweight title since January 2020, challenged once for the same title in 2016. As of November 2019, he is ranked as the world’s fourth best active cruiserweight by The Ring magazine, fifth by the Transnational Boxing Rankings Board and sixth by BoxRec, his professional career began 20 June 2008 by losing four round bouts fighting with the South African boxer Khayeni Hlungwane. The fight was held at the Carousel Casino in Temba in the province of North-West. September 13, 2008 relates his first victory by technical knockout in the first round of the representative of Zimbabwe Elvis Moyo. 19 November 2011 faced with Brazilian Pedro Otas. Twelve-round fight was organized at Monte Casino in Johannesburg; the predominant Makabu ended the duel by technical knockout in the eleventh round. The duel took place July 2013 in "The Casino" in Monte Carlo in Monaco. In 12 round balanced fight "Junior" he won at the ratio of two points to tie with passing for a Ukrainian favorite, winning the belt WBC Silver junior heavy weight.
It was his fifteenth fight on a professional ring